./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:18:53,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:18:53,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:18:53,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:18:53,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:18:53,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:18:53,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:18:53,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:18:53,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:18:53,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:18:53,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:18:53,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:18:53,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:18:53,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:18:53,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:18:53,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:18:53,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:18:53,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:18:53,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:18:53,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:18:53,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:18:53,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:18:53,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:18:53,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:18:53,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:18:53,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:18:53,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:18:53,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:18:53,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:18:53,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:18:53,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:18:53,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:18:53,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:18:53,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:18:53,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:18:53,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:18:53,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:18:53,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:18:53,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:18:53,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:18:53,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:18:53,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:18:54,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:18:54,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:18:54,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:18:54,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:18:54,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:18:54,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:18:54,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:18:54,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:18:54,013 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:18:54,014 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:18:54,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:18:54,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:18:54,014 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:18:54,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:18:54,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:18:54,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:18:54,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:18:54,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:18:54,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:18:54,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:18:54,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:18:54,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:18:54,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:18:54,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:18:54,017 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:18:54,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:18:54,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:18:54,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:18:54,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:18:54,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:18:54,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:18:54,018 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_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2022-12-14 11:18:54,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:18:54,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:18:54,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:18:54,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:18:54,231 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:18:54,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2022-12-14 11:18:56,748 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:18:56,981 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:18:56,982 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2022-12-14 11:18:56,994 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/data/18ef3c482/1e5eac1be8c247508f14ce5e489bff0b/FLAG25a4cb3e4 [2022-12-14 11:18:57,346 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/data/18ef3c482/1e5eac1be8c247508f14ce5e489bff0b [2022-12-14 11:18:57,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:18:57,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:18:57,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:18:57,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:18:57,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:18:57,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:57,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14073007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57, skipping insertion in model container [2022-12-14 11:18:57,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:57,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:18:57,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:18:57,751 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,753 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,780 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,785 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,786 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,801 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,803 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,815 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,816 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,818 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,822 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_9a7eb0a5-6627-423b-b936-803d7487d6c7/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2022-12-14 11:18:57,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:18:57,834 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:18:57,894 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,895 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,901 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,903 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,903 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,905 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,910 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,911 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,914 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,915 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,916 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:18:57,919 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_9a7eb0a5-6627-423b-b936-803d7487d6c7/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2022-12-14 11:18:57,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:18:57,942 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:18:57,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57 WrapperNode [2022-12-14 11:18:57,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:18:57,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:18:57,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:18:57,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:18:57,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:57,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,019 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-12-14 11:18:58,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:18:58,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:18:58,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:18:58,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:18:58,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:18:58,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:18:58,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:18:58,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:18:58,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (1/1) ... [2022-12-14 11:18:58,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:18:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:18:58,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:18:58,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:18:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 11:18:58,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 11:18:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-12-14 11:18:58,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-12-14 11:18:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-12-14 11:18:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-12-14 11:18:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 11:18:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 11:18:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 11:18:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 11:18:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 11:18:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 11:18:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 11:18:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 11:18:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-12-14 11:18:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-12-14 11:18:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:18:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:18:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-12-14 11:18:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-12-14 11:18:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:18:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:18:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:18:58,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:18:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:18:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:18:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-12-14 11:18:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-12-14 11:18:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-12-14 11:18:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-12-14 11:18:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 11:18:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 11:18:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:18:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:18:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:18:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:18:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:18:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-12-14 11:18:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-12-14 11:18:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:18:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:18:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 11:18:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:18:58,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-12-14 11:18:58,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:18:58,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 11:18:58,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 11:18:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-12-14 11:18:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-12-14 11:18:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-12-14 11:18:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-12-14 