./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V --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 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:22:27,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:22:27,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:22:27,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:22:27,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:22:27,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:22:27,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:22:27,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:22:27,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:22:27,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:22:27,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:22:27,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:22:27,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:22:27,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:22:27,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:22:27,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:22:27,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:22:27,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:22:27,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:22:27,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:22:27,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:22:27,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:22:27,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:22:27,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:22:27,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:22:27,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:22:27,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:22:27,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:22:27,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:22:27,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:22:27,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:22:27,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:22:27,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:22:27,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:22:27,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:22:27,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:22:27,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:22:27,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:22:27,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:22:27,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:22:27,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:22:27,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:22:28,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:22:28,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:22:28,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:22:28,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:22:28,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:22:28,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:22:28,010 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:22:28,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:22:28,011 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:22:28,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:22:28,012 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:22:28,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:22:28,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:22:28,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:22:28,014 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:22:28,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:22:28,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:22:28,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:22:28,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:22:28,017 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:22:28,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:22:28,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:22:28,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:22:28,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:22:28,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:22:28,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:22:28,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:22:28,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:22:28,021 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:22:28,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:22:28,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:22:28,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:22:28,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:22:28,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:22:28,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:22:28,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:22:28,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:22:28,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:22:28,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:22:28,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:22:28,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:22:28,026 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb2b79cb955f3674656871a8781fc51d3f295e24daabeaa86e62b128ba42f2a [2021-11-23 03:22:28,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:22:28,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:22:28,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:22:28,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:22:28,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:22:28,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2021-11-23 03:22:28,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/data/9ac48cea4/327e08c25fd8400daad0dea1832dfbe8/FLAGffbabc4c7 [2021-11-23 03:22:29,064 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:22:29,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c [2021-11-23 03:22:29,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/data/9ac48cea4/327e08c25fd8400daad0dea1832dfbe8/FLAGffbabc4c7 [2021-11-23 03:22:29,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/data/9ac48cea4/327e08c25fd8400daad0dea1832dfbe8 [2021-11-23 03:22:29,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:22:29,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:22:29,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:22:29,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:22:29,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:22:29,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:29" (1/1) ... [2021-11-23 03:22:29,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106ee964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:29, skipping insertion in model container [2021-11-23 03:22:29,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:29" (1/1) ... [2021-11-23 03:22:29,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:22:29,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:22:29,859 WARN L230 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_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2021-11-23 03:22:30,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:22:30,103 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:22:30,168 WARN L230 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_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/sv-benchmarks/c/product-lines/email_spec7_product23.cil.c[18387,18400] [2021-11-23 03:22:30,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:22:30,285 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:22:30,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30 WrapperNode [2021-11-23 03:22:30,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:22:30,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:22:30,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:22:30,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:22:30,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,417 INFO L137 Inliner]: procedures = 130, calls = 215, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 978 [2021-11-23 03:22:30,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:22:30,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:22:30,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:22:30,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:22:30,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:22:30,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:22:30,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:22:30,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:22:30,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (1/1) ... [2021-11-23 