./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9 --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 2586c6a9c5639b30d1f21b288976c8c026e2c567887902cc846265d5507c0a62 --- 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-6b4ec56 [2022-11-20 20:19:04,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:19:04,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:19:04,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:19:04,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:19:04,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:19:04,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:19:04,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:19:04,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:19:04,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:19:04,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:19:04,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:19:04,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:19:04,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:19:04,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:19:04,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:19:04,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:19:04,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:19:04,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:19:04,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:19:05,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:19:05,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:19:05,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:19:05,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:19:05,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:19:05,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:19:05,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:19:05,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:19:05,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:19:05,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:19:05,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:19:05,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:19:05,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:19:05,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:19:05,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:19:05,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:19:05,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:19:05,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:19:05,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:19:05,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:19:05,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:19:05,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:19:05,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:19:05,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:19:05,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:19:05,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:19:05,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:19:05,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:19:05,084 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:19:05,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:19:05,084 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:19:05,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:19:05,085 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:19:05,086 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:19:05,086 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:19:05,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:19:05,087 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:19:05,087 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:19:05,087 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:19:05,087 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:19:05,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:19:05,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:19:05,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:19:05,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:19:05,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:19:05,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:19:05,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:19:05,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:19:05,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:19:05,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:19:05,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:19:05,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:19:05,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:19:05,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:19:05,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:19:05,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:19:05,093 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:19:05,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:19:05,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:19:05,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:19:05,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:19:05,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:19:05,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:19:05,095 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_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2586c6a9c5639b30d1f21b288976c8c026e2c567887902cc846265d5507c0a62 [2022-11-20 20:19:05,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:19:05,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:19:05,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:19:05,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:19:05,447 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:19:05,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec7_product29.cil.c [2022-11-20 20:19:08,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:19:08,951 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:19:08,951 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/sv-benchmarks/c/product-lines/email_spec7_product29.cil.c [2022-11-20 20:19:08,979 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/data/d6896b617/e3fd102fdfc3410dac2cb7fda1f5b28f/FLAGe87014cc0 [2022-11-20 20:19:08,996 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/data/d6896b617/e3fd102fdfc3410dac2cb7fda1f5b28f [2022-11-20 20:19:08,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:19:09,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:19:09,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:19:09,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:19:09,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:19:09,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:19:08" (1/1) ... [2022-11-20 20:19:09,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6438cf7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09, skipping insertion in model container [2022-11-20 20:19:09,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:19:08" (1/1) ... [2022-11-20 20:19:09,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:19:09,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:19:09,475 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_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/sv-benchmarks/c/product-lines/email_spec7_product29.cil.c[16949,16962] [2022-11-20 20:19:09,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:19:09,839 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:19:09,890 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_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/sv-benchmarks/c/product-lines/email_spec7_product29.cil.c[16949,16962] [2022-11-20 20:19:09,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:19:09,987 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:19:09,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09 WrapperNode [2022-11-20 20:19:09,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:19:09,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:19:09,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:19:09,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:19:09,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,090 INFO L138 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 910 [2022-11-20 20:19:10,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:19:10,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:19:10,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:19:10,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:19:10,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:19:10,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:19:10,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:19:10,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:19:10,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (1/1) ... [2022-11-20 