./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:22:41,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:22:41,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:22:41,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:22:41,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:22:41,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:22:41,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:22:41,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:22:41,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:22:41,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:22:41,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:22:41,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:22:41,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:22:41,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:22:41,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:22:41,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:22:41,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:22:41,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:22:41,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:22:41,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:22:41,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:22:41,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:22:41,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:22:41,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:22:41,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:22:41,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:22:41,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:22:41,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:22:41,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:22:41,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:22:41,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:22:41,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:22:41,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:22:41,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:22:41,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:22:41,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:22:41,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:22:41,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:22:41,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:22:41,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:22:41,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:22:41,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:22:41,283 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:22:41,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:22:41,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:22:41,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:22:41,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:22:41,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:22:41,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:22:41,286 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:22:41,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:22:41,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:22:41,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:22:41,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:22:41,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:22:41,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:22:41,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:22:41,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:22:41,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:22:41,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:22:41,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:22:41,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:22:41,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:22:41,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:22:41,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:22:41,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:22:41,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:22:41,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:22:41,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:22:41,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:22:41,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:22:41,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:22:41,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:22:41,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:22:41,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:22:41,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:22:41,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:22:41,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:22:41,294 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:22:41,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:22:41,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:22:41,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:22:41,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:22:41,295 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_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2021-11-21 01:22:41,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:22:41,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:22:41,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:22:41,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:22:41,597 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:22:41,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-21 01:22:41,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/data/b70cc6e06/d0b2d7edab4b410cadf4aafa71eb50c9/FLAGe35d283b3 [2021-11-21 01:22:42,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:22:42,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-21 01:22:42,303 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/data/b70cc6e06/d0b2d7edab4b410cadf4aafa71eb50c9/FLAGe35d283b3 [2021-11-21 01:22:42,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/data/b70cc6e06/d0b2d7edab4b410cadf4aafa71eb50c9 [2021-11-21 01:22:42,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:22:42,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:22:42,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:22:42,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:22:42,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:22:42,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:22:42" (1/1) ... [2021-11-21 01:22:42,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13176d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:42, skipping insertion in model container [2021-11-21 01:22:42,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:22:42" (1/1) ... [2021-11-21 01:22:42,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:22:42,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:22:43,002 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_90c992ee-cdf8-403e-acef-0a9c35e943fc/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-21 01:22:43,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:22:43,313 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:22:43,364 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_90c992ee-cdf8-403e-acef-0a9c35e943fc/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-21 01:22:43,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:22:43,537 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:22:43,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43 WrapperNode [2021-11-21 01:22:43,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:22:43,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:22:43,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:22:43,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:22:43,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,727 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1303 [2021-11-21 01:22:43,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:22:43,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:22:43,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:22:43,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:22:43,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:22:43,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:22:43,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:22:43,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:22:43,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (1/1) ... [2021-11-21 01:22:43,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:22:43,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:43,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:22:43,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:22:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-21 01:22:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-21 01:22:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-21 01:22:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-21 01:22:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-21 01:22:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-21 01:22:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-21 01:22:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-21 01:22:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-21 01:22:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-21 01:22:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-21 01:22:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-21 01:22:43,960 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-21 01:22:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-21 01:22:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-21 01:22:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-21 01:22:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-21 01:22:43,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-21 01:22:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-21 01:22:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-21 01:22:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-21 01:22:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-21 01:22:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-21 01:22:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-21 01:22:43,962 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-21 01:22:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-21 01:22:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-21 01:22:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-21 01:22:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-21 01:22:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-21 01:22:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-21 01:22:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-21 01:22:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-21 01:22:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-21 01:22:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-21 01:22:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-21 01:22:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-21 01:22:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-21 01:22:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-21 01:22:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-21 01:22:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-21 01:22:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-21 01:22:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-21 01:22:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-21 01:22:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-21 01:22:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-21 01:22:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-21 01:22:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:22:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-21 01:22:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-21 01:22:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-21 01:22:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-21 01:22:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-21 01:22:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-21 01:22:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-21 01:22:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-21 01:22:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-21 01:22:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-21 01:22:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-21 01:22:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-21 01:22:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-21 01:22:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-21 01:22:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-21 01:22:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-21 01:22:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-21 01:22:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-21 01:22:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-21 01:22:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-21 01:22:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-21 01:22:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-21 01:22:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-21 01:22:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-21 01:22:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-21 01:22:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-21 01:22:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-21 01:22:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-21 01:22:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-21 01:22:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-21 01:22:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-21 01:22:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-21 01:22:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:22:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-21 01:22:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-21 01:22:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-21 01:22:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-21 01:22:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-21 01:22:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-21 