11:18:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-12-14 11:18:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-12-14 11:18:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 11:18:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 11:18:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:18:58,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:18:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:18:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:18:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:18:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:18:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 11:18:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 11:18:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:18:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:18:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 11:18:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 11:18:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-12-14 11:18:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-12-14 11:18:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-12-14 11:18:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-12-14 11:18:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:18:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:18:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:18:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:18:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:18:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:18:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:18:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-12-14 11:18:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-12-14 11:18:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-12-14 11:18:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-12-14 11:18:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 11:18:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 11:18:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:18:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:18:58,331 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:18:58,333 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:18:59,058 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:18:59,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:18:59,515 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:18:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:18:59 BoogieIcfgContainer [2022-12-14 11:18:59,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:18:59,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:18:59,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:18:59,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:18:59,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:18:57" (1/3) ... [2022-12-14 11:18:59,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14598d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:18:59, skipping insertion in model container [2022-12-14 11:18:59,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:18:57" (2/3) ... [2022-12-14 11:18:59,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14598d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:18:59, skipping insertion in model container [2022-12-14 11:18:59,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:18:59" (3/3) ... [2022-12-14 11:18:59,533 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2022-12-14 11:18:59,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:18:59,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:18:59,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:18:59,603 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;@46cf43e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:18:59,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:18:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-12-14 11:18:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 11:18:59,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:18:59,623 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:18:59,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:18:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:18:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 337800469, now seen corresponding path program 1 times [2022-12-14 11:18:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:18:59,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347548877] [2022-12-14 11:18:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:18:59,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:18:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:18:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:18:59,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:18:59,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347548877] [2022-12-14 11:18:59,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347548877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:18:59,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:18:59,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:18:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163151339] [2022-12-14 11:18:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:18:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:18:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:18:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:18:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:18:59,944 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:00,099 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-12-14 11:19:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:19:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-12-14 11:19:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:00,113 INFO L225 Difference]: With dead ends: 602 [2022-12-14 11:19:00,114 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 11:19:00,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:19:00,122 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:00,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 11:19:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-12-14 11:19:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 11:19:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-12-14 11:19:00,191 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-12-14 11:19:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:00,192 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-12-14 11:19:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-12-14 11:19:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 11:19:00,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:00,197 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:00,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:19:00,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:19:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 503850478, now seen corresponding path program 1 times [2022-12-14 11:19:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:00,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127726437] [2022-12-14 11:19:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:00,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:00,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127726437] [2022-12-14 11:19:00,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127726437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:00,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:00,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:19:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457736145] [2022-12-14 11:19:00,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:00,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:00,408 INFO L87 Difference]: Start difference. First operand 377 states and 513 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:00,538 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-12-14 11:19:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:00,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2022-12-14 11:19:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:00,540 INFO L225 Difference]: With dead ends: 598 [2022-12-14 11:19:00,540 INFO L226 Difference]: Without dead ends: 379 [2022-12-14 11:19:00,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:00,542 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:00,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-14 11:19:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-12-14 11:19:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-12-14 11:19:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-12-14 11:19:00,561 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-12-14 11:19:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-12-14 11:19:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-12-14 11:19:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 11:19:00,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:00,563 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:00,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:19:00,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:19:00,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1099776960, now seen corresponding path program 1 times [2022-12-14 11:19:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:00,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832902306] [2022-12-14 11:19:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:00,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:00,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832902306] [2022-12-14 11:19:00,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832902306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:00,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:19:00,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:19:00,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331059070] [2022-12-14 11:19:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:00,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:00,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:00,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:00,654 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:00,811 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-12-14 11:19:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-12-14 11:19:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:00,815 INFO L225 Difference]: With dead ends: 757 [2022-12-14 11:19:00,815 INFO L226 Difference]: Without dead ends: 446 [2022-12-14 11:19:00,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:19:00,818 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 84 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:00,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 934 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-14 11:19:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-12-14 11:19:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2022-12-14 11:19:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-12-14 11:19:00,853 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-12-14 11:19:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:00,854 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-12-14 11:19:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:19:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-12-14 11:19:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 11:19:00,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:00,857 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:00,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:19:00,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:19:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1292310896, now seen corresponding path program 1 times [2022-12-14 11:19:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:00,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412553751] [2022-12-14 11:19:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:01,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412553751] [2022-12-14 11:19:01,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412553751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824836270] [2022-12-14 