20:19:10,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:19:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:19:10,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:19:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:19:10,257 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:19:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:19:10,258 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:19:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:19:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:19:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:19:10,259 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:19:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:19:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:19:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:19:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:19:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:19:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:19:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:19:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:19:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:19:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:19:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:19:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:19:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:19:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:19:10,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:19:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:19:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:19:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:19:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:19:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:19:10,265 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:19:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-20 20:19:10,266 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-20 20:19:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:19:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:19:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:19:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:19:10,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:19:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:19:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:19:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:19:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:19:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:19:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:19:10,557 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:19:10,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:19:11,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:19:12,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:19:12,265 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:19:12,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:19:12 BoogieIcfgContainer [2022-11-20 20:19:12,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:19:12,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:19:12,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:19:12,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:19:12,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:19:08" (1/3) ... [2022-11-20 20:19:12,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ff43c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:19:12, skipping insertion in model container [2022-11-20 20:19:12,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:19:09" (2/3) ... [2022-11-20 20:19:12,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ff43c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:19:12, skipping insertion in model container [2022-11-20 20:19:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:19:12" (3/3) ... [2022-11-20 20:19:12,278 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product29.cil.c [2022-11-20 20:19:12,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:19:12,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:19:12,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:19:12,361 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;@98df457, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:19:12,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:19:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 118 states have (on average 1.305084745762712) internal successors, (154), 123 states have internal predecessors, (154), 62 states have call successors, (62), 28 states have call predecessors, (62), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-20 20:19:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 20:19:12,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:19:12,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:19:12,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:19:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:19:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1296521937, now seen corresponding path program 1 times [2022-11-20 20:19:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:19:12,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258123691] [2022-11-20 20:19:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:19:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:19:12,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:19:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258123691] [2022-11-20 20:19:12,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258123691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:12,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:19:12,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:19:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485270959] [2022-11-20 20:19:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:12,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:19:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:12,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:19:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:19:12,886 INFO L87 Difference]: Start difference. First operand has 210 states, 118 states have (on average 1.305084745762712) internal successors, (154), 123 states have internal predecessors, (154), 62 states have call successors, (62), 28 states have call predecessors, (62), 28 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:19:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:19:13,101 INFO L93 Difference]: Finished difference Result 328 states and 427 transitions. [2022-11-20 20:19:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:19:13,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 95 [2022-11-20 20:19:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:19:13,122 INFO L225 Difference]: With dead ends: 328 [2022-11-20 20:19:13,123 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 20:19:13,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:19:13,137 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:19:13,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:19:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 20:19:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-20 20:19:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 120 states have internal predecessors, (148), 62 states have call successors, (62), 28 states have call predecessors, (62), 28 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 20:19:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2022-11-20 20:19:13,230 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 95 [2022-11-20 20:19:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:19:13,232 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2022-11-20 20:19:13,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:19:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2022-11-20 20:19:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 20:19:13,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:19:13,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2022-11-20 20:19:13,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:19:13,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:19:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:19:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1851368785, now