./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product17.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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/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 cc6bd9a8e81eed69bb1e052a3e58ea0f1400924f4533cb09f3cdffebd7dfcd4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:47:08,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:47:08,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:47:08,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:47:08,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:47:08,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:47:08,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:47:08,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:47:08,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:47:08,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:47:08,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:47:08,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:47:08,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:47:08,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:47:08,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:47:08,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:47:08,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:47:08,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:47:08,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:47:08,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:47:08,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:47:08,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:47:08,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:47:08,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:47:08,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:47:08,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:47:08,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:47:08,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:47:08,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:47:08,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:47:08,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:47:08,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:47:08,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:47:08,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:47:08,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:47:08,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:47:08,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:47:08,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:47:08,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:47:08,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:47:08,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:47:08,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:47:08,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:47:08,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:47:08,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:47:08,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:47:08,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:47:08,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:47:08,248 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:47:08,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:47:08,248 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:47:08,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:47:08,249 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:47:08,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:47:08,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:47:08,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:47:08,249 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:47:08,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:47:08,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:47:08,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:47:08,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:47:08,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:47:08,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:47:08,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:47:08,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:47:08,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:47:08,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:47:08,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:47:08,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:47:08,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:47:08,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:47:08,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:47:08,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:47:08,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:47:08,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:47:08,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:47:08,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:47:08,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:47:08,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:47:08,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:47:08,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:47:08,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:47:08,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:47:08,256 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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6bd9a8e81eed69bb1e052a3e58ea0f1400924f4533cb09f3cdffebd7dfcd4d [2021-11-23 02:47:08,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:47:08,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:47:08,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:47:08,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:47:08,518 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:47:08,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec7_product17.cil.c [2021-11-23 02:47:08,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/data/2593cfce2/37f8f0116913411d98390bd19ecaef0b/FLAG4ad3e2fe6 [2021-11-23 02:47:09,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:47:09,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c [2021-11-23 02:47:09,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/data/2593cfce2/37f8f0116913411d98390bd19ecaef0b/FLAG4ad3e2fe6 [2021-11-23 02:47:09,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/data/2593cfce2/37f8f0116913411d98390bd19ecaef0b [2021-11-23 02:47:09,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:47:09,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:47:09,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:47:09,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:47:09,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:47:09,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:09" (1/1) ... [2021-11-23 02:47:09,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd89c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:09, skipping insertion in model container [2021-11-23 02:47:09,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:47:09" (1/1) ... [2021-11-23 02:47:09,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:47:09,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:47:10,164 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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c[48205,48218] [2021-11-23 02:47:10,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:47:10,333 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:47:10,432 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_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/sv-benchmarks/c/product-lines/email_spec7_product17.cil.c[48205,48218] [2021-11-23 02:47:10,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:47:10,520 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:47:10,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10 WrapperNode [2021-11-23 02:47:10,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:47:10,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:47:10,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:47:10,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:47:10,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,658 INFO L137 Inliner]: procedures = 127, calls = 205, calls flagged for inlining = 54, calls inlined = 47, statements flattened = 914 [2021-11-23 02:47:10,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:47:10,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:47:10,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:47:10,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:47:10,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:47:10,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:47:10,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:47:10,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:47:10,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (1/1) ... [2021-11-23 02:47:10,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:47:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:47:10,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:47:10,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:47:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:47:10,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:47:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:47:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:47:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2021-11-23 02:47:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2021-11-23 02:47:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:47:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:47:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:47:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:47:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:47:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:47:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:47:10,974 