./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/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_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/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_d7f6e776-a769-4b39-b341-05c2d8eb06c9/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 bd6587ac6cf18c69f9c15caef5354ee5ad606346c35154ee0861ae3e169457d6 --- 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 12:56:26,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:56:26,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:56:27,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:56:27,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:56:27,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:56:27,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:56:27,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:56:27,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:56:27,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:56:27,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:56:27,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:56:27,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:56:27,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:56:27,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:56:27,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:56:27,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:56:27,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:56:27,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:56:27,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:56:27,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:56:27,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:56:27,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:56:27,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:56:27,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:56:27,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:56:27,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:56:27,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:56:27,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:56:27,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:56:27,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:56:27,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:56:27,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:56:27,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:56:27,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:56:27,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:56:27,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:56:27,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:56:27,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:56:27,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:56:27,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:56:27,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:56:27,062 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:56:27,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:56:27,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:56:27,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:56:27,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:56:27,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:56:27,064 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:56:27,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:56:27,064 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:56:27,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:56:27,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:56:27,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:56:27,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:56:27,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:56:27,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:56:27,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:56:27,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:56:27,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:56:27,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:56:27,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:56:27,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:56:27,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:56:27,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:56:27,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:56:27,069 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:56:27,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:56:27,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:56:27,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:56:27,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:56:27,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:56:27,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:56:27,070 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_d7f6e776-a769-4b39-b341-05c2d8eb06c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd6587ac6cf18c69f9c15caef5354ee5ad606346c35154ee0861ae3e169457d6 [2022-12-14 12:56:27,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:56:27,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:56:27,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:56:27,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:56:27,296 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:56:27,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product38.cil.c [2022-12-14 12:56:29,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:56:30,113 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:56:30,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c [2022-12-14 12:56:30,128 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/data/00bfa29fd/3f68c3ca4d754dd0bd7dfa35aa57ed79/FLAGb272e0aeb [2022-12-14 12:56:30,419 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/data/00bfa29fd/3f68c3ca4d754dd0bd7dfa35aa57ed79 [2022-12-14 12:56:30,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:56:30,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:56:30,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:56:30,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:56:30,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:56:30,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:30,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577ba11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30, skipping insertion in model container [2022-12-14 12:56:30,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:30,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:56:30,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:56:30,633 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_d7f6e776-a769-4b39-b341-05c2d8eb06c9/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c[9373,9386] [2022-12-14 12:56:30,679 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,681 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,684 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,768 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,782 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,782 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,783 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,788 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:56:30,807 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:56:30,829 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_d7f6e776-a769-4b39-b341-05c2d8eb06c9/sv-benchmarks/c/product-lines/email_spec0_product38.cil.c[9373,9386] [2022-12-14 12:56:30,832 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,833 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,836 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,885 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,887 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,889 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,889 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,890 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,893 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 12:56:30,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:56:30,936 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:56:30,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30 WrapperNode [2022-12-14 12:56:30,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:56:30,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:56:30,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:56:30,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:56:30,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:30,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,006 INFO L138 Inliner]: procedures = 124, calls = 195, calls flagged for inlining = 49, calls inlined = 46, statements flattened = 870 [2022-12-14 12:56:31,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:56:31,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:56:31,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:56:31,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:56:31,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:56:31,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:56:31,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:56:31,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:56:31,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (1/1) ... [2022-12-14 12:56:31,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:56:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:31,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:56:31,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:56:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 12:56:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 12:56:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 12:56:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 12:56:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2022-12-14 12:56:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2022-12-14 12:56:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 12:56:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 12:56:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 12:56:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 12:56:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 12:56:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 12:56:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 12:56:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:56:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:56:31,260 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:56:31,262 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:56:31,787 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:56:32,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:56:32,157 