seen corresponding path program 1 times [2022-11-20 20:19:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:19:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268678592] [2022-11-20 20:19:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:19:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:19:13,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:19:13,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268678592] [2022-11-20 20:19:13,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268678592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:13,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:19:13,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:19:13,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255141828] [2022-11-20 20:19:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:19:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:19:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:19:13,659 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:19:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:19:13,821 INFO L93 Difference]: Finished difference Result 324 states and 412 transitions. [2022-11-20 20:19:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:19:13,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 85 [2022-11-20 20:19:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:19:13,824 INFO L225 Difference]: With dead ends: 324 [2022-11-20 20:19:13,824 INFO L226 Difference]: Without dead ends: 209 [2022-11-20 20:19:13,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:19:13,827 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:19:13,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:19:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-20 20:19:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-20 20:19:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.271186440677966) internal successors, (150), 122 states have internal predecessors, (150), 62 states have call successors, (62), 28 states have call predecessors, (62), 28 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-20 20:19:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 273 transitions. [2022-11-20 20:19:13,847 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 273 transitions. Word has length 85 [2022-11-20 20:19:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:19:13,847 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 273 transitions. [2022-11-20 20:19:13,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:19:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 273 transitions. [2022-11-20 20:19:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 20:19:13,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:19:13,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-11-20 20:19:13,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:19:13,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:19:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:19:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1390031811, now seen corresponding path program 1 times [2022-11-20 20:19:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:19:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091742237] [2022-11-20 20:19:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:19:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:19:13,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:19:13,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091742237] [2022-11-20 20:19:13,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091742237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:13,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:19:13,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:19:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428855881] [2022-11-20 20:19:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:13,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:19:13,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:19:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:19:14,000 INFO L87 Difference]: Start difference. First operand 209 states and 273 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:19:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:19:14,168 INFO L93 Difference]: Finished difference Result 453 states and 613 transitions. [2022-11-20 20:19:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:19:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 101 [2022-11-20 20:19:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:19:14,175 INFO L225 Difference]: With dead ends: 453 [2022-11-20 20:19:14,175 INFO L226 Difference]: Without dead ends: 262 [2022-11-20 20:19:14,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:19:14,178 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 59 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:19:14,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 482 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:19:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-20 20:19:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 257. [2022-11-20 20:19:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 156 states have internal predecessors, (205), 76 states have call successors, (76), 28 states have call predecessors, (76), 28 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-20 20:19:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 356 transitions. [2022-11-20 20:19:14,204 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 356 transitions. Word has length 101 [2022-11-20 20:19:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:19:14,205 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 356 transitions. [2022-11-20 20:19:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:19:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 356 transitions. [2022-11-20 20:19:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 20:19:14,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:19:14,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2022-11-20 20:19:14,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:19:14,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:19:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:19:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 121606636, now seen corresponding path program 1 times [2022-11-20 20:19:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:19:14,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863186894] [2022-11-20 20:19:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:19:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:19:14,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:19:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863186894] [2022-11-20 20:19:14,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863186894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:19:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583866210] [2022-11-20 20:19:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:14,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:19:14,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:19:14,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:19:14,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:19:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:19:14,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:19:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:19:14,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:19:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:19:15,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583866210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:19:15,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1982025795] [2022-11-20 20:19:15,117 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-20 20:19:15,117 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:19:15,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:19:15,133 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:19:15,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:19:46,206 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-20 20:19:46,515 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-11-20 20:19:48,522 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-20 20:19:48,572 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-20 20:19:48,882 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2022-11-20 20:19:52,254 