11:19:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:01,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:01,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:01,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:01,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:19:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:01,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:19:01,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-14 11:19:01,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:19:01,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824836270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:01,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:19:01,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:19:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697181634] [2022-12-14 11:19:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:01,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:19:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:19:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:01,384 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-14 11:19:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:19:01,500 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-12-14 11:19:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:19:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2022-12-14 11:19:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:19:01,504 INFO L225 Difference]: With dead ends: 859 [2022-12-14 11:19:01,504 INFO L226 Difference]: Without dead ends: 439 [2022-12-14 11:19:01,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:19:01,507 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:19:01,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:19:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-12-14 11:19:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-12-14 11:19:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-12-14 11:19:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-12-14 11:19:01,535 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-12-14 11:19:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:19:01,536 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-12-14 11:19:01,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-14 11:19:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-12-14 11:19:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 11:19:01,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:19:01,539 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:19:01,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:19:01,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 11:19:01,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:19:01,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:19:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1656176609, now seen corresponding path program 1 times [2022-12-14 11:19:01,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:19:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194683715] [2022-12-14 11:19:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:01,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:19:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:01,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:19:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194683715] [2022-12-14 11:19:01,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194683715] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:19:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085299820] [2022-12-14 11:19:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:19:01,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:19:01,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:19:01,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:19:01,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:19:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:19:02,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:19:02,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:19:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:02,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:19:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:19:02,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085299820] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:19:02,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [93993634] [2022-12-14 11:19:02,355 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 11:19:02,355 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:19:02,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:19:02,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:19:02,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:19:15,390 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-12-14 11:19:15,708 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:19:47,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [93993634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:19:47,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:19:47,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-12-14 11:19:47,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266555168] [2022-12-14 11:19:47,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:19:47,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 11:19:47,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:19:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 11:19:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-12-14 11:19:47,956 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 11:20:31,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:20:31,243 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-12-14 11:20:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 11:20:31,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2022-12-14 11:20:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:20:31,246 INFO L225 Difference]: With dead ends: 874 [2022-12-14 11:20:31,246 INFO L226 Difference]: Without dead ends: 467 [2022-12-14 11:20:31,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 11:20:31,248 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 110 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:20:31,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2557 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 11:20:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-12-14 11:20:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-12-14 11:20:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-12-14 11:20:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-12-14 11:20:31,315 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-12-14 11:20:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:20:31,315 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-12-14 11:20:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 11:20:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-12-14 11:20:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 11:20:31,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:20:31,317 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:20:31,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:20:31,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:31,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:20:31,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:20:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1285640365, now seen corresponding path program 1 times [2022-12-14 11:20:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:20:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112162918] [2022-12-14 11:20:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:20:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:20:31,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:20:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112162918] [2022-12-14 11:20:31,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112162918] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:20:31,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613213493] [2022-12-14 11:20:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:20:31,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:20:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:20:31,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:20:31,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:20:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:20:31,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:20:31,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:20:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:20:31,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:20:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 11:20:31,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613213493] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:20:31,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881713149] [2022-12-14 11:20:31,966 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-12-14 11:20:31,966 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:20:31,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:20:31,966 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:20:31,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:20:44,070 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-12-14 11:20:44,379 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:21:18,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [881713149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:21:18,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:21:18,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-12-14 11:21:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049063991] [2022-12-14 11:21:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:21:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:21:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:21:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:21:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-12-14 11:21:18,741 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 11:21:49,013 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:01,649 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-12-14 11:22:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 11:22:01,649 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2022-12-14 11:22:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:01,651 INFO L225 Difference]: With dead ends: 867 [2022-12-14 11:22:01,651 INFO L226 Difference]: Without dead ends: 451 [2022-12-14 11:22:01,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:22:01,653 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 34 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:01,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3980 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-12-14 11:22:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-12-14 11:22:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-12-14 11:22:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-12-14 11:22:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-12-14 11:22:01,714 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-12-14 11:22:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:01,714 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-12-14 11:22:01,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-12-14 11:22:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-12-14 11:22:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 11:22:01,716 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:01,716 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:01,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 11:22:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:01,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1298549884, now seen corresponding path program 1 times [2022-12-14 11:22:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:01,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868324824] [2022-12-14 11:22:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-14 11:22:01,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868324824] [2022-12-14 11:22:01,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868324824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:01,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:22:01,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:22:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660296233] [2022-12-14 