03:22:30,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:22:30,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:22:30,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:22:30,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:22:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:22:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:22:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:22:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:22:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:22:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:22:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:22:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:22:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:22:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:22:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:22:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:22:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:22:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:22:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:22:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:22:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:22:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:22:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:22:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:22:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:22:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:22:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:22:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:22:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:22:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:22:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:22:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:22:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:22:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:22:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:22:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:22:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:22:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:22:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:22:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:22:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:22:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:22:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:22:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:22:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:22:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:22:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:22:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:22:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:22:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:22:30,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:22:30,925 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:22:30,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:22:31,735 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:22:32,231 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:22:32,232 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:22:32,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:32 BoogieIcfgContainer [2021-11-23 03:22:32,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:22:32,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:22:32,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:22:32,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:22:32,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:29" (1/3) ... [2021-11-23 03:22:32,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508ab628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:32, skipping insertion in model container [2021-11-23 03:22:32,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:30" (2/3) ... [2021-11-23 03:22:32,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508ab628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:32, skipping insertion in model container [2021-11-23 03:22:32,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:32" (3/3) ... [2021-11-23 03:22:32,246 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product23.cil.c [2021-11-23 03:22:32,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:22:32,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:22:32,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:22:32,324 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:22:32,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:22:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 03:22:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:22:32,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:32,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:32,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 207041302, now seen corresponding path program 1 times [2021-11-23 03:22:32,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:32,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168880165] [2021-11-23 03:22:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:32,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:32,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168880165] [2021-11-23 03:22:32,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168880165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:32,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:32,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:22:32,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457754131] [2021-11-23 03:22:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:32,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:22:32,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:32,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:22:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:22:32,891 INFO L87 Difference]: Start difference. First operand has 172 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 102 states have internal predecessors, (132), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:33,106 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2021-11-23 03:22:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:22:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2021-11-23 03:22:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:33,134 INFO L225 Difference]: With dead ends: 252 [2021-11-23 03:22:33,134 INFO L226 Difference]: Without dead ends: 169 [2021-11-23 03:22:33,143 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:22:33,149 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:33,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:22:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-23 03:22:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-11-23 03:22:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 99 states have internal predecessors, (126), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 03:22:33,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 225 transitions. [2021-11-23 03:22:33,264 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 225 transitions. Word has length 60 [2021-11-23 03:22:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:33,270 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 225 transitions. [2021-11-23 03:22:33,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 225 transitions. [2021-11-23 03:22:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 03:22:33,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:33,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:22:33,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:22:33,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728976, now seen corresponding path program 1 times [2021-11-23 03:22:33,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:33,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016895152] [2021-11-23 03:22:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:33,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:33,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:33,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016895152] [2021-11-23 03:22:33,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016895152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:33,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:33,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:22:33,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581852929] [2021-11-23 03:22:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:33,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:33,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:33,479 INFO L87 Difference]: Start difference. First operand 169 states and 225 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:33,625 INFO L93 Difference]: Finished difference Result 248 states and 320 transitions. [2021-11-23 03:22:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:22:33,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 03:22:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:33,636 INFO L225 Difference]: With dead ends: 248 [2021-11-23 03:22:33,636 INFO L226 Difference]: Without dead ends: 171 [2021-11-23 03:22:33,647 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:22:33,649 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:33,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:22:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-23 03:22:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-11-23 03:22:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 99 states have (on average 1.292929292929293) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 21 states have call predecessors, (50), 21 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-23 03:22:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 227 transitions. [2021-11-23 03:22:33,723 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 227 transitions. Word has length 61 [2021-11-23 03:22:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:33,723 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 227 transitions. [2021-11-23 03:22:33,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 227 transitions. [2021-11-23 03:22:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 03:22:33,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:33,730 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:22:33,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:22:33,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash 595308532, now seen corresponding path program 1 times [2021-11-23 03:22:33,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:33,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415010752] [2021-11-23 03:22:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:33,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:33,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415010752] [2021-11-23 03:22:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415010752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:33,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:33,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:22:33,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931754393] [2021-11-23 