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:56:32,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:56:32 BoogieIcfgContainer [2022-12-14 12:56:32,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:56:32,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:56:32,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:56:32,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:56:32,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:56:30" (1/3) ... [2022-12-14 12:56:32,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9eb96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:56:32, skipping insertion in model container [2022-12-14 12:56:32,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:56:30" (2/3) ... [2022-12-14 12:56:32,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9eb96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:56:32, skipping insertion in model container [2022-12-14 12:56:32,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:56:32" (3/3) ... [2022-12-14 12:56:32,168 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product38.cil.c [2022-12-14 12:56:32,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:56:32,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:56:32,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:56:32,243 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;@5fed4270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:56:32,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:56:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 12:56:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 12:56:32,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:32,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:32,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 75598493, now seen corresponding path program 1 times [2022-12-14 12:56:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:32,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834380747] [2022-12-14 12:56:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:32,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:32,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:32,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834380747] [2022-12-14 12:56:32,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834380747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:32,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:32,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:56:32,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157482470] [2022-12-14 12:56:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:32,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:56:32,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:32,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:56:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:56:32,587 INFO L87 Difference]: Start difference. First operand has 156 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 92 states have internal predecessors, (119), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:32,671 INFO L93 Difference]: Finished difference Result 220 states and 297 transitions. [2022-12-14 12:56:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:56:32,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-12-14 12:56:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:32,680 INFO L225 Difference]: With dead ends: 220 [2022-12-14 12:56:32,680 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 12:56:32,683 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 12:56:32,685 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:32,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:56:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 12:56:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-12-14 12:56:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 89 states have internal predecessors, (113), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-14 12:56:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 206 transitions. [2022-12-14 12:56:32,722 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 206 transitions. Word has length 65 [2022-12-14 12:56:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:32,723 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 206 transitions. [2022-12-14 12:56:32,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 206 transitions. [2022-12-14 12:56:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 12:56:32,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:32,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:56:32,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1203752795, now seen corresponding path program 1 times [2022-12-14 12:56:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765404208] [2022-12-14 12:56:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:32,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765404208] [2022-12-14 12:56:32,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765404208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:32,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:32,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:56:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372582512] [2022-12-14 12:56:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:56:32,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:56:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:56:32,848 INFO L87 Difference]: Start difference. First operand 153 states and 206 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:32,929 INFO L93 Difference]: Finished difference Result 216 states and 282 transitions. [2022-12-14 12:56:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:56:32,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-12-14 12:56:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:32,931 INFO L225 Difference]: With dead ends: 216 [2022-12-14 12:56:32,931 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 12:56:32,931 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 12:56:32,932 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:32,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:56:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 12:56:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2022-12-14 12:56:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 47 states have call successors, (47), 18 states have call predecessors, (47), 18 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-12-14 12:56:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2022-12-14 12:56:32,943 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 66 [2022-12-14 12:56:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:32,944 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2022-12-14 12:56:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2022-12-14 12:56:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 12:56:32,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:32,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:56:32,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 341763036, now seen corresponding path program 1 times [2022-12-14 12:56:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:32,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106219212] [2022-12-14 12:56:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:33,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:33,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106219212] [2022-12-14 12:56:33,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106219212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:56:33,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:56:33,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:56:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165810785] [2022-12-14 12:56:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:56:33,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:56:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:56:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:56:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:56:33,012 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:56:33,096 INFO L93 Difference]: Finished difference Result 345 states and 483 transitions. [2022-12-14 12:56:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:56:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-12-14 12:56:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:56:33,100 INFO L225 Difference]: With dead ends: 345 [2022-12-14 12:56:33,100 INFO L226 Difference]: Without dead ends: 208 [2022-12-14 12:56:33,101 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 12:56:33,102 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 59 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:56:33,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 375 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:56:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-14 12:56:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2022-12-14 12:56:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 125 states have internal predecessors, (170), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-14 12:56:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2022-12-14 12:56:33,116 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 71 [2022-12-14 12:56:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:56:33,116 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2022-12-14 12:56:33,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 12:56:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2022-12-14 12:56:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 12:56:33,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:56:33,118 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:56:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:56:33,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:56:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:56:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1495710950, now seen corresponding path program 1 times [2022-12-14 12:56:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:56:33,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060214539] [2022-12-14 12:56:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:56:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:33,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:56:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060214539] [2022-12-14 12:56:33,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060214539] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:56:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890907920] [2022-12-14 