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:47:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:47:10,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:47:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:47:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:47:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:47:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:47:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:47:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:47:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:47:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:47:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:47:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:47:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:47:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:47:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:47:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:47:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:47:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:47:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:47:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:47:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:47:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:47:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:47:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:47:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:47:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:47:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:47:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:47:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:47:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:47:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:47:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:47:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:47:11,218 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:47:11,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:47:11,934 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:47:12,405 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:47:12,406 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:47:12,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:12 BoogieIcfgContainer [2021-11-23 02:47:12,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:47:12,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:47:12,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:47:12,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:47:12,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:47:09" (1/3) ... [2021-11-23 02:47:12,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:12, skipping insertion in model container [2021-11-23 02:47:12,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:47:10" (2/3) ... [2021-11-23 02:47:12,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:47:12, skipping insertion in model container [2021-11-23 02:47:12,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:47:12" (3/3) ... [2021-11-23 02:47:12,422 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product17.cil.c [2021-11-23 02:47:12,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:47:12,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:47:12,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:47:12,501 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 02:47:12,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:47:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 02:47:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 02:47:12,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:12,552 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 02:47:12,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash -239688259, now seen corresponding path program 1 times [2021-11-23 02:47:12,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707807566] [2021-11-23 02:47:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:12,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:12,938 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 02:47:12,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:12,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707807566] [2021-11-23 02:47:12,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707807566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:12,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:12,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:47:12,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583298412] [2021-11-23 02:47:12,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:12,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:47:12,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:47:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:47:12,982 INFO L87 Difference]: Start difference. First operand has 166 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) 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 02:47:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:13,124 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2021-11-23 02:47:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:47:13,127 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 02:47:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:13,143 INFO L225 Difference]: With dead ends: 240 [2021-11-23 02:47:13,143 INFO L226 Difference]: Without dead ends: 163 [2021-11-23 02:47:13,150 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 02:47:13,156 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:13,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:47:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-23 02:47:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-23 02:47:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 95 states have internal predecessors, (121), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-23 02:47:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 216 transitions. [2021-11-23 02:47:13,250 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 216 transitions. Word has length 60 [2021-11-23 02:47:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:13,255 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 216 transitions. [2021-11-23 02:47:13,255 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 02:47:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 216 transitions. [2021-11-23 02:47:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:47:13,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:13,265 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 02:47:13,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:47:13,267 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2000585565, now seen corresponding path program 1 times [2021-11-23 02:47:13,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:13,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056978277] [2021-11-23 02:47:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:13,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:13,501 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 02:47:13,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:13,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056978277] [2021-11-23 02:47:13,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056978277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:13,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:13,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:47:13,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364904439] [2021-11-23 02:47:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:13,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:47:13,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:47:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:47:13,508 INFO L87 Difference]: Start difference. First operand 163 states and 216 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 02:47:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:13,668 INFO L93 Difference]: Finished difference Result 236 states and 302 transitions. [2021-11-23 02:47:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:47:13,670 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 02:47:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:13,676 INFO L225 Difference]: With dead ends: 236 [2021-11-23 02:47:13,676 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 02:47:13,684 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 02:47:13,686 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:13,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:47:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 02:47:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-23 02:47:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 95 states have (on average 1.2947368421052632) internal successors, (123), 97 states have internal predecessors, (123), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-23 02:47:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2021-11-23 02:47:13,721 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 61 [2021-11-23 02:47:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:13,723 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2021-11-23 02:47:13,723 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 02:47:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2021-11-23 02:47:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:47:13,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:13,731 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 02:47:13,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:47:13,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash -189394315, now seen corresponding path program 1 times [2021-11-23 