03:22:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:33,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:33,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:22:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:33,823 INFO L87 Difference]: Start difference. First operand 171 states and 227 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:33,987 INFO L93 Difference]: Finished difference Result 377 states and 521 transitions. [2021-11-23 03:22:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:22:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-23 03:22:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:33,993 INFO L225 Difference]: With dead ends: 377 [2021-11-23 03:22:33,994 INFO L226 Difference]: Without dead ends: 224 [2021-11-23 03:22:33,995 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:22:34,004 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 59 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:34,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 394 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:22:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-23 03:22:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2021-11-23 03:22:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 133 states have (on average 1.3759398496240602) internal successors, (183), 135 states have internal predecessors, (183), 64 states have call successors, (64), 21 states have call predecessors, (64), 21 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 03:22:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 310 transitions. [2021-11-23 03:22:34,037 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 310 transitions. Word has length 66 [2021-11-23 03:22:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:34,038 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 310 transitions. [2021-11-23 03:22:34,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:22:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 310 transitions. [2021-11-23 03:22:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:22:34,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:34,041 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-23 03:22:34,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:22:34,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:22:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:34,043 INFO L85 PathProgramCache]: Analyzing trace with hash -53160458, now seen corresponding path program 1 times [2021-11-23 03:22:34,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:22:34,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816362028] [2021-11-23 03:22:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:34,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:34,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:22:34,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816362028] [2021-11-23 03:22:34,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816362028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:22:34,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668892190] [2021-11-23 03:22:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:34,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:22:34,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:22:34,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:22:34,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:22:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:22:34,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:22:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:34,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:22:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:22:34,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668892190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:22:34,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602779597] [2021-11-23 03:22:35,020 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 03:22:35,021 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:22:35,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:22:35,034 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:22:35,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:23:08,983 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:23:09,313 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:23:09,613 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2021-11-23 03:23:35,358 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2021-11-23 03:23:35,636 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2021-11-23 03:23:53,328 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2021-11-23 03:23:57,973 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2021-11-23 03:23:58,176 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2021-11-23 03:23:58,223 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 450 for LOIs [2021-11-23 03:23:58,770 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 456 for LOIs [2021-11-23 03:23:59,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:24:53,048 WARN L227 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 591 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:14,301 WARN L227 SmtUtils]: Spent 19.80s on a formula simplification. DAG size of input: 593 DAG size of output: 469 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:25:30,487 WARN L227 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 564 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:09,927 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 532 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:15,969 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 467 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:23,318 WARN L227 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 569 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:29,764 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 456 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:36,248 WARN L227 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 480 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:26:54,910 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 498 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:01,774 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 520 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:17,472 WARN L227 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 546 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:25,204 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 546 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:25,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1602779597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:27:25,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:27:25,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2021-11-23 03:27:25,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847699096] [2021-11-23 03:27:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:27:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 03:27:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:27:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 03:27:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2720, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 03:27:25,211 INFO L87 Difference]: Start difference. First operand 219 states and 310 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 03:27:37,390 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 580 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:46,148 WARN L227 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 591 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:54,808 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 589 DAG size of output: 440 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:03,696 WARN L227 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 590 DAG size of output: 444 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:16,583 WARN L227 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 595 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:28,023 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 556 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:45,209 INFO L93 Difference]: Finished difference Result 602 states and 918 transitions. [2021-11-23 03:28:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-23 03:28:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2021-11-23 03:28:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:45,216 INFO L225 Difference]: With dead ends: 602 [2021-11-23 03:28:45,216 INFO L226 Difference]: Without dead ends: 401 [2021-11-23 03:28:45,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 264.3s TimeCoverageRelationStatistics Valid=212, Invalid=3694, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 03:28:45,220 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 282 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 6319 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 6358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 6319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:45,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 4888 Invalid, 6358 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [39 Valid, 6319 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2021-11-23 03:28:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-23 03:28:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 291. [2021-11-23 03:28:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 189 states have internal predecessors, (253), 76 states have call successors, (76), 30 states have call predecessors, (76), 28 states have return successors, (76), 71 states have call predecessors, (76), 75 states have call successors, (76) [2021-11-23 03:28:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 405 