12:56:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:56:33,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:56:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:56:33,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:56:33,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:56:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:56:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:56:33,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:56:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:33,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:56:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 12:56:33,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890907920] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:56:33,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894890446] [2022-12-14 12:56:33,566 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 12:56:33,566 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:56:33,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:56:33,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:56:33,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:56:53,014 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 12:56:53,315 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 12:56:53,606 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 244 for LOIs [2022-12-14 12:56:55,054 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 246 for LOIs [2022-12-14 12:56:55,712 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 226 for LOIs [2022-12-14 12:56:55,751 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 249 for LOIs [2022-12-14 12:56:57,837 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2022-12-14 12:56:57,875 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-12-14 12:56:59,716 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 12:56:59,754 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:57:38,903 WARN L233 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 585 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:57:51,277 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 472 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:58:12,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [894890446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:58:12,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:58:12,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-12-14 12:58:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415127453] [2022-12-14 12:58:12,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:58:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-14 12:58:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:58:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-14 12:58:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2407, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 12:58:12,494 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-14 12:58:19,830 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 580 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:58:37,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:37,260 INFO L93 Difference]: Finished difference Result 482 states and 721 transitions. [2022-12-14 12:58:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-14 12:58:37,261 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 72 [2022-12-14 12:58:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:37,263 INFO L225 Difference]: With dead ends: 482 [2022-12-14 12:58:37,263 INFO L226 Difference]: Without dead ends: 297 [2022-12-14 12:58:37,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 85.0s TimeCoverageRelationStatistics Valid=171, Invalid=2799, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 12:58:37,265 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 73 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 4806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:37,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 4312 Invalid, 4806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-12-14 12:58:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-14 12:58:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2022-12-14 12:58:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 163 states have (on average 1.3680981595092025) internal successors, (223), 166 states have internal predecessors, (223), 69 states have call successors, (69), 26 states have call predecessors, (69), 24 states have return successors, (68), 64 states have call predecessors, (68), 68 states have call successors, (68) [2022-12-14 12:58:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 360 transitions. [2022-12-14 12:58:37,352 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 360 transitions. Word has length 72 [2022-12-14 12:58:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:37,353 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 360 transitions. [2022-12-14 12:58:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 28 states have internal predecessors, (36), 15 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-14 12:58:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 360 transitions. [2022-12-14 12:58:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 12:58:37,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:37,355 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:58:37,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:58:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 12:58:37,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:58:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:37,557 INFO L85 PathProgramCache]: Analyzing trace with hash -116198476, now seen corresponding path program 1 times [2022-12-14 12:58:37,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041497553] [2022-12-14 12:58:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:37,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 12:58:37,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:37,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041497553] [2022-12-14 12:58:37,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041497553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:58:37,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:58:37,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:58:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117442853] [2022-12-14 12:58:37,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:58:37,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:58:37,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:58:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:58:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:58:37,628 INFO L87 Difference]: Start difference. First operand 257 states and 360 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:58:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:58:37,826 INFO L93 Difference]: Finished difference Result 616 states and 900 transitions. [2022-12-14 12:58:37,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:58:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-12-14 12:58:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:58:37,828 INFO L225 Difference]: With dead ends: 616 [2022-12-14 12:58:37,828 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 12:58:37,828 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 12:58:37,829 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 57 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:58:37,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 385 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:58:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 12:58:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 378. [2022-12-14 12:58:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 253 states have (on average 1.434782608695652) internal successors, (363), 256 states have internal predecessors, (363), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (99), 95 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-14 12:58:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 562 transitions. [2022-12-14 12:58:37,937 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 562 transitions. Word has length 77 [2022-12-14 12:58:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:58:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 562 transitions. [2022-12-14 12:58:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 12:58:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 562 transitions. [2022-12-14 12:58:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 12:58:37,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:58:37,939 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:58:37,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:58:37,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:58:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:58:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2021332479, now seen corresponding path program 1 times [2022-12-14 12:58:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:58:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444076662] [2022-12-14 12:58:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:58:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 12:58:38,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:58:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444076662] [2022-12-14 12:58:38,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444076662] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:58:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073273048] [2022-12-14 12:58:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:58:38,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:58:38,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:58:38,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:58:38,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:58:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:58:38,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:58:38,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:58:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 12:58:38,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:58:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 12:58:38,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073273048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:58:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699002525] [2022-12-14 12:58:38,299 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-12-14 