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 260 for LOIs [2022-11-20 20:20:06,838 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 245 for LOIs [2022-11-20 20:20:07,530 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-20 20:20:07,571 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 455 for LOIs [2022-11-20 20:20:08,160 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 243 for LOIs [2022-11-20 20:20:08,228 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2022-11-20 20:20:08,814 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-20 20:20:12,067 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 248 for LOIs [2022-11-20 20:20:12,123 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:20:55,748 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 486 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:01,670 WARN L233 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 498 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:09,467 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 508 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:19,279 WARN L233 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 564 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:26,891 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 559 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:32,403 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 563 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:37,871 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 559 DAG size of output: 321 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:43,404 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 565 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:59,917 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:23,050 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 455 DAG size of output: 260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:29,128 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 481 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:53,414 WARN L233 SmtUtils]: Spent 11.61s on a formula simplification. DAG size of input: 437 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:05,988 WARN L233 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 456 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:12,565 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 461 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:27,659 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 470 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:35,088 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 512 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:16,137 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 460 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:30,323 WARN L233 SmtUtils]: Spent 13.18s on a formula simplification. DAG size of input: 592 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:41,172 WARN L233 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 589 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:41,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3639#(and (= ~queued_client~0 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1| 1) (<= |outgoing__wrappee__Encrypt_~tmp~10#1| 2) (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~25#1| 2147483648)) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~25#1| 2147483647) (<= |outgoing__wrappee__Encrypt_~receiver~0#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_email_encryptionKey1~0 0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~client#1|) (<= |outgoing__wrappee__Encrypt_mail_#in~msg#1| 1) (<= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= |outgoing__wrappee__Encrypt_~pubkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Encrypt_#in~client#1| 1) (<= 2 |outgoing__wrappee__Encrypt_incoming_#in~client#1|) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 0 (+ |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~9#1| 2147483648)) (<= |outgoing__wrappee__Encrypt_mail_~msg#1| 1) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (<= 2 |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~9#1| 2147483647) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing__wrappee__Encrypt_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~tmp~7#1| 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (= ~head~0.offset 0) (<= |outgoing__wrappee__Encrypt_incoming_~msg#1| 1) (= ~__ste_client_name0~0.offset 0) (<= 2 |outgoing__wrappee__Encrypt_mail_~tmp~8#1|) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~client#1|) (<= 1 |outgoing__wrappee__Encrypt_incoming_~msg#1|) (<= |outgoing__wrappee__Encrypt_mail_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__Encrypt_incoming_~client#1| 2) (= |outgoing__wrappee__Encrypt_verify_~__utac__ad__arg1~0#1| |outgoing__wrappee__Encrypt_verify_~msg#1|) (<= |outgoing__wrappee__Encrypt_incoming_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~msg#1| |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (<= 0 |outgoing__wrappee__Encrypt_~tmp___0~3#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__Encrypt_~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt_#in~client#1|) (= ~__ste_email_id0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (= |outgoing__wrappee__Encrypt_verify_~client#1| |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming_~client#1|) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_~handle#1| 1) (<= |outgoing__wrappee__Encrypt_~msg#1| 1) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_#in~handle#1| 1) (<= 1 |outgoing__wrappee__Encrypt_getClientId_#in~handle#1|) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 1 |outgoing__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__Encrypt_mail_~tmp~8#1| 2) (<= |outgoing__wrappee__Encrypt_#in~msg#1| 1) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Base~0 0) (<= 2 |outgoing__wrappee__Encrypt_~receiver~0#1|) (= ~__ste_client_forwardReceiver0~0 0) (<= 2 |outgoing__wrappee__Encrypt_~tmp~10#1|) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (= ~__ste_client_name2~0.base 0) (<= 1 |outgoing__wrappee__Encrypt_~msg#1|) (<= |outgoing__wrappee__Encrypt_incoming_~tmp~12#1| 0) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__ste_email_subject1~0.base 0) (<= |outgoing__wrappee__Encrypt_incoming_#in~client#1| 2) (<= 0 |outgoing__wrappee__Encrypt_incoming_~tmp~12#1|) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__Encrypt_getClientId_~handle#1|) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1| 1) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__Encrypt_verify_~msg#1| 1) (= |#NULL.offset| 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (= |outgoing__wrappee__Encrypt_verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__Encrypt_mail_#in~client#1| 1) (= ~queued_message~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__Encrypt_incoming_#in~msg#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (= |outgoing__wrappee__Encrypt_incoming_~privkey~0#1| |outgoing__wrappee__Encrypt_incoming_~tmp~12#1|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing__wrappee__Encrypt_verify_~client#1| 2) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483648)) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~msg#1|) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= |outgoing__wrappee__Encrypt_~tmp___0~3#1| 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 2 |outgoing__wrappee__Encrypt_incoming_~client#1|) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483647) (<= 1 |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1|))' at error location [2022-11-20 20:24:41,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:24:41,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:24:41,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 20:24:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315382103] [2022-11-20 20:24:41,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:24:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:24:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:24:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=5028, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 20:24:41,185 INFO L87 Difference]: Start difference. First operand 257 states and 356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:24:41,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:41,574 INFO L93 Difference]: Finished difference Result 647 states and 962 transitions. [2022-11-20 