./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7 --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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:57:11,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:57:11,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:57:11,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:57:11,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:57:11,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:57:11,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:57:11,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:57:11,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:57:11,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:57:11,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:57:11,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:57:11,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:57:11,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:57:11,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:57:11,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:57:11,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:57:11,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:57:11,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:57:11,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:57:11,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:57:11,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:57:11,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:57:11,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:57:11,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:57:11,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:57:11,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:57:11,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:57:11,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:57:11,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:57:11,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:57:11,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:57:11,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:57:11,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:57:11,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:57:11,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:57:11,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:57:11,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:57:11,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:57:11,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:57:11,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:57:11,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:57:11,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:57:11,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:57:11,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:57:11,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:57:11,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:57:11,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:57:11,294 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:57:11,294 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:57:11,294 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:57:11,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:57:11,295 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:57:11,295 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:57:11,295 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:57:11,298 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:57:11,298 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:57:11,299 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:57:11,299 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:57:11,299 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:57:11,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:57:11,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:57:11,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:57:11,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:57:11,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:57:11,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:57:11,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:57:11,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:57:11,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:57:11,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:57:11,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:57:11,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:57:11,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:57:11,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:57:11,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:57:11,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:57:11,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:57:11,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:57:11,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:57:11,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:57:11,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:57:11,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:57:11,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:57:11,306 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_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-11-25 19:57:11,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:57:11,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:57:11,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:57:11,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:57:11,569 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:57:11,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-25 19:57:11,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/data/355f07787/5bfff48ff04644cb98c2f1cf78b1c2d7/FLAG3c83ed9ae [2021-11-25 19:57:12,311 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:57:12,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-11-25 19:57:12,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/data/355f07787/5bfff48ff04644cb98c2f1cf78b1c2d7/FLAG3c83ed9ae [2021-11-25 19:57:12,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/data/355f07787/5bfff48ff04644cb98c2f1cf78b1c2d7 [2021-11-25 19:57:12,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:57:12,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:57:12,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:57:12,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:57:12,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:57:12,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:57:12" (1/1) ... [2021-11-25 19:57:12,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65463ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:12, skipping insertion in model container [2021-11-25 19:57:12,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:57:12" (1/1) ... [2021-11-25 19:57:12,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:57:12,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:57:13,082 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_59341d62-2d02-4c56-b870-360922935551/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-25 19:57:13,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:57:13,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:57:13,235 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_59341d62-2d02-4c56-b870-360922935551/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-11-25 19:57:13,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:57:13,327 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:57:13,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13 WrapperNode [2021-11-25 19:57:13,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:57:13,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:57:13,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:57:13,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:57:13,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,473 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2021-11-25 19:57:13,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:57:13,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:57:13,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:57:13,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:57:13,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:57:13,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:57:13,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:57:13,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:57:13,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (1/1) ... [2021-11-25 19:57:13,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:57:13,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:13,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:57:13,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:57:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 19:57:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 19:57:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 19:57:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 19:57:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 19:57:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 19:57:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 19:57:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 19:57:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 19:57:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 19:57:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 19:57:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 19:57:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 19:57:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 19:57:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 19:57:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 19:57:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 19:57:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 19:57:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 19:57:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 19:57:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 19:57:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 19:57:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 19:57:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 