12:58:38,299 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:58:38,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:58:38,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:58:38,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:59:21,166 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 12:59:21,465 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-12-14 12:59:21,769 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:00:01,470 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 583 DAG size of output: 432 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:16,231 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 580 DAG size of output: 444 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:23,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1699002525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:00:23,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:00:23,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 13:00:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583284220] [2022-12-14 13:00:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:00:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 13:00:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:00:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 13:00:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:00:23,282 INFO L87 Difference]: Start difference. First operand 378 states and 562 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-14 13:00:33,292 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 511 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:00:51,171 INFO L93 Difference]: Finished difference Result 765 states and 1186 transitions. [2022-12-14 13:00:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 13:00:51,172 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 78 [2022-12-14 13:00:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:00:51,174 INFO L225 Difference]: With dead ends: 765 [2022-12-14 13:00:51,174 INFO L226 Difference]: Without dead ends: 480 [2022-12-14 13:00:51,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 82.4s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 13:00:51,176 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 147 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:00:51,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2491 Invalid, 2045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-14 13:00:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-12-14 13:00:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 410. [2022-12-14 13:00:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 281 states have (on average 1.4377224199288257) internal successors, (404), 286 states have internal predecessors, (404), 103 states have call successors, (103), 27 states have call predecessors, (103), 25 states have return successors, (102), 96 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 13:00:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 609 transitions. [2022-12-14 13:00:51,377 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 609 transitions. Word has length 78 [2022-12-14 13:00:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:00:51,377 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 609 transitions. [2022-12-14 13:00:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-12-14 13:00:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 609 transitions. [2022-12-14 13:00:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 13:00:51,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:00:51,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:00:51,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:00:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:00:51,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:00:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:00:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash 113399462, now seen corresponding path program 1 times [2022-12-14 13:00:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:00:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011411518] [2022-12-14 13:00:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:00:51,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:00:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:00:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:00:51,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:00:51,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011411518] [2022-12-14 13:00:51,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011411518] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:00:51,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359744570] [2022-12-14 13:00:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:00:51,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:00:51,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:00:51,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:00:51,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:00:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:00:51,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:00:51,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:00:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:00:51,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:00:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:00:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359744570] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:00:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613492942] [2022-12-14 13:00:51,921 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-12-14 13:00:51,921 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:00:51,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:00:51,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:00:51,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:01:51,519 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 13:01:51,813 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 433 for LOIs [2022-12-14 13:01:52,121 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 452 for LOIs [2022-12-14 13:01:52,469 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2022-12-14 13:01:52,545 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 13:01:52,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:02:34,327 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 623 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:02:46,763 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 564 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:03:00,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [613492942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:03:00,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:03:00,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 13:03:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171714073] [2022-12-14 13:03:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:03:00,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 13:03:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:03:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 13:03:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 13:03:00,290 INFO L87 Difference]: Start difference. First operand 410 states and 609 transitions. Second operand has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 13:03:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:03:18,402 INFO L93 Difference]: Finished difference Result 850 states and 1330 transitions. [2022-12-14 13:03:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 13:03:18,403 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2022-12-14 13:03:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:03:18,405 INFO L225 Difference]: With dead ends: 850 [2022-12-14 13:03:18,405 INFO L226 Difference]: Without dead ends: 565 [2022-12-14 13:03:18,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 73.7s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 13:03:18,406 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 110 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:03:18,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3599 Invalid, 3436 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-12-14 13:03:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-12-14 13:03:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 455. [2022-12-14 13:03:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 319 states have (on average 1.438871473354232) internal successors, (459), 325 states have internal predecessors, (459), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (106), 99 states have call predecessors, (106), 106 states have call successors, (106) [2022-12-14 13:03:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 672 transitions. [2022-12-14 13:03:18,699 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 672 transitions. Word has length 81 [2022-12-14 13:03:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:03:18,699 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 672 transitions. [2022-12-14 13:03:18,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-14 13:03:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 672 transitions. [2022-12-14 13:03:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 13:03:18,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:03:18,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:03:18,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:03:18,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:18,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:03:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:03:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash 894105736, now seen corresponding path program 1 times [2022-12-14 13:03:18,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:03:18,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73125184] [2022-12-14 13:03:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:18,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:03:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:03:18,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:03:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73125184] [2022-12-14 13:03:18,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73125184] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:03:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728890710] [2022-12-14 