20:24:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:24:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-11-20 20:24:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:41,584 INFO L225 Difference]: With dead ends: 647 [2022-11-20 20:24:41,584 INFO L226 Difference]: Without dead ends: 532 [2022-11-20 20:24:41,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 269.0s TimeCoverageRelationStatistics Valid=228, Invalid=5028, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 20:24:41,592 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 222 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:41,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1101 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:24:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-20 20:24:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 517. [2022-11-20 20:24:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 333 states have (on average 1.4744744744744744) internal successors, (491), 337 states have internal predecessors, (491), 155 states have call successors, (155), 28 states have call predecessors, (155), 28 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-20 20:24:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 800 transitions. [2022-11-20 20:24:41,661 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 800 transitions. Word has length 91 [2022-11-20 20:24:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:41,662 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 800 transitions. [2022-11-20 20:24:41,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:24:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 800 transitions. [2022-11-20 20:24:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 20:24:41,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:41,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:24:41,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb50f9d-f0a7-4121-ba0c-06f5b5ec0e30/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:41,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1818999473, now seen corresponding path program 1 times [2022-11-20 20:24:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:41,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295263251] [2022-11-20 20:24:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:41,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:24:42,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:42,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295263251] [2022-11-20 20:24:42,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295263251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:42,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:42,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548802584] [2022-11-20 20:24:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:42,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:42,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,025 INFO L87 Difference]: Start difference. First operand 517 states and 800 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:42,164 INFO L93 Difference]: Finished difference Result 1264 states and 1998 transitions. [2022-11-20 20:24:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 108 [2022-11-20 20:24:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:42,170 INFO L225 Difference]: With dead ends: 1264 [2022-11-20 20:24:42,170 INFO L226 Difference]: Without dead ends: 779 [2022-11-20 20:24:42,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,172 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:42,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 485 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-20 20:24:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 774. [2022-11-20 20:24:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 511 states have (on average 1.4951076320939334) internal successors, (764), 515 states have internal predecessors, (764), 234 states have call successors, (234), 28 states have call predecessors, (234), 28 states have return successors, (233), 232 states have call predecessors, (233), 233 states have call successors, (233) [2022-11-20 20:24:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1231 transitions. [2022-11-20 20:24:42,218 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1231 transitions. Word has length 108 [2022-11-20 20:24:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:42,218 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1231 transitions. [2022-11-20 20:24:42,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1231 transitions. [2022-11-20 20:24:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 20:24:42,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:42,223 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:24:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:24:42,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 732466429, now seen corresponding path program 1 times [2022-11-20 20:24:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:42,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776281773] [2022-11-20 20:24:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:24:42,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776281773] [2022-11-20 20:24:42,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776281773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:42,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:42,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137708713] [2022-11-20 20:24:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:42,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,324 INFO L87 Difference]: Start difference. First operand 774 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:42,470 INFO L93 Difference]: Finished difference Result 1886 states and 3045 transitions. [2022-11-20 20:24:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 109 [2022-11-20 20:24:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:42,478 INFO L225 Difference]: With dead ends: 1886 [2022-11-20 20:24:42,478 INFO L226 Difference]: Without dead ends: 1174 [2022-11-20 20:24:42,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,496 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 55 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:42,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 479 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-11-20 20:24:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1169. [2022-11-20 20:24:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 787 states have (on average 1.5044472681067345) internal successors, (1184), 791 states have internal predecessors, (1184), 353 states have call successors, (353), 28 states have call predecessors, (353), 28 states have return successors, (352), 351 states have call predecessors, (352), 352 states have call successors, (352) [2022-11-20 20:24:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1889 transitions. [2022-11-20 20:24:42,570 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1889 transitions. Word has length 109 [2022-11-20 20:24:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:42,572 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1889 transitions. [2022-11-20 20:24:42,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1889 transitions. [2022-11-20 20:24:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 20:24:42,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:42,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2022-11-20 20:24:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:24:42,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash 29356075, now seen corresponding path program 1 times [2022-11-20 20:24:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952657618] [2022-11-20 20:24:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:24:42,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952657618] [2022-11-20 20:24:42,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952657618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:42,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:42,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783120072] [2022-11-20 20:24:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,687 INFO L87 Difference]: Start difference. First operand 1169 states and 1889 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:42,864 INFO L93 Difference]: Finished difference Result 2789 states and 4557 transitions. [2022-11-20 20:24:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 99 [2022-11-20 20:24:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:42,874 INFO L225 Difference]: With dead ends: 2789 [2022-11-20 20:24:42,874 INFO L226 Difference]: Without dead ends: 1762 [2022-11-20 20:24:42,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:42,878 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 53 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:42,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 475 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-11-20 20:24:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1757. [2022-11-20 20:24:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1213 states have (on average 1.5103050288540807) internal successors, (1832), 1217 states have internal predecessors, (1832), 515 states have call successors, (515), 28 states have call predecessors, (515), 28 states have return successors, (514), 513 states have call predecessors, (514), 514 states have call successors, (514) [2022-11-20 20:24:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2861 transitions. [2022-11-20 20:24:42,990 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2861 transitions. Word has length 99 [2022-11-20 20:24:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:42,991 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2861 transitions. [2022-11-20 20:24:42,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2861 transitions. [2022-11-20 20:24:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 20:24:43,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:43,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:43,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:24:43,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash 157957692, now seen corresponding path program 1 times [2022-11-20 20:24:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896918987] [2022-11-20 20:24:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:43,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:24:43,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:43,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896918987] [2022-11-20 20:24:43,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896918987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:43,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:43,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626278448] [2022-11-20 20:24:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:43,095 INFO L87 Difference]: Start difference. First operand 1757 states and 2861 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:43,348 INFO L93 Difference]: Finished difference Result 4174 states and 6865 transitions. [2022-11-20 20:24:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:43,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 100 [2022-11-20 20:24:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:43,364 INFO L225 Difference]: With dead ends: 4174 [2022-11-20 20:24:43,364 INFO L226 Difference]: Without dead ends: 2696 [2022-11-20 20:24:43,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:43,369 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 51 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:43,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 475 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2022-11-20 20:24:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2691. [2022-11-20 20:24:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 1902 states have (on average 1.5131440588853837) internal successors, (2878), 1906 states have internal predecessors, (2878), 760 states have call successors, (760), 28 states have call predecessors, (760), 28 states have return successors, (759), 758 states have call predecessors, (759), 759 states have call successors, (759) [2022-11-20 20:24:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 4397 transitions. [2022-11-20 20:24:43,570 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 4397 transitions. Word has length 100 [2022-11-20 20:24:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:43,570 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 4397 transitions. [2022-11-20 20:24:43,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 4397 transitions. [2022-11-20 20:24:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 20:24:43,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:43,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:24:43,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:43,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1790730343, now seen corresponding path program 1 times [2022-11-20 20:24:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:43,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590995426] [2022-11-20 20:24:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:43,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:24:43,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:43,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590995426] [2022-11-20 20:24:43,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590995426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:43,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:43,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249808223] [2022-11-20 20:24:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:43,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:43,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:43,673 INFO L87 Difference]: Start difference. First operand 2691 states and 4397 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:44,033 INFO L93 Difference]: Finished difference Result 6690 states and 11025 transitions. [2022-11-20 20:24:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 101 [2022-11-20 20:24:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:44,057 INFO L225 Difference]: With dead ends: 6690 [2022-11-20 20:24:44,058 INFO L226 Difference]: Without dead ends: 4421 [2022-11-20 20:24:44,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:44,065 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 49 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:44,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 489 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-11-20 20:24:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4416. [2022-11-20 20:24:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 3134 states have (on average 1.5031908104658582) internal successors, (4711), 3138 states have internal predecessors, (4711), 1253 states have call successors, (1253), 28 states have call predecessors, (1253), 28 states have return successors, (1252), 1251 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-20 20:24:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 7216 transitions. [2022-11-20 20:24:44,383 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 7216 transitions. Word has length 101 [2022-11-20 20:24:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 4416 states and 7216 transitions. [2022-11-20 20:24:44,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 7216 transitions. [2022-11-20 20:24:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 20:24:44,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:44,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2022-11-20 20:24:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:24:44,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 236954112, now seen corresponding path program 1 times [2022-11-20 20:24:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:44,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872671812] [2022-11-20 20:24:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:24:44,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:44,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872671812] [2022-11-20 20:24:44,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872671812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:44,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:44,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587420401] [2022-11-20 20:24:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:44,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:44,485 INFO L87 Difference]: Start difference. First operand 4416 states and 7216 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:45,037 INFO L93 Difference]: Finished difference Result 11106 states and 18310 transitions. [2022-11-20 20:24:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2022-11-20 20:24:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:45,082 INFO L225 Difference]: With dead ends: 11106 [2022-11-20 20:24:45,082 INFO L226 Difference]: Without dead ends: 7378 [2022-11-20 20:24:45,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:45,097 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 47 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:45,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 478 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-11-20 20:24:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 7373. [2022-11-20 20:24:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 5269 states have (on average 1.4985765799962043) internal successors, (7896), 5273 states have internal predecessors, (7896), 2075 states have call successors, (2075), 28 states have call predecessors, (2075), 28 states have return successors, (2074), 2073 states have call predecessors, (2074), 2074 states have call successors, (2074) [2022-11-20 20:24:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 12045 transitions. [2022-11-20 20:24:45,800 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 12045 transitions. Word has length 102 [2022-11-20 20:24:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:45,800 INFO L495 AbstractCegarLoop]: Abstraction has 7373 states and 12045 transitions. [2022-11-20 20:24:45,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 12045 transitions. [2022-11-20 20:24:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 20:24:45,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:45,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:24:45,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:24:45,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 27617519, now seen corresponding path program 1 times [2022-11-20 20:24:45,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:45,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161447083] [2022-11-20 20:24:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:24:45,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161447083] [2022-11-20 20:24:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161447083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:45,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:45,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915136765] [2022-11-20 20:24:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:45,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:45,949 INFO L87 Difference]: Start difference. First operand 7373 states and 12045 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:46,860 INFO L93 Difference]: Finished difference Result 18573 states and 30572 transitions. [2022-11-20 20:24:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:46,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2022-11-20 20:24:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:46,924 INFO L225 Difference]: With dead ends: 18573 [2022-11-20 20:24:46,924 INFO L226 Difference]: Without dead ends: 12322 [2022-11-20 20:24:46,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:46,948 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 45 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:46,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 474 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-11-20 20:24:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 12317. [2022-11-20 20:24:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12317 states, 9010 states have (on average 1.500221975582686) internal successors, (13517), 9014 states have internal predecessors, (13517), 3278 states have call successors, (3278), 28 states have call predecessors, (3278), 28 states have return successors, (3277), 3276 states have call predecessors, (3277), 3277 states have call successors, (3277) [2022-11-20 20:24:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12317 states to 12317 states and 20072 transitions. [2022-11-20 20:24:47,998 INFO L78 Accepts]: Start accepts. Automaton has 12317 states and 20072 transitions. Word has length 114 [2022-11-20 20:24:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:47,999 INFO L495 AbstractCegarLoop]: Abstraction has 12317 states and 20072 transitions. [2022-11-20 20:24:47,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 12317 states and 20072 transitions. [2022-11-20 20:24:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 20:24:48,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:48,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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] [2022-11-20 20:24:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:24:48,032 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:48,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1802136001, now seen corresponding path program 1 times [2022-11-20 20:24:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:48,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991321334] [2022-11-20 20:24:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 20:24:48,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:48,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991321334] [2022-11-20 20:24:48,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991321334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:48,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:48,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146113082] [2022-11-20 20:24:48,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:48,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:48,127 INFO L87 Difference]: Start difference. First operand 12317 states and 20072 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:49,858 INFO L93 Difference]: Finished difference Result 32577 states and 53434 transitions. [2022-11-20 20:24:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:49,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2022-11-20 20:24:49,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:49,948 INFO L225 Difference]: With dead ends: 32577 [2022-11-20 20:24:49,949 INFO L226 Difference]: Without dead ends: 21834 [2022-11-20 20:24:49,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:49,979 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 43 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:49,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 478 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21834 states. [2022-11-20 20:24:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21834 to 21829. [2022-11-20 20:24:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21829 states, 16072 states have (on average 1.4926580388252861) internal successors, (23990), 16076 states have internal predecessors, (23990), 5728 states have call successors, (5728), 28 states have call predecessors, (5728), 28 states have return successors, (5727), 5726 states have call predecessors, (5727), 5727 states have call successors, (5727) [2022-11-20 20:24:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21829 states to 21829 states and 35445 transitions. [2022-11-20 20:24:51,792 INFO L78 Accepts]: Start accepts. Automaton has 21829 states and 35445 transitions. Word has length 104 [2022-11-20 20:24:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:51,794 INFO L495 AbstractCegarLoop]: Abstraction has 21829 states and 35445 transitions. [2022-11-20 20:24:51,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 20:24:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 21829 states and 35445 transitions. [2022-11-20 20:24:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 20:24:51,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:51,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:24:51,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:24:51,834 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:51,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1840019819, now seen corresponding path program 1 times [2022-11-20 20:24:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:51,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382382708] [2022-11-20 20:24:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:24:51,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:51,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382382708] [2022-11-20 20:24:51,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382382708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:51,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:51,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:51,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259845910] [2022-11-20 20:24:51,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:51,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:51,938 INFO L87 Difference]: Start difference. First operand 21829 states and 35445 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:54,481 INFO L93 Difference]: Finished difference Result 59264 states and 96686 transitions. [2022-11-20 20:24:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:24:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 116 [2022-11-20 20:24:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:54,644 INFO L225 Difference]: With dead ends: 59264 [2022-11-20 20:24:54,644 INFO L226 Difference]: Without dead ends: 39604 [2022-11-20 20:24:54,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:54,697 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 41 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:54,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 479 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:24:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39604 states. [2022-11-20 20:24:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39604 to 39599. [2022-11-20 20:24:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39599 states, 29329 states have (on average 1.4820143884892085) internal successors, (43466), 29333 states have internal predecessors, (43466), 10241 states have call successors, (10241), 28 states have call predecessors, (10241), 28 states have return successors, (10240), 10239 states have call predecessors, (10240), 10240 states have call successors, (10240) [2022-11-20 20:24:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39599 states to 39599 states and 63947 transitions. [2022-11-20 20:24:58,140 INFO L78 Accepts]: Start accepts. Automaton has 39599 states and 63947 transitions. Word has length 116 [2022-11-20 20:24:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:58,141 INFO L495 AbstractCegarLoop]: Abstraction has 39599 states and 63947 transitions. [2022-11-20 20:24:58,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:24:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 39599 states and 63947 transitions. [2022-11-20 20:24:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 20:24:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:58,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:24:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:24:58,183 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -14004489, now seen corresponding path program 1 times [2022-11-20 20:24:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:58,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034192180] [2022-11-20 20:24:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:24:58,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:58,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034192180] [2022-11-20 20:24:58,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034192180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:24:58,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:24:58,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:24:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808857595] [2022-11-20 20:24:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:24:58,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:24:58,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:24:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:24:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:24:58,303 INFO L87 Difference]: Start difference. First operand 39599 states and 63947 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:25:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:25:02,762 INFO L93 Difference]: Finished difference Result 73162 states and 118321 transitions. [2022-11-20 20:25:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:25:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 117 [2022-11-20 20:25:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:25:03,219 INFO L225 Difference]: With dead ends: 73162 [2022-11-20 20:25:03,219 INFO L226 Difference]: Without dead ends: 73047 [2022-11-20 20:25:03,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:25:03,244 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 39 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:25:03,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 478 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:25:03,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73047 states. [2022-11-20 20:25:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73047 to 73042. [2022-11-20 20:25:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73042 states, 54404 states have (on average 1.4680538195720902) internal successors, (79868), 54408 states have internal predecessors, (79868), 18609 states have call successors, (18609), 28 states have call predecessors, (18609), 28 states have return successors, (18608), 18607 states have call predecessors, (18608), 18608 states have call successors, (18608) [2022-11-20 20:25:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73042 states to 73042 states and 117085 transitions. [2022-11-20 20:25:08,779 INFO L78 Accepts]: Start accepts. Automaton has 73042 states and 117085 transitions. Word has length 117 [2022-11-20 20:25:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:25:08,780 INFO L495 AbstractCegarLoop]: Abstraction has 73042 states and 117085 transitions. [2022-11-20 20:25:08,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 20:25:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 73042 states and 117085 transitions. [2022-11-20 20:25:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 20:25:08,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:25:08,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2022-11-20 20:25:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:25:08,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:25:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:25:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1438958474, now seen corresponding path program 1 times [2022-11-20 20:25:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:25:08,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055065309] [2022-11-20 20:25:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:25:08,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:25:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:25:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 20:25:09,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:25:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055065309] [2022-11-20 20:25:09,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055065309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:25:09,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:25:09,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 20:25:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620340719] [2022-11-20 20:25:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:25:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:25:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:25:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:25:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:25:09,794 INFO L87 Difference]: Start difference. First operand 73042 states and 117085 transitions. Second operand has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-11-20 20:25:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:25:16,576 INFO L93 Difference]: Finished difference Result 103954 states and 166940 transitions. [2022-11-20 20:25:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:25:16,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 6 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 118 [2022-11-20 20:25:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:25:17,047 INFO L225 Difference]: With dead ends: 103954 [2022-11-20 20:25:17,048 INFO L226 Difference]: Without dead ends: 103842 [2022-11-20 20:25:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:25:17,088 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 274 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:25:17,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2193 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:25:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103842 states.