11:22:01,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:22:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:22:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:22:01,972 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 11:22:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:02,128 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-12-14 11:22:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:22:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-12-14 11:22:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:02,130 INFO L225 Difference]: With dead ends: 847 [2022-12-14 11:22:02,131 INFO L226 Difference]: Without dead ends: 448 [2022-12-14 11:22:02,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:22:02,132 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:02,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:22:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-12-14 11:22:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-12-14 11:22:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-14 11:22:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-12-14 11:22:02,196 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-12-14 11:22:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:02,197 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-12-14 11:22:02,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 11:22:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-12-14 11:22:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-14 11:22:02,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:02,198 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:22:02,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 451651501, now seen corresponding path program 1 times [2022-12-14 11:22:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:02,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201902936] [2022-12-14 11:22:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:22:02,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201902936] [2022-12-14 11:22:02,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201902936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:22:02,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132498728] [2022-12-14 11:22:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:02,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:02,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:02,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:02,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:22:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:02,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:22:02,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:22:02,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:22:02,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132498728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:02,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:22:02,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 11:22:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797660953] [2022-12-14 11:22:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:02,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:22:02,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:22:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:22:02,593 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 11:22:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:22:02,834 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-12-14 11:22:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:22:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2022-12-14 11:22:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:22:02,841 INFO L225 Difference]: With dead ends: 1246 [2022-12-14 11:22:02,841 INFO L226 Difference]: Without dead ends: 843 [2022-12-14 11:22:02,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:22:02,842 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:22:02,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:22:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-12-14 11:22:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-12-14 11:22:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-12-14 11:22:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-12-14 11:22:02,936 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-12-14 11:22:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:22:02,936 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-12-14 11:22:02,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-14 11:22:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-12-14 11:22:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-14 11:22:02,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:22:02,938 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:22:02,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 11:22:03,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:03,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:22:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:22:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash 374860216, now seen corresponding path program 1 times [2022-12-14 11:22:03,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:22:03,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252553679] [2022-12-14 11:22:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:22:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:22:03,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:22:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252553679] [2022-12-14 11:22:03,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252553679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:22:03,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331606115] [2022-12-14 11:22:03,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:22:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:22:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:22:03,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:22:03,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:22:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:22:03,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:22:03,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:22:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:22:03,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:22:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:22:03,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331606115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:22:03,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841132663] [2022-12-14 11:22:03,526 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-12-14 11:22:03,526 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:22:03,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:22:03,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:22:03,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:22:16,032 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-12-14 11:22:16,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:22:55,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1841132663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:22:55,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:22:55,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-12-14 11:22:55,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599561149] [2022-12-14 11:22:55,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:22:55,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 11:22:55,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:22:55,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 11:22:55,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:22:55,983 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 11:23:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:23:36,170 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-12-14 11:23:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 11:23:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2022-12-14 11:23:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:23:36,174 INFO L225 Difference]: With dead ends: 1635 [2022-12-14 11:23:36,174 INFO L226 Difference]: Without dead ends: 840 [2022-12-14 11:23:36,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 76.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 11:23:36,176 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 72 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:23:36,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1804 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 11:23:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-12-14 11:23:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-12-14 11:23:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-12-14 11:23:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-12-14 11:23:36,264 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-12-14 11:23:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:23:36,264 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-12-14 11:23:36,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-12-14 11:23:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-12-14 11:23:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-12-14 11:23:36,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:23:36,266 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:23:36,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 11:23:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:36,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:23:36,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:23:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash 563565964, now seen corresponding path program 1 times [2022-12-14 11:23:36,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:23:36,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871965682] [2022-12-14 11:23:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:36,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:23:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:23:36,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:23:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871965682] [2022-12-14 11:23:36,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871965682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:23:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755376914] [2022-12-14 11:23:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:23:36,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:23:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:23:36,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:23:36,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 11:23:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:23:36,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:23:36,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:23:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:23:36,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:23:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:23:36,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755376914] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:23:36,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [116720678] [2022-12-14 11:23:36,850 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-12-14 11:23:36,850 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:23:36,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:23:36,851 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:23:36,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:25:13,040 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-12-14 11:25:14,236 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-12-14 11:25:15,811 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-12-14 11:25:17,793 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-12-14 11:25:18,104 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-12-14 11:25:18,908 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 455 for LOIs [2022-12-14 11:25:19,207 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-12-14 11:25:19,251 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-12-14 11:25:19,567 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2022-12-14 