19:57:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 19:57:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 19:57:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 19:57:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 19:57:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 19:57:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 19:57:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 19:57:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 19:57:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 19:57:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 19:57:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 19:57:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 19:57:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 19:57:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 19:57:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 19:57:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 19:57:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 19:57:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 19:57:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 19:57:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 19:57:13,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 19:57:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 19:57:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 19:57:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:57:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 19:57:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 19:57:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 19:57:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 19:57:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 19:57:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 19:57:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 19:57:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 19:57:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 19:57:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 19:57:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 19:57:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 19:57:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 19:57:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 19:57:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 19:57:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 19:57:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 19:57:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 19:57:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 19:57:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 19:57:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 19:57:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 19:57:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 19:57:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 19:57:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 19:57:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 19:57:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 19:57:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 19:57:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 19:57:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 19:57:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 19:57:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 19:57:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:57:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 19:57:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 19:57:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 19:57:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 19:57:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 19:57:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 19:57:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 19:57:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 19:57:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:57:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:57:14,045 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:57:14,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:57:14,954 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:57:15,550 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:57:15,551 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:57:15,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:15 BoogieIcfgContainer [2021-11-25 19:57:15,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:57:15,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:57:15,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:57:15,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:57:15,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:57:12" (1/3) ... [2021-11-25 19:57:15,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d75fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:15, skipping insertion in model container [2021-11-25 19:57:15,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:57:13" (2/3) ... [2021-11-25 19:57:15,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d75fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:57:15, skipping insertion in model container [2021-11-25 19:57:15,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:57:15" (3/3) ... [2021-11-25 19:57:15,563 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2021-11-25 19:57:15,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:57:15,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:57:15,630 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:57:15,637 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 [2021-11-25 19:57:15,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:57:15,666 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) [2021-11-25 19:57:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-25 19:57:15,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:15,691 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:15,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1108954499, now seen corresponding path program 1 times [2021-11-25 19:57:15,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:15,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455030608] [2021-11-25 19:57:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:15,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:16,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455030608] [2021-11-25 19:57:16,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455030608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:16,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:16,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:57:16,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308702974] [2021-11-25 19:57:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:16,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:57:16,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:57:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:57:16,337 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 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:16,726 INFO L93 Difference]: Finished difference Result 726 states and 998 transitions. [2021-11-25 19:57:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:57:16,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2021-11-25 19:57:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:16,744 INFO L225 Difference]: With dead ends: 726 [2021-11-25 19:57:16,744 INFO L226 Difference]: Without dead ends: 374 [2021-11-25 19:57:16,752 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 [2021-11-25 19:57:16,756 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 [2021-11-25 19:57:16,757 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] [2021-11-25 19:57:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-25 19:57:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-25 19:57:16,837 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) [2021-11-25 19:57:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2021-11-25 19:57:16,843 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2021-11-25 19:57:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2021-11-25 19:57:16,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2021-11-25 19:57:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 19:57:16,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:16,857 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:57:16,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:57:16,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:16,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash 448457004, now seen corresponding path program 1 times [2021-11-25 19:57:16,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:16,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618818445] [2021-11-25 19:57:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:16,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:16,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:16,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618818445] [2021-11-25 19:57:16,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618818445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:16,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:16,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:16,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526842706] [2021-11-25 19:57:16,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:16,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:16,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:16,991 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:17,170 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2021-11-25 19:57:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2021-11-25 19:57:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:17,181 INFO L225 Difference]: With dead ends: 592 [2021-11-25 19:57:17,182 INFO L226 Difference]: Without dead ends: 376 [2021-11-25 19:57:17,187 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 [2021-11-25 19:57:17,190 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 [2021-11-25 19:57:17,190 