./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product32.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_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/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_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/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_4380483e-c922-49c1-a937-b6a6b053c670/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 67a5f870249755b02192cafa5b1141561e5c0ebfbfae7faed4cfc72be0ad5c3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:28:38,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:28:38,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:28:38,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:28:38,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:28:38,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:28:38,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:28:38,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:28:38,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:28:38,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:28:38,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:28:38,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:28:38,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:28:38,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:28:38,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:28:38,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:28:38,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:28:38,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:28:38,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:28:38,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:28:38,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:28:38,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:28:38,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:28:38,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:28:38,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:28:38,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:28:38,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:28:38,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:28:38,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:28:38,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:28:38,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:28:38,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:28:38,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:28:38,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:28:38,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:28:38,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:28:38,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:28:38,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:28:38,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:28:38,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:28:38,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:28:38,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:28:38,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:28:38,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:28:38,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:28:38,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:28:38,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:28:38,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:28:38,293 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:28:38,294 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:28:38,294 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:28:38,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:28:38,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:28:38,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:28:38,299 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:28:38,300 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:28:38,300 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:28:38,300 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:28:38,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:28:38,301 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:28:38,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:28:38,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:28:38,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:28:38,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:28:38,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:28:38,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:28:38,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:28:38,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:28:38,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:28:38,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:28:38,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:28:38,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:28:38,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:28:38,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:28:38,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:28:38,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:28:38,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:28:38,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:28:38,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:28:38,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:28:38,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:28:38,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:28:38,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:28:38,311 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_4380483e-c922-49c1-a937-b6a6b053c670/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67a5f870249755b02192cafa5b1141561e5c0ebfbfae7faed4cfc72be0ad5c3d [2021-11-23 03:28:38,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:28:38,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:28:38,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:28:38,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:28:38,716 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:28:38,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec6_product32.cil.c [2021-11-23 03:28:38,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/data/0ca9af1e8/f27d549fa16248bc97b9c0fad0e6a511/FLAGd569c71cf [2021-11-23 03:28:39,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:28:39,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/sv-benchmarks/c/product-lines/email_spec6_product32.cil.c [2021-11-23 03:28:39,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/data/0ca9af1e8/f27d549fa16248bc97b9c0fad0e6a511/FLAGd569c71cf [2021-11-23 03:28:39,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/data/0ca9af1e8/f27d549fa16248bc97b9c0fad0e6a511 [2021-11-23 03:28:39,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:28:39,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:28:39,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:28:39,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:28:39,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:28:39,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:39" (1/1) ... [2021-11-23 03:28:39,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4294f669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:39, skipping insertion in model container [2021-11-23 03:28:39,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:39" (1/1) ... [2021-11-23 03:28:39,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:28:39,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:28:40,421 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_4380483e-c922-49c1-a937-b6a6b053c670/sv-benchmarks/c/product-lines/email_spec6_product32.cil.c[40215,40228] [2021-11-23 03:28:40,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:28:40,697 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:28:40,766 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_4380483e-c922-49c1-a937-b6a6b053c670/sv-benchmarks/c/product-lines/email_spec6_product32.cil.c[40215,40228] [2021-11-23 03:28:40,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:28:40,884 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:28:40,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40 WrapperNode [2021-11-23 03:28:40,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:28:40,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:28:40,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:28:40,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:28:40,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:40,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,072 INFO L137 Inliner]: procedures = 135, calls = 244, calls flagged for inlining = 62, calls inlined = 54, statements flattened = 1014 [2021-11-23 03:28:41,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:28:41,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:28:41,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:28:41,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:28:41,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:28:41,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:28:41,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:28:41,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:28:41,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (1/1) ... [2021-11-23 03:28:41,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:28:41,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:28:41,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:28:41,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:28:41,323 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 03:28:41,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 03:28:41,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:28:41,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:28:41,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:28:41,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:28:41,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:28:41,327 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:28:41,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:28:41,328 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:28:41,328 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:28:41,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:28:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:28:41,329 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:28:41,330 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:28:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:28:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:28:41,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:28:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 03:28:41,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 