./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product26.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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/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 f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:02:42,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:02:42,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:02:42,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:02:42,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:02:42,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:02:42,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:02:42,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:02:42,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:02:42,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:02:42,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:02:42,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:02:42,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:02:42,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:02:42,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:02:42,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:02:42,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:02:42,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:02:42,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:02:42,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:02:42,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:02:42,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:02:42,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:02:42,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:02:42,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:02:42,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:02:42,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:02:42,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:02:42,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:02:42,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:02:42,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:02:42,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:02:42,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:02:42,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:02:42,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:02:42,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:02:42,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:02:42,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:02:42,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:02:42,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:02:42,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:02:42,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:02:42,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:02:42,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:02:42,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:02:42,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:02:42,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:02:42,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:02:42,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:02:42,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:02:42,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:02:42,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:02:42,339 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:02:42,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:02:42,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:02:42,340 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:02:42,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:02:42,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:02:42,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:02:42,341 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:02:42,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:02:42,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:02:42,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:02:42,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:02:42,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:02:42,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:02:42,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:02:42,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:02:42,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:02:42,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:02:42,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:02:42,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:02:42,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:02:42,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:02:42,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:42,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:02:42,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:02:42,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:02:42,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:02:42,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:02:42,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:02:42,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:02:42,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:02:42,349 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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 [2021-11-23 03:02:42,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:02:42,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:02:42,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:02:42,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:02:42,700 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:02:42,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2021-11-23 03:02:42,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/data/319edc88e/5ae31d6a55004233a978d4eab5d7d2b0/FLAG4f2dd23dc [2021-11-23 03:02:43,510 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:02:43,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2021-11-23 03:02:43,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/data/319edc88e/5ae31d6a55004233a978d4eab5d7d2b0/FLAG4f2dd23dc [2021-11-23 03:02:43,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/data/319edc88e/5ae31d6a55004233a978d4eab5d7d2b0 [2021-11-23 03:02:43,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:02:43,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:02:43,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:43,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:02:43,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:02:43,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:43" (1/1) ... [2021-11-23 03:02:43,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a64157f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:43, skipping insertion in model container [2021-11-23 03:02:43,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:43" (1/1) ... [2021-11-23 03:02:43,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:02:43,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:02:44,511 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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2021-11-23 03:02:44,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:44,531 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:02:44,679 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_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2021-11-23 03:02:44,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:02:44,724 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:02:44,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44 WrapperNode [2021-11-23 03:02:44,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:02:44,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:44,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:02:44,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:02:44,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,882 INFO L137 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1089 [2021-11-23 03:02:44,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:02:44,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:02:44,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:02:44,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:02:44,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:44,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:02:44,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:02:44,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:02:44,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:02:44,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (1/1) ... [2021-11-23 03:02:45,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:02:45,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:45,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:02:45,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:02:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:02:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:02:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:02:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:02:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:02:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:02:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:02:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:02:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:02:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:02:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:02:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:02:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:02:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:02:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:02:45,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:02:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:02:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:02:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:02:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:02:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:02:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:02:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:02:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:02:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:02:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:02:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:02:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:02:45,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:02:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:02:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:02:45,116 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:02:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:02:45,116 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:02:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:02:45,117 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:02:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:02:45,117 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:02:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:02:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:02:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:02:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:02:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:02:45,119 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:02:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:02:45,120 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:02:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:02:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:02:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:02:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:02:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:02:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:02:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:02:45,433 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:02:45,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:02:46,603 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:02:47,211 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:02:47,211 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:02:47,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:47 BoogieIcfgContainer [2021-11-23 03:02:47,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:02:47,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:02:47,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:02:47,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:02:47,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:43" (1/3) ... [2021-11-23 03:02:47,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a127e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:47, skipping insertion in model container [2021-11-23 03:02:47,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:44" (2/3) ... [2021-11-23 03:02:47,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a127e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:47, skipping insertion in model container [2021-11-23 03:02:47,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:47" (3/3) ... [2021-11-23 03:02:47,225 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2021-11-23 