02:47:13,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639660777] [2021-11-23 02:47:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:13,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:13,886 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 02:47:13,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:13,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639660777] [2021-11-23 02:47:13,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639660777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:13,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:13,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:47:13,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502855677] [2021-11-23 02:47:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:13,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:47:13,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:47:13,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:47:13,890 INFO L87 Difference]: Start difference. First operand 165 states and 218 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 02:47:14,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:14,029 INFO L93 Difference]: Finished difference Result 365 states and 503 transitions. [2021-11-23 02:47:14,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:47:14,030 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 02:47:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:14,035 INFO L225 Difference]: With dead ends: 365 [2021-11-23 02:47:14,035 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 02:47:14,037 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 02:47:14,045 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 59 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:14,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 387 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:47:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 02:47:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2021-11-23 02:47:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 129 states have (on average 1.37984496124031) internal successors, (178), 131 states have internal predecessors, (178), 62 states have call successors, (62), 21 states have call predecessors, (62), 21 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 02:47:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 301 transitions. [2021-11-23 02:47:14,089 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 301 transitions. Word has length 66 [2021-11-23 02:47:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:14,091 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 301 transitions. [2021-11-23 02:47:14,092 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 02:47:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 301 transitions. [2021-11-23 02:47:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:47:14,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:14,097 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 02:47:14,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:47:14,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:47:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 387197810, now seen corresponding path program 1 times [2021-11-23 02:47:14,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:14,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444050956] [2021-11-23 02:47:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:14,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:14,194 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 02:47:14,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:14,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444050956] [2021-11-23 02:47:14,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444050956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:47:14,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202760386] [2021-11-23 02:47:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:14,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:47:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:47:14,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:47:14,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:47:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:47:14,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:47:14,720 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 02:47:14,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:47:14,868 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 02:47:14,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202760386] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:47:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1397067091] [2021-11-23 02:47:14,891 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 02:47:14,891 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:47:14,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:47:14,901 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:47:14,902 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:47:40,064 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:47:40,405 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:47:40,661 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:48:30,772 WARN L227 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 583 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:39,285 WARN L227 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 570 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:46,576 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 570 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:53,905 WARN L227 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 568 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:59,555 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 566 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:59,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1397067091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:48:59,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:48:59,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:48:59,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705060802] [2021-11-23 02:48:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:48:59,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:48:59,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:48:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:48:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:48:59,564 INFO L87 Difference]: Start difference. First operand 213 states and 301 transitions. Second operand has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:49:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:05,770 INFO L93 Difference]: Finished difference Result 508 states and 769 transitions. [2021-11-23 02:49:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:49:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2021-11-23 02:49:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:05,775 INFO L225 Difference]: With dead ends: 508 [2021-11-23 02:49:05,775 INFO L226 Difference]: Without dead ends: 313 [2021-11-23 02:49:05,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 78.9s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:49:05,778 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 203 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:05,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 2598 Invalid, 1706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:49:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-23 02:49:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 236. [2021-11-23 02:49:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 151 states have (on average 1.3973509933774835) internal successors, (211), 153 states have internal predecessors, (211), 62 states have call successors, (62), 22 states have call predecessors, (62), 22 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 02:49:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 334 transitions. [2021-11-23 02:49:05,875 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 334 transitions. Word has length 67 [2021-11-23 02:49:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 334 transitions. [2021-11-23 02:49:05,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:49:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 334 transitions. [2021-11-23 02:49:05,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:49:05,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:05,882 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] [2021-11-23 02:49:05,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:49:06,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:06,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2111884237, now seen corresponding path program 1 times [2021-11-23 02:49:06,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309966290] [2021-11-23 02:49:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:06,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:49:06,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:06,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309966290] [2021-11-23 02:49:06,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309966290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:49:06,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:49:06,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:49:06,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550475133] [2021-11-23 02:49:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:49:06,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:49:06,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:49:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:49:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:49:06,193 INFO L87 Difference]: Start difference. First operand 236 