03:28:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:28:41,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:28:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:28:41,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:28:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:28:41,335 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:28:41,336 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:28:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 03:28:41,337 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 03:28:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:28:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:28:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:28:41,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:28:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:28:41,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:28:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:28:41,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:28:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:28:41,343 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:28:41,343 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:28:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:28:41,344 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:28:41,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:28:41,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:28:41,669 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:28:41,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:28:42,924 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:28:43,597 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:28:43,597 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:28:43,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:43 BoogieIcfgContainer [2021-11-23 03:28:43,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:28:43,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:28:43,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:28:43,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:28:43,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:39" (1/3) ... [2021-11-23 03:28:43,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724685a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:43, skipping insertion in model container [2021-11-23 03:28:43,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:40" (2/3) ... [2021-11-23 03:28:43,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724685a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:28:43, skipping insertion in model container [2021-11-23 03:28:43,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:28:43" (3/3) ... [2021-11-23 03:28:43,615 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product32.cil.c [2021-11-23 03:28:43,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:28:43,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:28:43,699 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:28:43,710 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:28:43,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:28:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 223 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 131 states have internal predecessors, (164), 67 states have call successors, (67), 28 states have call predecessors, (67), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 03:28:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 03:28:43,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:43,791 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:43,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2055090057, now seen corresponding path program 1 times [2021-11-23 03:28:43,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:43,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888172365] [2021-11-23 03:28:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:43,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:28:44,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888172365] [2021-11-23 03:28:44,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888172365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:44,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:44,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:28:44,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685275216] [2021-11-23 03:28:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:44,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:28:44,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:28:44,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:28:44,333 INFO L87 Difference]: Start difference. First operand has 223 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 131 states have internal predecessors, (164), 67 states have call successors, (67), 28 states have call predecessors, (67), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:44,585 INFO L93 Difference]: Finished difference Result 354 states and 467 transitions. [2021-11-23 03:28:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:28:44,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2021-11-23 03:28:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:44,604 INFO L225 Difference]: With dead ends: 354 [2021-11-23 03:28:44,604 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 03:28:44,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:28:44,617 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:44,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:28:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 03:28:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-23 03:28:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 124 states have (on average 1.2741935483870968) internal successors, (158), 128 states have internal predecessors, (158), 67 states have call successors, (67), 28 states have call predecessors, (67), 28 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-23 03:28:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 291 transitions. [2021-11-23 03:28:44,704 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 291 transitions. Word has length 87 [2021-11-23 03:28:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:44,707 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 291 transitions. [2021-11-23 03:28:44,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 291 transitions. [2021-11-23 03:28:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:28:44,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:44,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:44,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:28:44,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1616717141, now seen corresponding path program 1 times [2021-11-23 03:28:44,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:44,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953253559] [2021-11-23 03:28:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:44,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:28:44,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953253559] [2021-11-23 03:28:44,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953253559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:44,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:44,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:28:44,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432905610] [2021-11-23 03:28:44,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:44,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:28:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:28:44,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:44,946 INFO L87 Difference]: Start difference. First operand 220 states and 291 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:45,171 INFO L93 Difference]: Finished difference Result 350 states and 452 transitions. [2021-11-23 03:28:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:28:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2021-11-23 03:28:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:45,187 INFO L225 Difference]: With dead ends: 350 [2021-11-23 03:28:45,187 INFO L226 Difference]: Without dead ends: 222 [2021-11-23 03:28:45,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:45,197 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:45,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:28:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-23 03:28:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-23 03:28:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 130 states have internal predecessors, (160), 67 states have call successors, (67), 28 states have call predecessors, (67), 28 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-23 03:28:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 293 transitions. [2021-11-23 03:28:45,234 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 293 transitions. Word has length 88 [2021-11-23 03:28:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:45,237 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 293 transitions. [2021-11-23 03:28:45,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 293 transitions. [2021-11-23 03:28:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:28:45,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:45,243 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:45,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:28:45,244 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash -54829780, now seen corresponding path program 1 times [2021-11-23 03:28:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:45,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346711481] [2021-11-23 03:28:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:45,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:28:45,454 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:45,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346711481] [2021-11-23 03:28:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346711481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:45,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:28:45,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:28:45,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586287879] [2021-11-23 03:28:45,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:45,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:28:45,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:28:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:45,462 INFO L87 Difference]: Start difference. First operand 222 states and 293 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:45,633 INFO L93 Difference]: Finished difference Result 479 states and 653 transitions. [2021-11-23 03:28:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:28:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 