03:02:47,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:02:47,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:02:47,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:02:47,339 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 03:02:47,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:02:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-23 03:02:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 03:02:47,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:47,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:47,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash 120790459, now seen corresponding path program 1 times [2021-11-23 03:02:47,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:47,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472368818] [2021-11-23 03:02:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:47,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:02:47,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:47,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472368818] [2021-11-23 03:02:47,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472368818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:47,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:47,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:02:47,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326295887] [2021-11-23 03:02:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:47,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:02:47,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:02:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:02:47,938 INFO L87 Difference]: Start difference. First operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:02:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:48,193 INFO L93 Difference]: Finished difference Result 310 states and 415 transitions. [2021-11-23 03:02:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:02:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2021-11-23 03:02:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:48,218 INFO L225 Difference]: With dead ends: 310 [2021-11-23 03:02:48,218 INFO L226 Difference]: Without dead ends: 198 [2021-11-23 03:02:48,230 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 03:02:48,236 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:48,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:02:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-23 03:02:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-23 03:02:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 03:02:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2021-11-23 03:02:48,331 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 84 [2021-11-23 03:02:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:48,333 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2021-11-23 03:02:48,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 03:02:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2021-11-23 03:02:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:02:48,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:48,339 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:02:48,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:02:48,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 458755224, now seen corresponding path program 1 times [2021-11-23 03:02:48,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:48,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183453411] [2021-11-23 03:02:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:48,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:02:48,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:48,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183453411] [2021-11-23 03:02:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183453411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:48,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:48,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:02:48,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339779804] [2021-11-23 03:02:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:48,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:48,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:48,504 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:48,757 INFO L93 Difference]: Finished difference Result 306 states and 400 transitions. [2021-11-23 03:02:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:48,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2021-11-23 03:02:48,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:48,762 INFO L225 Difference]: With dead ends: 306 [2021-11-23 03:02:48,762 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 03:02:48,763 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 03:02:48,765 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:48,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:02:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 03:02:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-23 03:02:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 117 states have internal predecessors, (144), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-23 03:02:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2021-11-23 03:02:48,818 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 74 [2021-11-23 03:02:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:48,821 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2021-11-23 03:02:48,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2021-11-23 03:02:48,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 03:02:48,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:48,828 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] [2021-11-23 03:02:48,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:02:48,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:48,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1350248299, now seen corresponding path program 1 times [2021-11-23 03:02:48,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:48,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232204987] [2021-11-23 03:02:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:48,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:02:48,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:48,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232204987] [2021-11-23 03:02:48,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232204987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:02:48,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:02:48,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:02:49,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978861410] [2021-11-23 03:02:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:02:49,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:02:49,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:02:49,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:02:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:02:49,009 INFO L87 Difference]: Start difference. First operand 200 states and 267 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:02:49,201 INFO L93 Difference]: Finished difference Result 435 states and 601 transitions. [2021-11-23 03:02:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:02:49,202 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2021-11-23 03:02:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:02:49,206 INFO L225 Difference]: With dead ends: 435 [2021-11-23 03:02:49,206 INFO L226 Difference]: Without dead ends: 253 [2021-11-23 03:02:49,208 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 03:02:49,212 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 59 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:02:49,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 464 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:02:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-23 03:02:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2021-11-23 03:02:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 151 states have internal predecessors, (199), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-23 03:02:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 350 transitions. [2021-11-23 03:02:49,283 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 350 transitions. Word has length 79 [2021-11-23 03:02:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:02:49,285 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 350 transitions. [2021-11-23 03:02:49,286 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 03:02:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 350 transitions. [2021-11-23 03:02:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 03:02:49,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:02:49,291 INFO L514 BasicCegarLoop]: trace histogram [3, 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 03:02:49,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:02:49,292 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:02:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:02:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -184388308, now seen corresponding path program 1 times [2021-11-23 03:02:49,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:02:49,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709363037] [2021-11-23 03:02:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:49,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:02:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:02:49,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:02:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709363037] [2021-11-23 03:02:49,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709363037] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:02:49,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911974047] [2021-11-23 03:02:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:02:49,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:02:49,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:02:49,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:02:49,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:02:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:02:49,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:02:49,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:02:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:02:50,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:02:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:02:50,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911974047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:02:50,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1770941425] [2021-11-23 03:02:50,549 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2021-11-23 03:02:50,549 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:02:50,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:02:50,562 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:02:50,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:03:21,526 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:03:21,854 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:03:22,214 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:03:40,334 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:03:57,976 WARN L227 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:04,449 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:16,472 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:04:38,935 WARN L227 SmtUtils]: Spent 21.01s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:03,858 WARN L227 SmtUtils]: Spent 23.08s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:28,988 WARN L227 SmtUtils]: Spent 23.11s on a formula simplification. DAG size of input: 590 DAG size of output: 464 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:52,984 WARN L227 SmtUtils]: Spent 22.17s on a formula simplification. DAG size of input: 588 DAG size of output: 462 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:05:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1770941425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:05:57,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:05:57,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 03:05:57,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912225039] [2021-11-23 03:05:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:05:57,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:05:57,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:05:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:05:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:05:57,803 INFO L87 Difference]: Start difference. First operand 248 states and 350 transitions. Second operand has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-23 03:06:09,361 WARN L227 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:19,751 WARN L227 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 511 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:30,519 WARN L227 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 518 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:40,575 WARN L227 