transitions. [2021-11-23 03:28:45,399 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 405 transitions. Word has length 67 [2021-11-23 03:28:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:45,399 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 405 transitions. [2021-11-23 03:28:45,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 03:28:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 405 transitions. [2021-11-23 03:28:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:28:45,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:45,403 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:45,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:28:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:28:45,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash 915717312, now seen corresponding path program 1 times [2021-11-23 03:28:45,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520135697] [2021-11-23 03:28:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:45,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:45,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520135697] [2021-11-23 03:28:45,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520135697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:28:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118210507] [2021-11-23 03:28:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:45,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:28:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:28:45,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:28:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:28:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:28:46,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:28:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:28:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:46,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118210507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:28:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028646981] [2021-11-23 03:28:46,346 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 03:28:46,347 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:28:46,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:28:46,348 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:28:46,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:29:17,247 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:29:17,518 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:29:17,792 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2021-11-23 03:29:19,567 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2021-11-23 03:29:19,609 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2021-11-23 03:29:23,066 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2021-11-23 03:29:27,782 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 437 for LOIs [2021-11-23 03:29:27,998 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-23 03:29:28,043 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 479 for LOIs [2021-11-23 03:29:29,620 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 264 for LOIs [2021-11-23 03:29:29,692 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:29:46,168 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:25,726 WARN L227 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:46,345 WARN L227 SmtUtils]: Spent 19.17s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:59,762 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 572 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:09,738 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 479 DAG size of output: 271 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:49,142 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 522 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:06,159 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 548 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:10,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1028646981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:10,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:32:10,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2021-11-23 03:32:10,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525318740] [2021-11-23 03:32:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:10,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 03:32:10,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 03:32:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3136, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 03:32:10,570 INFO L87 Difference]: Start difference. First operand 291 states and 405 transitions. Second operand has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:32:25,449 WARN L227 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 572 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:49,269 WARN L227 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 591 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:09,876 INFO L93 Difference]: Finished difference Result 673 states and 998 transitions. [2021-11-23 03:33:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 03:33:09,877 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2021-11-23 03:33:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:09,882 INFO L225 Difference]: With dead ends: 673 [2021-11-23 03:33:09,882 INFO L226 Difference]: Without dead ends: 472 [2021-11-23 03:33:09,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 200.3s TimeCoverageRelationStatistics Valid=257, Invalid=4573, Unknown=0, NotChecked=0, Total=4830 [2021-11-23 03:33:09,886 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 359 mSDsluCounter, 6078 mSDsCounter, 0 mSdLazyCounter, 7451 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 6108 SdHoareTripleChecker+Invalid, 7508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 7451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:09,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 6108 Invalid, 7508 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [57 Valid, 7451 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2021-11-23 03:33:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-23 03:33:10,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 327. [2021-11-23 03:33:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 219 states have (on average 1.4063926940639269) internal successors, (308), 223 states have internal predecessors, (308), 78 states have call successors, (78), 31 states have call predecessors, (78), 29 states have return successors, (78), 72 states have call predecessors, (78), 77 states have call successors, (78) [2021-11-23 03:33:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 464 transitions. [2021-11-23 03:33:10,052 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 464 transitions. Word has length 73 [2021-11-23 03:33:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:10,053 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 464 transitions. [2021-11-23 03:33:10,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 16 states have call successors, (16), 10 states have call predecessors, (16), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:33:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 464 transitions. [2021-11-23 03:33:10,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 03:33:10,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:10,059 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:10,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:33:10,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:33:10,263 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1541262420, now seen corresponding path program 1 times [2021-11-23 03:33:10,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159400055] [2021-11-23 03:33:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:10,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:33:10,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159400055] [2021-11-23 03:33:10,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159400055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:33:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223175471] [2021-11-23 03:33:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:10,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:33:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:33:10,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:33:10,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ceaa0b5-e499-4e47-bf1d-54b42d112e70/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:33:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:10,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:33:10,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:33:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:33:10,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:33:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:33:11,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223175471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:33:11,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653008194] [2021-11-23 03:33:11,063 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 03:33:11,063 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:33:11,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:33:11,065 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:33:11,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:33:47,488 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:33:47,739 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 03:33:47,806 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 03:33:47,875 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 447 for LOIs [2021-11-23 03:33:47,998 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:33:48,250 INFO L180 IcfgInterpreter]: Interpretation finished