93 [2021-11-23 03:28:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:45,641 INFO L225 Difference]: With dead ends: 479 [2021-11-23 03:28:45,641 INFO L226 Difference]: Without dead ends: 275 [2021-11-23 03:28:45,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:28:45,653 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 59 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:45,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 514 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:28:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-23 03:28:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2021-11-23 03:28:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.34375) internal successors, (215), 164 states have internal predecessors, (215), 81 states have call successors, (81), 28 states have call predecessors, (81), 28 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-23 03:28:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 376 transitions. [2021-11-23 03:28:45,711 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 376 transitions. Word has length 93 [2021-11-23 03:28:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:45,711 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 376 transitions. [2021-11-23 03:28:45,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:28:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 376 transitions. [2021-11-23 03:28:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 03:28:45,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:45,718 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:45,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:28:45,719 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:45,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1999508090, now seen corresponding path program 1 times [2021-11-23 03:28:45,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:45,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536865975] [2021-11-23 03:28:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:45,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:28:45,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536865975] [2021-11-23 03:28:45,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536865975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:28:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058902389] [2021-11-23 03:28:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:45,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:28:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:28:45,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:28:45,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:28:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:46,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:28:46,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:28:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:28:46,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:28:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:28:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058902389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:28:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194700640] [2021-11-23 03:28:46,915 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2021-11-23 03:28:46,915 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:28:46,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:28:46,935 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:28:46,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:29:35,854 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:29:36,229 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2021-11-23 03:29:38,674 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 03:29:38,989 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2021-11-23 03:29:43,104 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2021-11-23 03:29:43,158 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 233 for LOIs [2021-11-23 03:29:43,212 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 241 for LOIs [2021-11-23 03:29:43,297 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2021-11-23 03:29:43,399 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:30:13,976 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 468 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:40,115 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 565 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:23,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1194700640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:23,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:31:23,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2021-11-23 03:31:23,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687221446] [2021-11-23 03:31:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:23,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 03:31:23,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 03:31:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1956, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 03:31:23,977 INFO L87 Difference]: Start difference. First operand 270 states and 376 transitions. Second operand has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 03:32:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:10,674 INFO L93 Difference]: Finished difference Result 705 states and 1071 transitions. [2021-11-23 03:32:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 03:32:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) Word has length 105 [2021-11-23 03:32:10,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:10,682 INFO L225 Difference]: With dead ends: 705 [2021-11-23 03:32:10,682 INFO L226 Difference]: Without dead ends: 453 [2021-11-23 03:32:10,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 125.6s TimeCoverageRelationStatistics Valid=187, Invalid=2893, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 03:32:10,687 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 342 mSDsluCounter, 5991 mSDsCounter, 0 mSdLazyCounter, 6263 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 6166 SdHoareTripleChecker+Invalid, 6300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 6263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:10,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 6166 Invalid, 6300 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 6263 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2021-11-23 03:32:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-23 03:32:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 352. [2021-11-23 03:32:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 235 states have internal predecessors, (327), 87 states have call successors, (87), 35 states have call predecessors, (87), 33 states have return successors, (86), 83 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 03:32:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 500 transitions. [2021-11-23 03:32:10,838 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 500 transitions. Word has length 105 [2021-11-23 03:32:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:10,839 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 500 transitions. [2021-11-23 03:32:10,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (24), 9 states have call predecessors, (24), 7 states have return successors, (21), 11 states have call predecessors, (21), 11 states have call successors, (21) [2021-11-23 03:32:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 500 transitions. [2021-11-23 03:32:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 03:32:10,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:10,844 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:10,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:32:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 03:32:11,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1499648404, now seen corresponding path program 1 times [2021-11-23 03:32:11,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:11,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158995871] [2021-11-23 03:32:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:11,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:32:11,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:11,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158995871] [2021-11-23 03:32:11,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158995871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:32:11,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794683714] [2021-11-23 03:32:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:11,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:11,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:11,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:32:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:11,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:32:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:32:11,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:32:11,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794683714] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:11,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134110000] [2021-11-23 03:32:11,978 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-23 03:32:11,979 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:11,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:11,980 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:11,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:33:00,261 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:33:00,522 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2021-11-23 03:33:02,772 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2021-11-23 03:33:02,824 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 03:33:03,132 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 273 for LOIs [2021-11-23 03:33:06,861 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 283 for LOIs [2021-11-23 03:33:19,876 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2021-11-23 03:33:19,929 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2021-11-23 03:33:20,027 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2021-11-23 03:33:20,671 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2021-11-23 03:33:22,607 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 255 for LOIs [2021-11-23 03:33:22,702 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2021-11-23 03:33:22,795 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:33:52,146 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 468 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:29,716 WARN L227 SmtUtils]: Spent 13.79s on a formula simplification. DAG size of input: 574 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:39,954 WARN L227 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 578 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:02,951 WARN L227 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:48,997 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 437 DAG size of output: 261 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:01,496 WARN L227 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 456 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:07,368 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 475 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:13,092 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 473 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:24,034 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 482 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:31,650 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 484 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:40,662 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 526 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:56,197 WARN L227 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 544 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:04,161 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 545 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:16,216 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 577 DAG size of output: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:16,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [134110000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:16,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:37:16,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [4, 4, 4] total 65 [2021-11-23 03:37:16,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067386330] [2021-11-23 03:37:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:16,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-23 03:37:16,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:16,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-23 03:37:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3995, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 03:37:16,223 INFO L87 Difference]: Start difference. First operand 352 states and 500 transitions. Second operand has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-23 03:37:28,336 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 550 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:25,060 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 486 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:45,949 INFO L93 Difference]: Finished difference Result 632 states and 910 transitions. [2021-11-23 03:38:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-23 03:38:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) Word has length 94 [2021-11-23 03:38:45,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:45,958 INFO L225 Difference]: With dead ends: 632 [2021-11-23 03:38:45,958 INFO L226 Difference]: Without dead ends: 511 [2021-11-23 03:38:45,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 219 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 285.0s TimeCoverageRelationStatistics Valid=272, Invalid=6048, Unknown=0, NotChecked=0, Total=6320 [2021-11-23 03:38:45,963 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 315 mSDsluCounter, 8859 mSDsCounter, 0 mSdLazyCounter, 11461 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8954 SdHoareTripleChecker+Invalid, 11490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:45,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 8954 Invalid, 11490 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [29 Valid, 11461 Invalid, 0 Unknown, 0 Unchecked, 37.5s Time] [2021-11-23 03:38:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-23 03:38:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 403. [2021-11-23 03:38:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 263 states have (on average 1.391634980988593) internal successors, (366), 268 states have internal predecessors, (366), 101 states have call successors, (101), 40 states have call predecessors, (101), 38 states have return successors, (101), 96 states have call predecessors, (101), 100 states have call successors, (101) [2021-11-23 03:38:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 568 transitions. [2021-11-23 03:38:46,143 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 568 transitions. Word has length 94 [2021-11-23 03:38:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:46,144 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 568 transitions. [2021-11-23 03:38:46,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 38 states have (on average 1.236842105263158) internal successors, (47), 35 states have internal predecessors, (47), 19 states have call successors, (21), 13 states have call predecessors, (21), 10 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2021-11-23 03:38:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 568 transitions. [2021-11-23 03:38:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 03:38:46,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:46,148 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:46,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:38:46,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:46,371 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:46,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1987924033, now seen corresponding path program 1 times [2021-11-23 03:38:46,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:46,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796868074] [2021-11-23 03:38:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:46,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:38:46,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:46,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796868074] [2021-11-23 03:38:46,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796868074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:46,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:46,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:38:46,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061130160] [2021-11-23 03:38:46,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:46,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:46,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:46,502 INFO L87 Difference]: Start difference. First operand 403 states and 568 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:38:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:46,900 INFO L93 Difference]: Finished difference Result 893 states and 1292 transitions. [2021-11-23 03:38:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 99 [2021-11-23 03:38:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:46,908 INFO L225 Difference]: With dead ends: 893 [2021-11-23 03:38:46,909 INFO L226 Difference]: Without dead ends: 528 [2021-11-23 03:38:46,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:46,914 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 57 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:46,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 523 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:38:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-23 03:38:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 521. [2021-11-23 03:38:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 350 states have (on average 1.4285714285714286) internal successors, (500), 355 states have internal predecessors, (500), 132 states have call successors, (132), 40 states have call predecessors, (132), 38 states have return successors, (132), 127 states have call predecessors, (132), 131 states have call successors, (132) [2021-11-23 03:38:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 764 transitions. [2021-11-23 03:38:47,203 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 764 transitions. Word has length 99 [2021-11-23 03:38:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:47,204 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 764 transitions. [2021-11-23 03:38:47,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 03:38:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 764 transitions. [2021-11-23 03:38:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 03:38:47,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:47,211 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:38:47,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:38:47,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash -787186006, now seen corresponding path program 1 times [2021-11-23 03:38:47,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:47,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051668029] [2021-11-23 03:38:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:47,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:38:47,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:47,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051668029] [2021-11-23 03:38:47,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051668029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:47,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046770059] [2021-11-23 03:38:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:47,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:47,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:47,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4380483e-c922-49c1-a937-b6a6b053c670/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:38:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:47,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:47,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:38:47,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 03:38:48,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046770059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:48,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [108341542] [2021-11-23 03:38:48,071 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-23 03:38:48,071 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:38:48,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:38:48,072 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:38:48,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:39:34,176 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2021-11-23 03:39:34,422 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2021-11-23 03:39:34,725 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:40:05,403 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 468 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)