13:03:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:03:18,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:03:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:03:18,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:03:18,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:03:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:03:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:03:19,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:03:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:03:19,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:03:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:03:19,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728890710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:03:19,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353476849] [2022-12-14 13:03:19,227 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 13:03:19,227 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:03:19,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:03:19,228 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:03:19,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:04:05,906 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:04:06,279 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 13:04:06,777 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:04:51,499 WARN L233 SmtUtils]: Spent 13.47s on a formula simplification. DAG size of input: 604 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:04,587 WARN L233 SmtUtils]: Spent 12.81s on a formula simplification. DAG size of input: 606 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:17,017 WARN L233 SmtUtils]: Spent 12.14s on a formula simplification. DAG size of input: 605 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:28,812 WARN L233 SmtUtils]: Spent 11.47s on a formula simplification. DAG size of input: 603 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:40,732 WARN L233 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 602 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:52,121 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 600 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [353476849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:06:01,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:06:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 13:06:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458354002] [2022-12-14 13:06:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:06:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 13:06:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:06:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 13:06:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 13:06:01,138 INFO L87 Difference]: Start difference. First operand 455 states and 672 transitions. Second operand has 29 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 13:06:12,920 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 558 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:18,365 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 565 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:24,955 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 556 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:30,761 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 563 DAG size of output: 445 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:36,745 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 554 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:43,016 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 599 DAG size of output: 432 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:48,679 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 597 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:06:54,780 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 600 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:05,577 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 601 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:17,648 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 606 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:28,936 WARN L233 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 597 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:07:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:07:34,253 INFO L93 Difference]: Finished difference Result 829 states and 1275 transitions. [2022-12-14 13:07:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 13:07:34,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 80 [2022-12-14 13:07:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:07:34,256 INFO L225 Difference]: With dead ends: 829 [2022-12-14 13:07:34,256 INFO L226 Difference]: Without dead ends: 544 [2022-12-14 13:07:34,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 198.3s TimeCoverageRelationStatistics Valid=374, Invalid=1882, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 13:07:34,257 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 218 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:07:34,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2763 Invalid, 2415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-12-14 13:07:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-12-14 13:07:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 475. [2022-12-14 13:07:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 339 states have (on average 1.4424778761061947) internal successors, (489), 345 states have internal predecessors, (489), 107 states have call successors, (107), 30 states have call predecessors, (107), 28 states have return successors, (106), 99 states have call predecessors, (106), 106 states have call successors, (106) [2022-12-14 13:07:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 702 transitions. [2022-12-14 13:07:34,605 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 702 transitions. Word has length 80 [2022-12-14 13:07:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:07:34,605 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 702 transitions. [2022-12-14 13:07:34,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-12-14 13:07:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 702 transitions. [2022-12-14 13:07:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 13:07:34,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:07:34,606 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2022-12-14 13:07:34,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:07:34,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:34,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:07:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:07:34,810 INFO L85 PathProgramCache]: Analyzing trace with hash 116909267, now seen corresponding path program 1 times [2022-12-14 13:07:34,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:07:34,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493503378] [2022-12-14 13:07:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:34,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:07:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 13:07:34,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:07:34,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493503378] [2022-12-14 13:07:34,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493503378] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:07:34,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464997723] [2022-12-14 13:07:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:07:34,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:07:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:07:34,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:07:34,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7f6e776-a769-4b39-b341-05c2d8eb06c9/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:07:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:07:35,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:07:35,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:07:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:07:35,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:07:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 13:07:35,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464997723] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:07:35,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757365225] [2022-12-14 13:07:35,205 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-12-14 13:07:35,205 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:07:35,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:07:35,206 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:07:35,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:08:07,026 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 13:08:07,327 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 13:08:07,630 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 249 for LOIs [2022-12-14 13:08:27,761 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 459 for LOIs [2022-12-14 13:08:31,387 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 439 for LOIs [2022-12-14 13:08:31,702 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 245 for LOIs [2022-12-14 13:08:33,654 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-12-14 13:08:33,690 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 447 for LOIs [2022-12-14 13:08:34,353 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 451 for LOIs [2022-12-14 13:08:34,651 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:09:14,537 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 590 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:09:21,155 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 589 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:09:36,807 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 591 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:10:28,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [757365225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:10:28,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:10:28,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [6, 5, 5] total 58 [2022-12-14 13:10:28,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125356883] [2022-12-14 13:10:28,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:10:28,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-14 13:10:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:10:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-14 13:10:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=3137, Unknown=0, NotChecked=0, Total=3306 [2022-12-14 13:10:28,662 INFO L87 Difference]: Start difference. First operand 475 states and 702 transitions. Second operand has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14)