01:22:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-21 01:22:43,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-21 01:22:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:22:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:22:44,364 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:22:44,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:22:45,375 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:22:45,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:22:45,928 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:22:45,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:22:45 BoogieIcfgContainer [2021-11-21 01:22:45,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:22:45,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:22:45,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:22:45,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:22:45,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:22:42" (1/3) ... [2021-11-21 01:22:45,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b12e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:22:45, skipping insertion in model container [2021-11-21 01:22:45,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:22:43" (2/3) ... [2021-11-21 01:22:45,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b12e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:22:45, skipping insertion in model container [2021-11-21 01:22:45,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:22:45" (3/3) ... [2021-11-21 01:22:45,943 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2021-11-21 01:22:45,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:22:45,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:22:46,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:22:46,033 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 [2021-11-21 01:22:46,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:22:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-21 01:22:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-21 01:22:46,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:46,110 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:46,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1210651593, now seen corresponding path program 1 times [2021-11-21 01:22:46,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:46,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004431327] [2021-11-21 01:22:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:46,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:46,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:46,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004431327] [2021-11-21 01:22:46,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004431327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:46,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:46,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:22:46,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673536886] [2021-11-21 01:22:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:46,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:22:46,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:22:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:22:46,682 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:47,028 INFO L93 Difference]: Finished difference Result 726 states and 996 transitions. [2021-11-21 01:22:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:22:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2021-11-21 01:22:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:47,054 INFO L225 Difference]: With dead ends: 726 [2021-11-21 01:22:47,054 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:22:47,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:22:47,070 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:47,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:22:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:22:47,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-21 01:22:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-21 01:22:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2021-11-21 01:22:47,188 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 127 [2021-11-21 01:22:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:47,190 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2021-11-21 01:22:47,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:47,191 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2021-11-21 01:22:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:22:47,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:47,197 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:47,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:22:47,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1349484640, now seen corresponding path program 1 times [2021-11-21 01:22:47,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:47,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646180053] [2021-11-21 01:22:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:47,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:47,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:47,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646180053] [2021-11-21 01:22:47,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646180053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:47,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:47,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:22:47,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733293382] [2021-11-21 01:22:47,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:47,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:22:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:22:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:47,417 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:47,594 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2021-11-21 01:22:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:22:47,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 133 [2021-11-21 01:22:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:47,601 INFO L225 Difference]: With dead ends: 592 [2021-11-21 01:22:47,601 INFO L226 Difference]: Without dead ends: 376 [2021-11-21 01:22:47,606 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 [2021-11-21 01:22:47,609 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:47,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:22:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-21 01:22:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-21 01:22:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-21 01:22:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2021-11-21 01:22:47,655 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 133 [2021-11-21 01:22:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:47,658 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2021-11-21 01:22:47,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2021-11-21 01:22:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 01:22:47,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:47,666 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:47,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:22:47,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 724788588, now seen corresponding path program 1 times [2021-11-21 01:22:47,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:47,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18574887] [2021-11-21 01:22:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:47,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:47,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:47,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18574887] [2021-11-21 01:22:47,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18574887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:22:47,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:22:47,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:22:47,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102048783] [2021-11-21 01:22:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:22:47,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:22:47,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:22:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:22:47,825 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:47,999 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2021-11-21 01:22:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:22:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2021-11-21 01:22:48,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:48,005 INFO L225 Difference]: With dead ends: 751 [2021-11-21 01:22:48,005 INFO L226 Difference]: Without dead ends: 443 [2021-11-21 01:22:48,006 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 [2021-11-21 01:22:48,014 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:48,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:22:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-21 01:22:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-11-21 01:22:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2021-11-21 01:22:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2021-11-21 01:22:48,050 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 138 [2021-11-21 01:22:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:48,050 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2021-11-21 01:22:48,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-21 01:22:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2021-11-21 01:22:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-21 01:22:48,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:48,060 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:48,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:22:48,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1961562236, now seen corresponding path program 1 times [2021-11-21 01:22:48,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62974422] [2021-11-21 01:22:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:48,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:48,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:48,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62974422] [2021-11-21 01:22:48,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62974422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:22:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364520969] [2021-11-21 01:22:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:48,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:48,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:48,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:48,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90c992ee-cdf8-403e-acef-0a9c35e943fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:22:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:22:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:22:48,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:48,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:22:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:22:49,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364520969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:22:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551033190] [2021-11-21 01:22:49,349 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2021-11-21 01:22:49,349 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:22:49,354 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:22:49,359 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:22:49,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:27:49,668 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-21 01:28:12,133 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-21 01:28:34,828 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 271 for LOIs [2021-11-21 01:28:57,866 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2021-11-21 01:29:02,477 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-21 01:29:24,269 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2021-11-21 01:29:28,860 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 279 for LOIs [2021-11-21 01:29:34,354 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 271 for LOIs [2021-11-21 01:29:39,303 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 269 for LOIs [2021-11-21 01:29:44,629 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 269 for LOIs [2021-11-21 01:30:12,711 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 259 for LOIs [2021-11-21 01:30:17,432 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 255 for LOIs [2021-11-21 01:30:31,790 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2021-11-21 01:30:33,491 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 255 for LOIs [2021-11-21 01:30:46,186 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 242 for LOIs [2021-11-21 01:30:48,004 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2021-11-21 01:30:49,422 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2021-11-21 01:30:53,557 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:32:32,100 WARN L227 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 472 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:33:11,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [551033190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:11,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:33:11,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [4, 4, 4] total 90 [2021-11-21 01:33:11,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714547987] [2021-11-21 01:33:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:11,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-21 01:33:11,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-21 01:33:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=7687, Unknown=0, NotChecked=0, Total=8010 [2021-11-21 01:33:11,851 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23)