./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product20.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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/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 e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:11:46,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:11:46,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:11:46,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:11:46,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:11:46,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:11:46,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:11:46,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:11:46,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:11:46,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:11:46,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:11:46,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:11:46,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:11:46,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:11:46,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:11:46,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:11:46,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:11:46,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:11:46,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:11:46,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:11:46,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:11:46,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:11:46,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:11:46,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:11:46,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:11:46,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:11:46,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:11:46,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:11:46,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:11:46,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:11:46,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:11:46,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:11:46,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:11:46,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:11:46,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:11:46,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:11:46,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:11:46,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:11:46,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:11:46,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:11:46,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:11:46,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:11:46,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:11:46,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:11:46,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:11:46,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:11:46,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:11:46,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:11:46,211 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:11:46,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:11:46,211 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:11:46,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:11:46,212 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:11:46,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:11:46,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:11:46,213 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:11:46,213 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:11:46,213 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:11:46,214 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:11:46,214 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:11:46,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:11:46,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:11:46,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:11:46,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:11:46,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:11:46,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:11:46,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:11:46,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:11:46,218 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:11:46,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:11:46,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:11:46,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:11:46,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:11:46,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:11:46,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:46,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:11:46,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:11:46,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:11:46,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:11:46,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:11:46,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:11:46,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:11:46,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:11:46,223 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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e95c13964d33a58c84e6632b6635f09155542b4e87cc9520cc45bb7c6f5f1d [2021-11-23 02:11:46,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:11:46,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:11:46,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:11:46,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:11:46,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:11:46,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2021-11-23 02:11:46,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/data/6422def20/1b962fe8fce74d2bb8549fa3117689fd/FLAG3d5f92028 [2021-11-23 02:11:47,457 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:11:47,457 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c [2021-11-23 02:11:47,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/data/6422def20/1b962fe8fce74d2bb8549fa3117689fd/FLAG3d5f92028 [2021-11-23 02:11:47,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/data/6422def20/1b962fe8fce74d2bb8549fa3117689fd [2021-11-23 02:11:47,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:11:47,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:11:47,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:47,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:11:47,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:11:47,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:47" (1/1) ... [2021-11-23 02:11:47,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb40336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:47, skipping insertion in model container [2021-11-23 02:11:47,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:11:47" (1/1) ... [2021-11-23 02:11:47,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:11:47,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:11:48,144 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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2021-11-23 02:11:48,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:48,424 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:11:48,513 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_9ca231c9-4840-44ab-ad4d-65e72ac3d913/sv-benchmarks/c/product-lines/email_spec1_product20.cil.c[17698,17711] [2021-11-23 02:11:48,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:11:48,660 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:11:48,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48 WrapperNode [2021-11-23 02:11:48,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:11:48,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:48,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:11:48,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:11:48,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,800 INFO L137 Inliner]: procedures = 128, calls = 215, calls flagged for inlining = 55, calls inlined = 48, statements flattened = 953 [2021-11-23 02:11:48,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:11:48,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:11:48,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:11:48,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:11:48,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:11:48,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:11:48,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:11:48,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:11:48,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (1/1) ... [2021-11-23 02:11:48,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:11:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:48,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:11:49,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:11:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:11:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:11:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:11:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:11:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:11:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:11:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:11:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:11:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:11:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:11:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:11:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:11:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:11:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:11:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:11:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:11:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:11:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:11:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:11:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:11:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:11:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:11:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:11:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:11:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:11:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:11:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:11:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:11:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:11:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:11:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:11:49,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:11:49,055 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:11:49,055 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:11:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:11:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:11:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:11:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:11:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:11:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:11:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:11:49,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:11:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:11:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:11:49,058 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:11:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:11:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:11:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:11:49,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:11:49,381 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:11:49,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:11:50,389 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:11:50,940 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:11:50,941 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:11:50,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:50 BoogieIcfgContainer [2021-11-23 02:11:50,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:11:50,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:11:50,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:11:50,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:11:50,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:11:47" (1/3) ... [2021-11-23 02:11:50,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2420b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:50, skipping insertion in model container [2021-11-23 02:11:50,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:11:48" (2/3) ... [2021-11-23 02:11:50,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2420b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:11:50, skipping insertion in model container [2021-11-23 02:11:50,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:11:50" (3/3) ... [2021-11-23 02:11:50,958 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product20.cil.c [2021-11-23 02:11:50,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:11:50,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:11:51,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:11:51,071 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 02:11:51,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:11:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-23 02:11:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 02:11:51,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:51,147 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, 1, 1] [2021-11-23 02:11:51,148 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash -933797065, now seen corresponding path program 1 times [2021-11-23 02:11:51,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:51,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115990070] [2021-11-23 02:11:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:51,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:51,655 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 02:11:51,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:51,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115990070] [2021-11-23 02:11:51,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115990070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:51,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:51,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:11:51,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880329151] [2021-11-23 02:11:51,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:11:51,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:11:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:11:51,756 INFO L87 Difference]: Start difference. First operand has 181 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 02:11:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:51,933 INFO L93 Difference]: Finished difference Result 270 states and 363 transitions. [2021-11-23 02:11:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:11:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 63 [2021-11-23 02:11:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:51,957 INFO L225 Difference]: With dead ends: 270 [2021-11-23 02:11:51,958 INFO L226 Difference]: Without dead ends: 178 [2021-11-23 02:11:51,973 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 02:11:51,979 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:51,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:11:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-23 02:11:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-11-23 02:11:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 101 states have (on average 1.306930693069307) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 02:11:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 239 transitions. [2021-11-23 02:11:52,062 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 239 transitions. Word has length 63 [2021-11-23 02:11:52,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:52,064 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 239 transitions. [2021-11-23 02:11:52,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 02:11:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 239 transitions. [2021-11-23 02:11:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:11:52,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:52,071 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, 1, 1, 1] [2021-11-23 02:11:52,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:11:52,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:52,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1109775274, now seen corresponding path program 1 times [2021-11-23 02:11:52,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086686604] [2021-11-23 02:11:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:52,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:52,296 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 02:11:52,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:52,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086686604] [2021-11-23 02:11:52,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086686604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:52,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:52,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:11:52,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608240107] [2021-11-23 02:11:52,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:52,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:52,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:52,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:52,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:52,304 INFO L87 Difference]: Start difference. First operand 178 states and 239 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:11:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:52,520 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2021-11-23 02:11:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:52,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 64 [2021-11-23 02:11:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:52,530 INFO L225 Difference]: With dead ends: 266 [2021-11-23 02:11:52,532 INFO L226 Difference]: Without dead ends: 180 [2021-11-23 02:11:52,534 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 02:11:52,537 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:52,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:11:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-23 02:11:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-23 02:11:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 107 states have internal predecessors, (134), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 02:11:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 241 transitions. [2021-11-23 02:11:52,596 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 241 transitions. Word has length 64 [2021-11-23 02:11:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:52,598 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 241 transitions. [2021-11-23 02:11:52,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 02:11:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 241 transitions. [2021-11-23 02:11:52,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:11:52,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:52,616 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] [2021-11-23 02:11:52,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:11:52,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -110976212, now seen corresponding path program 1 times [2021-11-23 02:11:52,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:52,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720882841] [2021-11-23 02:11:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:52,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:52,795 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 02:11:52,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:52,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720882841] [2021-11-23 02:11:52,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720882841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:52,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:52,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:11:52,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272899881] [2021-11-23 02:11:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:52,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:52,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:52,800 INFO L87 Difference]: Start difference. First operand 180 states and 241 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, (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 02:11:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:52,994 INFO L93 Difference]: Finished difference Result 395 states and 549 transitions. [2021-11-23 02:11:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:52,995 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, (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 69 [2021-11-23 02:11:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:53,003 INFO L225 Difference]: With dead ends: 395 [2021-11-23 02:11:53,004 INFO L226 Difference]: Without dead ends: 233 [2021-11-23 02:11:53,005 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 02:11:53,014 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 59 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:53,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 431 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:11:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-23 02:11:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2021-11-23 02:11:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 141 states have internal predecessors, (189), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 02:11:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 324 transitions. [2021-11-23 02:11:53,073 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 324 transitions. Word has length 69 [2021-11-23 02:11:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:53,075 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 324 transitions. [2021-11-23 02:11:53,076 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, (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 02:11:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 324 transitions. [2021-11-23 02:11:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:11:53,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:53,082 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] [2021-11-23 02:11:53,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:11:53,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2146308305, now seen corresponding path program 1 times [2021-11-23 02:11:53,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084783520] [2021-11-23 02:11:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:53,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:53,249 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 02:11:53,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:53,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084783520] [2021-11-23 02:11:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084783520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:11:53,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694752529] [2021-11-23 02:11:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:53,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:53,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:53,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:11:53,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:11:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:53,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:11:53,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:53,866 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 02:11:53,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:54,072 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 02:11:54,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694752529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:54,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [101589834] [2021-11-23 02:11:54,104 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-23 02:11:54,105 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:11:54,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:11:54,118 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:11:54,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:12:28,874 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:12:29,190 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:12:29,482 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:12:41,032 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:46,464 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:13:43,326 WARN L227 SmtUtils]: Spent 23.35s on a formula simplification. DAG size of input: 597 DAG size of output: 467 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:01,983 WARN L227 SmtUtils]: Spent 16.88s on a formula simplification. DAG size of input: 599 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:07,731 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 569 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:14,304 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 567 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:19,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [101589834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:19,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:14:19,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:14:19,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388123014] [2021-11-23 02:14:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:19,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:14:19,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:14:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:14:19,568 INFO L87 Difference]: Start difference. First operand 228 states and 324 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 02:14:29,837 WARN L227 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 576 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:43,246 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 423 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:14:54,129 WARN L227 SmtUtils]: Spent 10.48s on a formula simplification. DAG size of input: 554 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:01,273 WARN L227 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 422 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:15:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:07,730 INFO L93 Difference]: Finished difference Result 542 states and 822 transitions. [2021-11-23 02:15:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 02:15:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 70 [2021-11-23 02:15:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:07,735 INFO L225 Difference]: With dead ends: 542 [2021-11-23 02:15:07,736 INFO L226 Difference]: Without dead ends: 332 [2021-11-23 02:15:07,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 150.1s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:15:07,739 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 208 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:07,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 2968 Invalid, 1984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 02:15:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-23 02:15:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 256. [2021-11-23 02:15:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 164 states have (on average 1.3902439024390243) internal successors, (228), 168 states have internal predecessors, (228), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 02:15:07,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 363 transitions. [2021-11-23 02:15:07,846 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 363 transitions. Word has length 70 [2021-11-23 02:15:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:07,847 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 363 transitions. [2021-11-23 02:15:07,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 02:15:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 363 transitions. [2021-11-23 02:15:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:15:07,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:07,851 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, 1, 1, 1] [2021-11-23 02:15:07,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:15:08,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 02:15:08,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:15:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1353834432, now seen corresponding path program 1 times [2021-11-23 02:15:08,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:08,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493244147] [2021-11-23 02:15:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:08,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:08,198 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 02:15:08,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493244147] [2021-11-23 02:15:08,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493244147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:15:08,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919999105] [2021-11-23 02:15:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:08,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:15:08,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:15:08,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:15:08,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:15:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:08,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:15:08,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:15:08,643 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 02:15:08,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:15:08,850 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 02:15:08,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919999105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:15:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [63181317] [2021-11-23 02:15:08,856 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 02:15:08,856 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:15:08,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:15:08,858 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:15:08,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:15:49,863 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:15:50,191 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:15:50,503 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 257 for LOIs [2021-11-23 02:15:52,713 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 02:15:52,791 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2021-11-23 02:15:53,833 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 266 for LOIs [2021-11-23 02:16:03,843 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2021-11-23 02:16:03,897 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2021-11-23 02:16:04,568 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2021-11-23 02:16:04,621 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:17:08,775 WARN L227 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 587 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:34,261 WARN L227 SmtUtils]: Spent 23.75s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:42,248 WARN L227 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 568 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:57,608 WARN L227 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 572 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:49,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [63181317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:49,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:18:49,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [4, 4, 4] total 55 [2021-11-23 02:18:49,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426290710] [2021-11-23 02:18:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-23 02:18:49,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-23 02:18:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2827, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 02:18:49,927 INFO L87 Difference]: Start difference. First operand 256 states and 363 transitions. Second operand has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 16 states have call successors, (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 02:19:15,487 WARN L227 SmtUtils]: Spent 19.47s on a formula simplification. DAG size of input: 569 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:54,460 WARN L227 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 592 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:20:28,910 INFO L93 Difference]: Finished difference Result 628 states and 944 transitions. [2021-11-23 02:20:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-23 02:20:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 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 76 [2021-11-23 02:20:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:20:28,917 INFO L225 Difference]: With dead ends: 628 [2021-11-23 02:20:28,917 INFO L226 Difference]: Without dead ends: 418 [2021-11-23 02:20:28,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 242.8s TimeCoverageRelationStatistics Valid=319, Invalid=5381, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 02:20:28,922 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 310 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 6730 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 6785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 6730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:20:28,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 5620 Invalid, 6785 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [55 Valid, 6730 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2021-11-23 02:20:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-23 02:20:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 320. [2021-11-23 02:20:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 213 states have (on average 1.403755868544601) internal successors, (299), 218 states have internal predecessors, (299), 78 states have call successors, (78), 31 states have call predecessors, (78), 28 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-23 02:20:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 454 transitions. [2021-11-23 02:20:29,105 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 454 transitions. Word has length 76 [2021-11-23 02:20:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:20:29,106 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 454 transitions. [2021-11-23 02:20:29,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 31 states have internal predecessors, (40), 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 02:20:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 454 transitions. [2021-11-23 02:20:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:20:29,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:20:29,110 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, 1, 1, 1] [2021-11-23 02:20:29,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:20:29,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:29,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:20:29,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:20:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash -369417964, now seen corresponding path program 1 times [2021-11-23 02:20:29,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:20:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913422979] [2021-11-23 02:20:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:29,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:20:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:29,492 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 02:20:29,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:20:29,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913422979] [2021-11-23 02:20:29,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913422979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:20:29,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884783851] [2021-11-23 02:20:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:20:29,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:20:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:20:29,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:20:29,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ca231c9-4840-44ab-ad4d-65e72ac3d913/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:20:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:20:29,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:20:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:20:30,002 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 02:20:30,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:20:30,173 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 02:20:30,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884783851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:30,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749026346] [2021-11-23 02:20:30,181 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 02:20:30,182 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:20:30,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:20:30,185 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:20:30,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:30,183 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:21:30,446 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2021-11-23 02:21:30,521 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 456 for LOIs [2021-11-23 02:21:30,855 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2021-11-23 02:21:31,195 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 02:21:31,474 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:22:37,657 WARN L227 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:50,180 WARN L227 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 638 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:23:13,762 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 564 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)