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 509 DAG size of output: 425 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:06:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:06:51,006 INFO L93 Difference]: Finished difference Result 547 states and 807 transitions. [2021-11-23 03:06:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:06:51,008 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 91 [2021-11-23 03:06:51,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:06:51,012 INFO L225 Difference]: With dead ends: 547 [2021-11-23 03:06:51,012 INFO L226 Difference]: Without dead ends: 317 [2021-11-23 03:06:51,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 196.6s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:06:51,015 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 128 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:06:51,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 3515 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2021-11-23 03:06:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-23 03:06:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 276. [2021-11-23 03:06:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 174 states have (on average 1.367816091954023) internal successors, (238), 178 states have internal predecessors, (238), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-23 03:06:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 389 transitions. [2021-11-23 03:06:51,123 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 389 transitions. Word has length 91 [2021-11-23 03:06:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:06:51,124 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 389 transitions. [2021-11-23 03:06:51,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-11-23 03:06:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 389 transitions. [2021-11-23 03:06:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:06:51,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:51,128 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-23 03:06:51,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:06:51,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:06:51,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:06:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash 990561314, now seen corresponding path program 1 times [2021-11-23 03:06:51,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:51,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437939658] [2021-11-23 03:06:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:51,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:06:51,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:51,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437939658] [2021-11-23 03:06:51,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437939658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:06:51,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852236552] [2021-11-23 03:06:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:51,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:06:51,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:06:51,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:06:51,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:06:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:51,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:06:51,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:06:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:06:52,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:06:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:06:52,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852236552] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:06:52,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337029046] [2021-11-23 03:06:52,245 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-23 03:06:52,245 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:06:52,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:06:52,246 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:06:52,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:07:32,715 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:07:33,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:07:33,314 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2021-11-23 03:07:35,263 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2021-11-23 03:07:35,337 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 250 for LOIs [2021-11-23 03:07:36,361 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 257 for LOIs [2021-11-23 03:07:44,068 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 435 for LOIs [2021-11-23 03:07:44,663 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2021-11-23 03:07:46,562 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2021-11-23 03:07:46,614 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:08:18,551 WARN L227 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 476 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:25,540 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 486 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:30,946 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 498 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:39,296 WARN L227 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 508 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:08:58,071 WARN L227 SmtUtils]: Spent 16.86s on a formula simplification. DAG size of input: 587 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:09:21,092 WARN L227 SmtUtils]: Spent 21.15s on a formula simplification. DAG size of input: 589 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:09:47,786 WARN L227 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 468 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:20,928 WARN L227 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 435 DAG size of output: 241 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:31,709 WARN L227 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:10:41,640 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 533 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:01,307 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 587 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:07,725 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 588 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:15,114 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 652 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:15,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1337029046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:11:15,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:11:15,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2021-11-23 03:11:15,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085492301] [2021-11-23 03:11:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:11:15,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 03:11:15,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:11:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 03:11:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=3262, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 03:11:15,120 INFO L87 Difference]: Start difference. First operand 276 states and 389 transitions. Second operand has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-11-23 03:11:26,285 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 458 DAG size of output: 338 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:46,673 WARN L227 SmtUtils]: Spent 19.82s on a formula simplification. DAG size of input: 504 DAG size of output: 456 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:11:55,999 WARN L227 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 458 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:12:05,176 WARN L227 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 456 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:13:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:13:04,772 INFO L93 Difference]: Finished difference Result 663 states and 976 transitions. [2021-11-23 03:13:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-23 03:13:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 86 [2021-11-23 03:13:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:13:04,778 INFO L225 Difference]: With dead ends: 663 [2021-11-23 03:13:04,778 INFO L226 Difference]: Without dead ends: 433 [2021-11-23 03:13:04,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 294.4s TimeCoverageRelationStatistics Valid=257, Invalid=5293, Unknown=0, NotChecked=0, Total=5550 [2021-11-23 03:13:04,783 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 215 mSDsluCounter, 5686 mSDsCounter, 0 mSdLazyCounter, 6740 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 6786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:13:04,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 5708 Invalid, 6786 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [46 Valid, 6740 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2021-11-23 03:13:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-23 03:13:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 350. [2021-11-23 03:13:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 230 states have (on average 1.3608695652173912) internal successors, (313), 235 states have internal predecessors, (313), 88 states have call successors, (88), 33 states have call predecessors, (88), 31 states have return successors, (88), 83 states have call predecessors, (88), 87 states have call successors, (88) [2021-11-23 03:13:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 489 transitions. [2021-11-23 03:13:04,947 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 489 transitions. Word has length 86 [2021-11-23 03:13:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:13:04,948 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 489 transitions. [2021-11-23 03:13:04,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 34 states have internal predecessors, (45), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-11-23 03:13:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 489 transitions. [2021-11-23 03:13:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 03:13:04,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:13:04,952 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, 1] [2021-11-23 03:13:04,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:13:05,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:13:05,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:13:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:13:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2014060439, now seen corresponding path program 1 times [2021-11-23 03:13:05,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:13:05,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693667698] [2021-11-23 03:13:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:05,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:13:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:13:05,278 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:13:05,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693667698] [2021-11-23 03:13:05,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693667698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:13:05,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319595446] [2021-11-23 03:13:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:13:05,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:13:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:13:05,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:13:05,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d62c1016-8c1e-4537-ae9e-1efd6c4d0350/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:13:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:13:05,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:13:05,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:13:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:13:05,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:13:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:13:06,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319595446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:13:06,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1445690544] [2021-11-23 03:13:06,011 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2021-11-23 03:13:06,012 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:13:06,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:13:06,013 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:13:06,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:13:47,169 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:13:47,433 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 03:13:47,513 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 03:13:47,590 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 447 for LOIs [2021-11-23 03:13:47,726 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:13:48,019 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:14:05,309 WARN L227 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)