11:25:19,720 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-12-14 11:25:19,856 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2022-12-14 11:25:30,686 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 281 for LOIs [2022-12-14 11:25:32,046 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-12-14 11:25:33,981 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2022-12-14 11:25:34,056 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-12-14 11:25:34,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:26:39,029 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:26:49,546 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 739 DAG size of output: 531 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:26:57,768 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 745 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:27:03,864 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 749 DAG size of output: 544 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:27:50,405 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 468 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:28:27,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [116720678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:28:27,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:28:27,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [4, 4, 4] total 91 [2022-12-14 11:28:27,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237662096] [2022-12-14 11:28:27,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:28:27,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-12-14 11:28:27,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:28:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-12-14 11:28:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=7872, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 11:28:27,174 INFO L87 Difference]: Start difference. First operand 840 states and 1115 transitions. Second operand has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-12-14 11:28:49,106 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:30:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:30:45,550 INFO L93 Difference]: Finished difference Result 1660 states and 2322 transitions. [2022-12-14 11:30:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-14 11:30:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 133 [2022-12-14 11:30:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:30:45,555 INFO L225 Difference]: With dead ends: 1660 [2022-12-14 11:30:45,555 INFO L226 Difference]: Without dead ends: 1096 [2022-12-14 11:30:45,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 307 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4619 ImplicationChecksByTransitivity, 237.3s TimeCoverageRelationStatistics Valid=500, Invalid=11710, Unknown=0, NotChecked=0, Total=12210 [2022-12-14 11:30:45,559 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 486 mSDsluCounter, 14998 mSDsCounter, 0 mSdLazyCounter, 22212 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 15566 SdHoareTripleChecker+Invalid, 22259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 22212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:30:45,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 15566 Invalid, 22259 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [47 Valid, 22212 Invalid, 0 Unknown, 0 Unchecked, 73.1s Time] [2022-12-14 11:30:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-12-14 11:30:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 940. [2022-12-14 11:30:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 611 states have (on average 1.2945990180032734) internal successors, (791), 631 states have internal predecessors, (791), 231 states have call successors, (231), 102 states have call predecessors, (231), 97 states have return successors, (248), 223 states have call predecessors, (248), 229 states have call successors, (248) [2022-12-14 11:30:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1270 transitions. [2022-12-14 11:30:45,802 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1270 transitions. Word has length 133 [2022-12-14 11:30:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:30:45,802 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1270 transitions. [2022-12-14 11:30:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2022-12-14 11:30:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1270 transitions. [2022-12-14 11:30:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-14 11:30:45,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:30:45,804 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:30:45,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 11:30:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 11:30:46,005 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:30:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:30:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1285238558, now seen corresponding path program 1 times [2022-12-14 11:30:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:30:46,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291848355] [2022-12-14 11:30:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:30:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:30:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:30:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:30:46,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:30:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291848355] [2022-12-14 11:30:46,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291848355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:30:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220938612] [2022-12-14 11:30:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:30:46,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:30:46,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:30:46,127 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:30:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 11:30:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:30:46,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:30:46,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:30:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:30:46,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:30:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:30:46,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220938612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:30:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109535143] [2022-12-14 11:30:46,410 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-12-14 11:30:46,410 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:30:46,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:30:46,411 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:30:46,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:30:58,710 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-12-14 11:30:59,008 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:31:35,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [109535143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:31:35,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:31:35,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-12-14 11:31:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783378340] [2022-12-14 11:31:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:31:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 11:31:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:31:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 11:31:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-12-14 11:31:35,525 INFO L87 Difference]: Start difference. First operand 940 states and 1270 transitions. Second operand has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 11:31:49,942 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:32:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:32:16,641 INFO L93 Difference]: Finished difference Result 1340 states and 1799 transitions. [2022-12-14 11:32:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 11:32:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 135 [2022-12-14 11:32:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:32:16,645 INFO L225 Difference]: With dead ends: 1340 [2022-12-14 11:32:16,645 INFO L226 Difference]: Without dead ends: 940 [2022-12-14 11:32:16,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 11:32:16,646 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 46 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-14 11:32:16,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2854 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-14 11:32:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-12-14 11:32:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2022-12-14 11:32:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 611 states have (on average 1.292962356792144) internal successors, (790), 631 states have internal predecessors, (790), 231 states have call successors, (231), 102 states have call predecessors, (231), 97 states have return successors, (248), 223 states have call predecessors, (248), 229 states have call successors, (248) [2022-12-14 11:32:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1269 transitions. [2022-12-14 11:32:16,893 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1269 transitions. Word has length 135 [2022-12-14 11:32:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:32:16,893 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1269 transitions. [2022-12-14 11:32:16,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-14 11:32:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1269 transitions. [2022-12-14 11:32:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 11:32:16,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:32:16,895 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:32:16,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 11:32:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:32:17,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:32:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:32:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash 326917429, now seen corresponding path program 1 times [2022-12-14 11:32:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:32:17,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529146714] [2022-12-14 11:32:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:32:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:32:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:32:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:32:17,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:32:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529146714] [2022-12-14 11:32:17,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529146714] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:32:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678089303] [2022-12-14 11:32:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:32:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:32:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:32:17,187 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:32:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7eb0a5-6627-423b-b936-803d7487d6c7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 11:32:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:32:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:32:17,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:32:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:32:17,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:32:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-14 11:32:17,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678089303] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:32:17,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [560810536] [2022-12-14 11:32:17,430 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2022-12-14 11:32:17,430 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:32:17,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:32:17,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:32:17,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs