./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:34:21,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:34:21,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:34:21,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:34:21,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:34:21,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:34:21,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:34:21,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:34:21,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:34:21,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:34:21,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:34:21,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:34:21,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:34:21,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:34:21,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:34:21,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:34:21,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:34:21,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:34:21,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:34:21,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:34:21,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:34:21,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:34:21,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:34:21,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:34:21,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:34:21,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:34:21,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:34:21,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:34:21,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:34:21,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:34:21,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:34:21,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:34:21,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:34:21,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:34:21,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:34:21,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:34:21,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:34:21,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:34:21,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:34:21,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:34:21,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:34:21,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:34:21,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:34:21,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:34:21,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:34:21,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:34:21,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:34:21,982 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:34:21,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:34:21,983 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:34:21,983 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:34:21,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:34:21,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:34:21,983 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:34:21,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:34:21,984 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:34:21,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:34:21,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:34:21,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:34:21,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:34:21,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:34:21,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:34:21,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:34:21,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:34:21,986 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_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 [2022-12-14 12:34:22,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:34:22,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:34:22,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:34:22,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:34:22,217 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:34:22,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-12-14 12:34:24,806 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:34:25,042 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:34:25,043 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2022-12-14 12:34:25,056 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/data/a8fc8e1d8/4c999ed6b81c48d4ad84fcef57f6bbd3/FLAG6824551e2 [2022-12-14 12:34:25,381 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/data/a8fc8e1d8/4c999ed6b81c48d4ad84fcef57f6bbd3 [2022-12-14 12:34:25,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:34:25,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:34:25,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:34:25,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:34:25,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:34:25,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:25,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b5e577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25, skipping insertion in model container [2022-12-14 12:34:25,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:25,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:34:25,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:34:25,650 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_2f847b71-50b2-4c57-a0d7-a203f7221155/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-12-14 12:34:25,711 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,771 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,777 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,777 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,791 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,855 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,856 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,857 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:34:25,882 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:34:25,895 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_2f847b71-50b2-4c57-a0d7-a203f7221155/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2022-12-14 12:34:25,907 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,909 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,911 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,911 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,912 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,916 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,917 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,941 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,942 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,944 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:34:25,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:34:25,976 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:34:25,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25 WrapperNode [2022-12-14 12:34:25,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:34:25,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:34:25,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:34:25,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:34:25,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,038 INFO L138 Inliner]: procedures = 137, calls = 246, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1139 [2022-12-14 12:34:26,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:34:26,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:34:26,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:34:26,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:34:26,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:34:26,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:34:26,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:34:26,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:34:26,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (1/1) ... [2022-12-14 12:34:26,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:34:26,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:34:26,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:34:26,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:34:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 12:34:26,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 12:34:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 12:34:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 12:34:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 12:34:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 12:34:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 12:34:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 12:34:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 12:34:26,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 12:34:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 12:34:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 12:34:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-12-14 12:34:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-12-14 12:34:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 12:34:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 12:34:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 12:34:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 12:34:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 12:34:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 12:34:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 12:34:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 12:34:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 12:34:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 12:34:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-14 12:34:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-14 12:34:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 12:34:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 12:34:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:34:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 12:34:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 12:34:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 12:34:26,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 12:34:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 12:34:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 12:34:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 12:34:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 12:34:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 12:34:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 12:34:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 12:34:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 12:34:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 12:34:26,164 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 12:34:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 12:34:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 12:34:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 12:34:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 12:34:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 12:34:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 12:34:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 12:34:26,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 12:34:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:34:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 12:34:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 12:34:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 12:34:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 12:34:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:34:26,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:34:26,316 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:34:26,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:34:26,979 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:34:27,354 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:34:27,354 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:34:27,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:34:27 BoogieIcfgContainer [2022-12-14 12:34:27,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:34:27,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:34:27,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:34:27,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:34:27,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:34:25" (1/3) ... [2022-12-14 12:34:27,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35857b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:34:27, skipping insertion in model container [2022-12-14 12:34:27,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:34:25" (2/3) ... [2022-12-14 12:34:27,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35857b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:34:27, skipping insertion in model container [2022-12-14 12:34:27,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:34:27" (3/3) ... [2022-12-14 12:34:27,365 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2022-12-14 12:34:27,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:34:27,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:34:27,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:34:27,428 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;@7a52711b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:34:27,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:34:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-12-14 12:34:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 12:34:27,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:27,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1] [2022-12-14 12:34:27,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1711890417, now seen corresponding path program 1 times [2022-12-14 12:34:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:27,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041589352] [2022-12-14 12:34:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:27,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 12:34:27,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:27,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041589352] [2022-12-14 12:34:27,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041589352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:27,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:27,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:34:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353715039] [2022-12-14 12:34:27,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:27,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:34:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:34:27,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:34:27,720 INFO L87 Difference]: Start difference. First operand has 239 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 139 states have internal predecessors, (172), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 12:34:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:27,853 INFO L93 Difference]: Finished difference Result 386 states and 511 transitions. [2022-12-14 12:34:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:34:27,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 112 [2022-12-14 12:34:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:27,863 INFO L225 Difference]: With dead ends: 386 [2022-12-14 12:34:27,863 INFO L226 Difference]: Without dead ends: 236 [2022-12-14 12:34:27,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:34:27,868 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:34:27,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-14 12:34:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-12-14 12:34:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 136 states have internal predecessors, (166), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 12:34:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 313 transitions. [2022-12-14 12:34:27,910 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 313 transitions. Word has length 112 [2022-12-14 12:34:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:27,911 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 313 transitions. [2022-12-14 12:34:27,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 12:34:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 313 transitions. [2022-12-14 12:34:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 12:34:27,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:27,915 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1] [2022-12-14 12:34:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:34:27,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -328786255, now seen corresponding path program 1 times [2022-12-14 12:34:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:27,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730992306] [2022-12-14 12:34:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 12:34:28,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:28,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730992306] [2022-12-14 12:34:28,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730992306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:28,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:28,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:34:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572950100] [2022-12-14 12:34:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:28,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:34:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:34:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:28,198 INFO L87 Difference]: Start difference. First operand 236 states and 313 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 12:34:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:28,324 INFO L93 Difference]: Finished difference Result 382 states and 496 transitions. [2022-12-14 12:34:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:34:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 113 [2022-12-14 12:34:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:28,327 INFO L225 Difference]: With dead ends: 382 [2022-12-14 12:34:28,328 INFO L226 Difference]: Without dead ends: 238 [2022-12-14 12:34:28,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:28,330 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:34:28,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-14 12:34:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-12-14 12:34:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 138 states have internal predecessors, (168), 74 states have call successors, (74), 29 states have call predecessors, (74), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-14 12:34:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2022-12-14 12:34:28,352 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 113 [2022-12-14 12:34:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:28,352 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2022-12-14 12:34:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-14 12:34:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2022-12-14 12:34:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-14 12:34:28,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:28,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 12:34:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:34:28,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash -872136035, now seen corresponding path program 1 times [2022-12-14 12:34:28,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:28,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858420324] [2022-12-14 12:34:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:28,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:28,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858420324] [2022-12-14 12:34:28,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858420324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:34:28,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:34:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:34:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232803245] [2022-12-14 12:34:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:34:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:34:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:34:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:34:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:28,456 INFO L87 Difference]: Start difference. First operand 238 states and 315 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:34:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:34:28,583 INFO L93 Difference]: Finished difference Result 511 states and 697 transitions. [2022-12-14 12:34:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:34:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 107 [2022-12-14 12:34:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:34:28,586 INFO L225 Difference]: With dead ends: 511 [2022-12-14 12:34:28,586 INFO L226 Difference]: Without dead ends: 291 [2022-12-14 12:34:28,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:34:28,589 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 59 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:34:28,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 550 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:34:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-12-14 12:34:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 286. [2022-12-14 12:34:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 168 states have (on average 1.3273809523809523) internal successors, (223), 172 states have internal predecessors, (223), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-12-14 12:34:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 398 transitions. [2022-12-14 12:34:28,612 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 398 transitions. Word has length 107 [2022-12-14 12:34:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:34:28,612 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 398 transitions. [2022-12-14 12:34:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 12:34:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 398 transitions. [2022-12-14 12:34:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 12:34:28,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:34:28,615 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 12:34:28,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:34:28,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:34:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:34:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 476778745, now seen corresponding path program 1 times [2022-12-14 12:34:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:34:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965263988] [2022-12-14 12:34:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:34:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:28,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:28,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965263988] [2022-12-14 12:34:28,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965263988] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:34:28,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836290740] [2022-12-14 12:34:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:34:28,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:34:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:34:28,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:34:28,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:34:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:29,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:34:29,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:34:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:29,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:34:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:34:29,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836290740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:34:29,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145040150] [2022-12-14 12:34:29,214 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-12-14 12:34:29,214 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:34:29,217 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:34:29,221 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:34:29,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:35:05,808 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:35:06,134 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 476 for LOIs [2022-12-14 12:35:44,284 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:35:44,605 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 474 for LOIs [2022-12-14 12:35:50,862 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 276 for LOIs [2022-12-14 12:36:06,324 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 435 for LOIs [2022-12-14 12:36:06,599 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 250 for LOIs [2022-12-14 12:36:07,342 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 250 for LOIs [2022-12-14 12:36:07,388 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-12-14 12:36:07,464 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 430 for LOIs [2022-12-14 12:36:08,118 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 446 for LOIs [2022-12-14 12:36:08,436 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2022-12-14 12:36:09,117 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 253 for LOIs [2022-12-14 12:36:09,168 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:36:50,890 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 592 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:38:00,026 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 430 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:38:06,851 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 449 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:39:00,840 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 585 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:39:07,208 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 582 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:39:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1145040150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:39:21,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:39:21,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [4, 4, 4] total 77 [2022-12-14 12:39:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120349560] [2022-12-14 12:39:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:39:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-14 12:39:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:39:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-14 12:39:21,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=5593, Unknown=0, NotChecked=0, Total=5852 [2022-12-14 12:39:21,241 INFO L87 Difference]: Start difference. First operand 286 states and 398 transitions. Second operand has 72 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 45 states have internal predecessors, (53), 21 states have call successors, (22), 13 states have call predecessors, (22), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 12:39:28,892 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 550 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:39:45,463 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 582 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:39:52,585 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 584 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:40:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:40:43,600 INFO L93 Difference]: Finished difference Result 796 states and 1184 transitions. [2022-12-14 12:40:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-14 12:40:43,602 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 45 states have internal predecessors, (53), 21 states have call successors, (22), 13 states have call predecessors, (22), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 108 [2022-12-14 12:40:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:40:43,608 INFO L225 Difference]: With dead ends: 796 [2022-12-14 12:40:43,608 INFO L226 Difference]: Without dead ends: 528 [2022-12-14 12:40:43,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 248 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1956 ImplicationChecksByTransitivity, 232.8s TimeCoverageRelationStatistics Valid=359, Invalid=7831, Unknown=0, NotChecked=0, Total=8190 [2022-12-14 12:40:43,615 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 309 mSDsluCounter, 8855 mSDsCounter, 0 mSdLazyCounter, 13848 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 9195 SdHoareTripleChecker+Invalid, 13890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 13848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2022-12-14 12:40:43,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 9195 Invalid, 13890 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [42 Valid, 13848 Invalid, 0 Unknown, 0 Unchecked, 40.8s Time] [2022-12-14 12:40:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-12-14 12:40:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 392. [2022-12-14 12:40:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 248 states have internal predecessors, (321), 109 states have call successors, (109), 41 states have call predecessors, (109), 39 states have return successors, (109), 104 states have call predecessors, (109), 108 states have call successors, (109) [2022-12-14 12:40:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 539 transitions. [2022-12-14 12:40:43,959 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 539 transitions. Word has length 108 [2022-12-14 12:40:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:40:43,960 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 539 transitions. [2022-12-14 12:40:43,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 45 states have internal predecessors, (53), 21 states have call successors, (22), 13 states have call predecessors, (22), 10 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-14 12:40:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 539 transitions. [2022-12-14 12:40:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 12:40:43,964 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:40:43,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-12-14 12:40:43,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:40:44,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:40:44,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:40:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:40:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1263612683, now seen corresponding path program 1 times [2022-12-14 12:40:44,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:40:44,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431721152] [2022-12-14 12:40:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:44,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:40:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:40:44,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:40:44,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431721152] [2022-12-14 12:40:44,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431721152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:40:44,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037330372] [2022-12-14 12:40:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:40:44,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:40:44,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:40:44,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:40:44,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:40:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:40:44,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:40:44,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:40:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:40:44,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:40:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:40:44,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037330372] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:40:44,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804634849] [2022-12-14 12:40:44,700 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2022-12-14 12:40:44,700 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:40:44,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:40:44,701 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:40:44,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:41:11,848 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:41:12,234 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-12-14 12:41:14,314 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:41:14,646 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2022-12-14 12:41:17,692 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 274 for LOIs [2022-12-14 12:41:38,349 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 453 for LOIs [2022-12-14 12:41:38,988 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-12-14 12:41:40,129 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-12-14 12:41:40,174 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-12-14 12:41:40,247 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 432 for LOIs [2022-12-14 12:41:41,419 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 12:41:41,500 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-12-14 12:41:43,462 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 12:41:43,508 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-12-14 12:41:43,590 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:42:27,389 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 593 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:42:33,172 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 563 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:42:58,517 WARN L233 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 474 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:31,334 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 432 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:38,271 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 451 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:43:59,612 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 518 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:44:08,266 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 528 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:44:32,909 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 587 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:44:38,842 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 584 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:45:11,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [804634849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:45:11,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:45:11,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [4, 4, 4] total 82 [2022-12-14 12:45:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988521119] [2022-12-14 12:45:11,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:45:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-14 12:45:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:45:11,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-14 12:45:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6341, Unknown=0, NotChecked=0, Total=6642 [2022-12-14 12:45:11,259 INFO L87 Difference]: Start difference. First operand 392 states and 539 transitions. Second operand has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 48 states have internal predecessors, (56), 22 states have call successors, (23), 14 states have call predecessors, (23), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 12:45:19,363 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 550 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:45:36,672 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 531 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:45:44,219 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 591 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:46:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:46:40,768 INFO L93 Difference]: Finished difference Result 676 states and 953 transitions. [2022-12-14 12:46:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-14 12:46:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 48 states have internal predecessors, (56), 22 states have call successors, (23), 14 states have call predecessors, (23), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 113 [2022-12-14 12:46:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:46:40,771 INFO L225 Difference]: With dead ends: 676 [2022-12-14 12:46:40,771 INFO L226 Difference]: Without dead ends: 539 [2022-12-14 12:46:40,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 251.4s TimeCoverageRelationStatistics Valid=401, Invalid=8719, Unknown=0, NotChecked=0, Total=9120 [2022-12-14 12:46:40,773 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 277 mSDsluCounter, 9121 mSDsCounter, 0 mSdLazyCounter, 14599 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 9463 SdHoareTripleChecker+Invalid, 14634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 14599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:46:40,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 9463 Invalid, 14634 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [35 Valid, 14599 Invalid, 0 Unknown, 0 Unchecked, 44.7s Time] [2022-12-14 12:46:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-12-14 12:46:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 397. [2022-12-14 12:46:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 246 states have (on average 1.3211382113821137) internal successors, (325), 251 states have internal predecessors, (325), 110 states have call successors, (110), 42 states have call predecessors, (110), 40 states have return successors, (110), 105 states have call predecessors, (110), 109 states have call successors, (110) [2022-12-14 12:46:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 545 transitions. [2022-12-14 12:46:40,975 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 545 transitions. Word has length 113 [2022-12-14 12:46:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:46:40,976 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 545 transitions. [2022-12-14 12:46:40,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 48 states have internal predecessors, (56), 22 states have call successors, (23), 14 states have call predecessors, (23), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-14 12:46:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 545 transitions. [2022-12-14 12:46:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 12:46:40,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:46:40,977 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1] [2022-12-14 12:46:40,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:46:41,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:46:41,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:46:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:46:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 367939741, now seen corresponding path program 1 times [2022-12-14 12:46:41,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:46:41,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843919986] [2022-12-14 12:46:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:46:41,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:46:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:46:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 12:46:41,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:46:41,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843919986] [2022-12-14 12:46:41,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843919986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:46:41,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685596207] [2022-12-14 12:46:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:46:41,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:46:41,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:46:41,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:46:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f847b71-50b2-4c57-a0d7-a203f7221155/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:46:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:46:41,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:46:41,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:46:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 12:46:41,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:46:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 12:46:41,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685596207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:46:41,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737384443] [2022-12-14 12:46:41,539 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-12-14 12:46:41,539 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:46:41,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:46:41,540 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:46:41,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:47:10,883 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:47:11,205 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 265 for LOIs [2022-12-14 12:47:13,177 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:47:13,490 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 265 for LOIs [2022-12-14 12:47:16,499 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 275 for LOIs [2022-12-14 12:47:40,144 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2022-12-14 12:47:40,776 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 429 for LOIs [2022-12-14 12:47:42,951 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 247 for LOIs [2022-12-14 12:47:43,025 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2022-12-14 12:47:43,674 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-12-14 12:47:43,715 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 12:47:49,012 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 249 for LOIs [2022-12-14 12:47:49,058 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 252 for LOIs [2022-12-14 12:47:49,108 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:48:27,546 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 592 DAG size of output: 464 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)