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] [2021-11-25 19:57:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-25 19:57:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-25 19:57:17,249 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) [2021-11-25 19:57:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2021-11-25 19:57:17,255 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2021-11-25 19:57:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:17,256 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2021-11-25 19:57:17,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2021-11-25 19:57:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 19:57:17,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:17,261 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] [2021-11-25 19:57:17,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:57:17,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash -120524735, now seen corresponding path program 1 times [2021-11-25 19:57:17,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:17,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168171349] [2021-11-25 19:57:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:17,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:17,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:17,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168171349] [2021-11-25 19:57:17,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168171349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:57:17,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:57:17,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:57:17,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877050310] [2021-11-25 19:57:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:57:17,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:57:17,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:57:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:57:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:57:17,414 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:57:17,566 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2021-11-25 19:57:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:57:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2021-11-25 19:57:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:57:17,577 INFO L225 Difference]: With dead ends: 751 [2021-11-25 19:57:17,577 INFO L226 Difference]: Without dead ends: 443 [2021-11-25 19:57:17,579 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 [2021-11-25 19:57:17,588 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 [2021-11-25 19:57:17,589 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] [2021-11-25 19:57:17,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-25 19:57:17,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-11-25 19:57:17,646 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) [2021-11-25 19:57:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2021-11-25 19:57:17,652 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2021-11-25 19:57:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:57:17,653 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2021-11-25 19:57:17,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 19:57:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2021-11-25 19:57:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 19:57:17,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:57:17,663 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] [2021-11-25 19:57:17,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:57:17,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:57:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:57:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1825392753, now seen corresponding path program 1 times [2021-11-25 19:57:17,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:57:17,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829716755] [2021-11-25 19:57:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:17,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:57:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:17,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:57:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829716755] [2021-11-25 19:57:17,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829716755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:57:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773576076] [2021-11-25 19:57:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:57:17,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:57:17,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:57:17,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:57:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:57:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:57:18,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:57:18,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:57:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:18,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:57:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:57:18,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773576076] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:57:18,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913527340] [2021-11-25 19:57:18,990 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2021-11-25 19:57:18,990 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:57:18,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:57:19,004 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:57:19,004 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:57:45,956 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-25 19:57:47,094 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-25 19:57:48,322 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2021-11-25 19:57:50,217 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2021-11-25 19:57:50,451 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-25 19:57:51,856 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 450 for LOIs [2021-11-25 19:57:52,243 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2021-11-25 19:57:52,307 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 274 for LOIs [2021-11-25 19:57:52,473 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 262 for LOIs [2021-11-25 19:57:52,621 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 260 for LOIs [2021-11-25 19:57:52,746 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2021-11-25 19:57:57,209 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2021-11-25 19:57:57,829 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2021-11-25 19:57:58,446 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 443 for LOIs [2021-11-25 19:58:09,032 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2021-11-25 19:58:11,284 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 433 for LOIs [2021-11-25 19:58:11,477 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 432 for LOIs [2021-11-25 19:58:11,677 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-25 19:58:11,728 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2021-11-25 19:58:13,122 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:59:23,629 WARN L227 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 720 DAG size of output: 508 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:59:31,091 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 717 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:02,683 WARN L227 SmtUtils]: Spent 17.15s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:10,340 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:16,889 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 551 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:00:33,035 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 474 DAG size of output: 251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:31,031 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 513 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:02:36,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [913527340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:36,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:02:36,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [92] imperfect sequences [4, 4, 4] total 98 [2021-11-25 20:02:36,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260056804] [2021-11-25 20:02:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-25 20:02:36,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-25 20:02:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=9162, Unknown=0, NotChecked=0, Total=9506 [2021-11-25 20:02:36,372 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-25 20:03:34,086 WARN L227 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 810 DAG size of output: 663 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:46,650 WARN L227 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 723 DAG size of output: 579 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:03:54,884 WARN L227 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 721 DAG size of output: 577 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:04:01,564 WARN L227 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 644 DAG size of output: 582 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:04:11,497 WARN L227 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 572 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:04:21,854 WARN L227 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 574 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:05:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:22,811 INFO L93 Difference]: Finished difference Result 1271 states and 1848 transitions. [2021-11-25 20:05:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-25 20:05:22,812 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 133 [2021-11-25 20:05:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:22,820 INFO L225 Difference]: With dead ends: 1271 [2021-11-25 20:05:22,821 INFO L226 Difference]: Without dead ends: 854 [2021-11-25 20:05:22,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 298 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5268 ImplicationChecksByTransitivity, 374.1s TimeCoverageRelationStatistics Valid=521, Invalid=13521, Unknown=0, NotChecked=0, Total=14042 [2021-11-25 20:05:22,829 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 563 mSDsluCounter, 15261 mSDsCounter, 0 mSdLazyCounter, 19514 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 15333 SdHoareTripleChecker+Invalid, 19639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 19514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:22,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 15333 Invalid, 19639 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [125 Valid, 19514 Invalid, 0 Unknown, 0 Unchecked, 54.5s Time] [2021-11-25 20:05:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-25 20:05:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 688. [2021-11-25 20:05:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 501 states have internal predecessors, (651), 144 states have call successors, (144), 68 states have call predecessors, (144), 64 states have return successors, (147), 137 states have call predecessors, (147), 143 states have call successors, (147) [2021-11-25 20:05:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 942 transitions. [2021-11-25 20:05:23,054 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 942 transitions. Word has length 133 [2021-11-25 20:05:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:23,055 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 942 transitions. [2021-11-25 20:05:23,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 58 states have internal predecessors, (72), 29 states have call successors, (29), 19 states have call predecessors, (29), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-25 20:05:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 942 transitions. [2021-11-25 20:05:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:05:23,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:23,060 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, 1, 1] [2021-11-25 20:05:23,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:23,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:23,274 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:23,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2034615151, now seen corresponding path program 1 times [2021-11-25 20:05:23,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:23,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179951635] [2021-11-25 20:05:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:23,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 20:05:23,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:23,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179951635] [2021-11-25 20:05:23,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179951635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:23,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:23,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966699052] [2021-11-25 20:05:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:23,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:05:23,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:05:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:23,389 INFO L87 Difference]: Start difference. First operand 688 states and 942 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:05:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:23,868 INFO L93 Difference]: Finished difference Result 1712 states and 2406 transitions. [2021-11-25 20:05:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:05:23,868 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 135 [2021-11-25 20:05:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:23,880 INFO L225 Difference]: With dead ends: 1712 [2021-11-25 20:05:23,881 INFO L226 Difference]: Without dead ends: 1075 [2021-11-25 20:05:23,884 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 [2021-11-25 20:05:23,885 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 468 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:23,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1200 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:05:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-11-25 20:05:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1071. [2021-11-25 20:05:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 715 states have (on average 1.353846153846154) internal successors, (968), 754 states have internal predecessors, (968), 249 states have call successors, (249), 110 states have call predecessors, (249), 106 states have return successors, (271), 241 states have call predecessors, (271), 247 states have call successors, (271) [2021-11-25 20:05:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1488 transitions. [2021-11-25 20:05:24,174 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1488 transitions. Word has length 135 [2021-11-25 20:05:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:24,174 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1488 transitions. [2021-11-25 20:05:24,175 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:05:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1488 transitions. [2021-11-25 20:05:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:05:24,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:24,182 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] [2021-11-25 20:05:24,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:05:24,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1838399742, now seen corresponding path program 1 times [2021-11-25 20:05:24,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31379019] [2021-11-25 20:05:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:24,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:05:24,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:24,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31379019] [2021-11-25 20:05:24,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31379019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:05:24,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822373731] [2021-11-25 20:05:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:24,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:05:24,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:05:24,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:05:24,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59341d62-2d02-4c56-b870-360922935551/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:05:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:24,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:05:24,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:05:24,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:05:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:05:25,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822373731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:05:25,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1706329597] [2021-11-25 20:05:25,199 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2021-11-25 20:05:25,200 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:05:25,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:05:25,201 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:05:25,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:05:46,756 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-25 20:05:47,709 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-25 20:05:48,939 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 272 for LOIs [2021-11-25 20:05:50,742 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2021-11-25 20:05:50,990 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-25 20:05:52,163 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2021-11-25 20:05:52,437 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 242 for LOIs [2021-11-25 20:05:52,496 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 272 for LOIs [2021-11-25 20:05:52,653 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 264 for LOIs [2021-11-25 20:05:52,782 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 262 for LOIs [2021-11-25 20:05:52,910 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 260 for LOIs [2021-11-25 20:05:56,828 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 447 for LOIs [2021-11-25 20:05:57,471 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 441 for LOIs [2021-11-25 20:05:58,092 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 439 for LOIs [2021-11-25 20:06:07,982 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 433 for LOIs [2021-11-25 20:06:10,263 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 431 for LOIs [2021-11-25 20:06:10,463 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 428 for LOIs [2021-11-25 20:06:10,662 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2021-11-25 20:06:10,712 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2021-11-25 20:06:12,159 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:07:20,938 WARN L227 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 720 DAG size of output: 508 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:07:28,398 WARN L227 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 717 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:08:00,623 WARN L227 SmtUtils]: Spent 17.75s on a formula simplification. DAG size of input: 576 DAG size of output: 449 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:08:08,380 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 553 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:08:15,028 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 551 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:08:20,468 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 546 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:08:31,719 WARN L227 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 474 DAG size of output: 251 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)