states and 334 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-23 02:49:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:49:06,406 INFO L93 Difference]: Finished difference Result 575 states and 848 transitions. [2021-11-23 02:49:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:49:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 72 [2021-11-23 02:49:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:49:06,411 INFO L225 Difference]: With dead ends: 575 [2021-11-23 02:49:06,411 INFO L226 Difference]: Without dead ends: 363 [2021-11-23 02:49:06,412 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 02:49:06,413 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 57 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:49:06,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 393 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:49:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-23 02:49:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 358. [2021-11-23 02:49:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 242 states have (on average 1.4504132231404958) internal successors, (351), 244 states have internal predecessors, (351), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-23 02:49:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 536 transitions. [2021-11-23 02:49:06,546 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 536 transitions. Word has length 72 [2021-11-23 02:49:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:49:06,547 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 536 transitions. [2021-11-23 02:49:06,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-23 02:49:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 536 transitions. [2021-11-23 02:49:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:49:06,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:49:06,550 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 02:49:06,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:49:06,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:49:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:49:06,551 INFO L85 PathProgramCache]: Analyzing trace with hash -333924249, now seen corresponding path program 1 times [2021-11-23 02:49:06,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:49:06,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088572318] [2021-11-23 02:49:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:06,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:49:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:06,639 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 02:49:06,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:49:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088572318] [2021-11-23 02:49:06,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088572318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:49:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206109073] [2021-11-23 02:49:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:49:06,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:49:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:49:06,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:49:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:49:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:49:06,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:49:06,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:49:07,069 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 02:49:07,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:49:07,232 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 02:49:07,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206109073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:49:07,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1173010658] [2021-11-23 02:49:07,236 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:49:07,236 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:49:07,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:49:07,237 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:49:07,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:49:36,724 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:49:36,987 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:49:37,245 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2021-11-23 02:49:38,811 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2021-11-23 02:49:38,870 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2021-11-23 02:49:42,246 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 237 for LOIs [2021-11-23 02:49:42,296 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 250 for LOIs [2021-11-23 02:49:46,814 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 441 for LOIs [2021-11-23 02:49:47,034 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2021-11-23 02:49:47,077 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:49:48,626 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:50:56,692 WARN L227 SmtUtils]: Spent 19.63s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:51:16,447 WARN L227 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 480 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:06,594 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 447 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:12,645 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 540 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:52:18,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1173010658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:52:18,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:52:18,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2021-11-23 02:52:18,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533850717] [2021-11-23 02:52:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:52:18,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:52:18,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:52:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:52:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=3128, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:52:18,293 INFO L87 Difference]: Start difference. First operand 358 states and 536 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 02:52:38,033 WARN L227 SmtUtils]: Spent 17.50s on a formula simplification. DAG size of input: 564 DAG size of output: 437 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:04,014 WARN L227 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 584 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:53:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:53:20,459 INFO L93 Difference]: Finished difference Result 861 states and 1343 transitions. [2021-11-23 02:53:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-23 02:53:20,460 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 02:53:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:53:20,465 INFO L225 Difference]: With dead ends: 861 [2021-11-23 02:53:20,466 INFO L226 Difference]: Without dead ends: 566 [2021-11-23 02:53:20,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 195.3s TimeCoverageRelationStatistics Valid=269, Invalid=4423, Unknown=0, NotChecked=0, Total=4692 [2021-11-23 02:53:20,470 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 300 mSDsluCounter, 4393 mSDsCounter, 0 mSdLazyCounter, 5864 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 5915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 5864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:53:20,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 4500 Invalid, 5915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 5864 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2021-11-23 02:53:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-23 02:53:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 450. [2021-11-23 02:53:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 312 states have (on average 1.4615384615384615) internal successors, (456), 317 states have internal predecessors, (456), 108 states have call successors, (108), 31 states have call predecessors, (108), 29 states have return successors, (108), 101 states have call predecessors, (108), 107 states have call successors, (108) [2021-11-23 02:53:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 672 transitions. [2021-11-23 02:53:20,648 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 672 transitions. Word has length 73 [2021-11-23 02:53:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:53:20,649 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 672 transitions. [2021-11-23 02:53:20,649 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 02:53:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 672 transitions. [2021-11-23 02:53:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:53:20,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:53:20,656 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 02:53:20,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:53:20,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:53:20,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:53:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:53:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1218619163, now seen corresponding path program 1 times [2021-11-23 02:53:20,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:53:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741854681] [2021-11-23 02:53:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:20,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:53:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:20,972 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 02:53:20,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:53:20,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741854681] [2021-11-23 02:53:20,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741854681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:53:20,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749618783] [2021-11-23 02:53:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:53:20,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:53:20,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:53:20,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:53:20,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:53:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:53:21,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:53:21,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:53:21,385 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 02:53:21,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:53:21,519 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 02:53:21,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749618783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:53:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370489241] [2021-11-23 02:53:21,528 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 02:53:21,529 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:53:21,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:53:21,530 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:53:21,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:54:24,259 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:54:24,562 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2021-11-23 02:54:24,853 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2021-11-23 02:54:25,145 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2021-11-23 02:54:26,598 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2021-11-23 02:54:26,667 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 216 for LOIs [2021-11-23 02:54:26,707 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:54:26,980 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 232 for LOIs [2021-11-23 02:54:29,883 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 244 for LOIs [2021-11-23 02:54:29,949 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 233 for LOIs [2021-11-23 02:54:32,564 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 226 for LOIs [2021-11-23 02:54:32,601 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2021-11-23 02:54:32,645 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2021-11-23 02:54:34,041 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:55:35,275 WARN L227 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 529 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:06,786 WARN L227 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 527 DAG size of output: 304 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:56:22,538 WARN L227 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 431 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:57:06,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1370489241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:57:06,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:57:06,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2021-11-23 02:57:06,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582848507] [2021-11-23 02:57:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:57:06,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-23 02:57:06,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:57:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-23 02:57:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3730, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 02:57:06,884 INFO L87 Difference]: Start difference. First operand 450 states and 672 transitions. Second operand has 58 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:57:24,825 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 336 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:57:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:57:59,688 INFO L93 Difference]: Finished difference Result 946 states and 1463 transitions. [2021-11-23 02:57:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-23 02:57:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 76 [2021-11-23 02:57:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:57:59,695 INFO L225 Difference]: With dead ends: 946 [2021-11-23 02:57:59,695 INFO L226 Difference]: Without dead ends: 651 [2021-11-23 02:57:59,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 180.2s TimeCoverageRelationStatistics Valid=265, Invalid=5137, Unknown=0, NotChecked=0, Total=5402 [2021-11-23 02:57:59,700 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 272 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 8908 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 6108 SdHoareTripleChecker+Invalid, 8960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 8908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:57:59,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 6108 Invalid, 8960 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 8908 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2021-11-23 02:57:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-11-23 02:57:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 526. [2021-11-23 02:57:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 387 states have internal predecessors, (566), 113 states have call successors, (113), 34 states have call predecessors, (113), 32 states have return successors, (113), 104 states have call predecessors, (113), 112 states have call successors, (113) [2021-11-23 02:57:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 792 transitions. [2021-11-23 02:57:59,954 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 792 transitions. Word has length 76 [2021-11-23 02:57:59,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:57:59,955 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 792 transitions. [2021-11-23 02:57:59,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 13 states have call predecessors, (18), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:57:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 792 transitions. [2021-11-23 02:57:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:57:59,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:57:59,960 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:57:59,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 02:58:00,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6ef2fdc-50c5-44cc-8f92-5a9b16a46a7c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:58:00,179 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:58:00,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:58:00,179 INFO L85 PathProgramCache]: Analyzing trace with hash 525997470, now seen corresponding path program 1 times [2021-11-23 02:58:00,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:58:00,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366120092] [2021-11-23 02:58:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:58:00,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:58:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:58:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 02:58:00,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:58:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366120092] [2021-11-23 02:58:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366120092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:58:00,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:58:00,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:58:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426538704] [2021-11-23 02:58:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:58:00,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:58:00,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:58:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:58:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:58:00,373 INFO L87 Difference]: Start difference. First operand 526 states and 792 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-23 02:58:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:58:00,843 INFO L93 Difference]: Finished difference Result 526 states and 792 transitions. [2021-11-23 02:58:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:58:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 78 [2021-11-23 02:58:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:58:00,848 INFO L225 Difference]: With dead ends: 526 [2021-11-23 02:58:00,848 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:58:00,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:58:00,851 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 83 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:58:00,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 797 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:58:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:58:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:58:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:58:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:58:00,853 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-11-23 02:58:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:58:00,854 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:58:00,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-23 02:58:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:58:00,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:58:00,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:58:00,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:58:00,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:58:56,483 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 552 DAG size of output: 462 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)