./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba --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 a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:20:26,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:20:26,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:20:26,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:20:26,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:20:26,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:20:26,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:20:26,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:20:26,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:20:26,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:20:26,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:20:26,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:20:26,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:20:26,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:20:26,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:20:26,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:20:26,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:20:26,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:20:26,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:20:26,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:20:26,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:20:26,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:20:26,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:20:26,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:20:26,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:20:26,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:20:26,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:20:26,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:20:26,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:20:26,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:20:26,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:20:26,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:20:26,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:20:26,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:20:26,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:20:26,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:20:26,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:20:26,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:20:26,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:20:26,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:20:26,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:20:26,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:20:26,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:20:26,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:20:26,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:20:26,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:20:26,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:20:26,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:20:26,322 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:20:26,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:20:26,323 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:20:26,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:20:26,324 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:20:26,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:20:26,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:20:26,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:20:26,325 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:20:26,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:20:26,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:20:26,326 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:20:26,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:20:26,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:20:26,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:20:26,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:20:26,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:20:26,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:20:26,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:20:26,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:20:26,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:20:26,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:20:26,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:20:26,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:20:26,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:20:26,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:20:26,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:26,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:20:26,332 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:20:26,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:20:26,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:20:26,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:20:26,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:20:26,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:20:26,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:20:26,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2022-11-22 01:20:26,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:20:26,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:20:26,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:20:26,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:20:26,648 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:20:26,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-22 01:20:29,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:20:30,010 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:20:30,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-22 01:20:30,049 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/data/ccdf2f416/3146f1166b0e4cd896c46e06a808e9c9/FLAG085a74fd2 [2022-11-22 01:20:30,069 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/data/ccdf2f416/3146f1166b0e4cd896c46e06a808e9c9 [2022-11-22 01:20:30,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:20:30,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:20:30,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:30,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:20:30,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:20:30,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:30" (1/1) ... [2022-11-22 01:20:30,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e3bdbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:30, skipping insertion in model container [2022-11-22 01:20:30,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:30" (1/1) ... [2022-11-22 01:20:30,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:20:30,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:20:30,700 WARN L237 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_bc56ca43-a5da-4780-8b8c-7f3456dd605f/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-22 01:20:30,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:30,935 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:20:31,035 WARN L237 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_bc56ca43-a5da-4780-8b8c-7f3456dd605f/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-22 01:20:31,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:31,172 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:20:31,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31 WrapperNode [2022-11-22 01:20:31,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:31,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:31,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:20:31,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:20:31,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,295 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-11-22 01:20:31,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:31,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:20:31,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:20:31,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:20:31,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:20:31,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:20:31,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:20:31,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:20:31,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (1/1) ... [2022-11-22 01:20:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:31,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:20:31,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:20:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-22 01:20:31,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-22 01:20:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-22 01:20:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-22 01:20:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-22 01:20:31,527 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-22 01:20:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-22 01:20:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-22 01:20:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-22 01:20:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-22 01:20:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-22 01:20:31,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-22 01:20:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-22 01:20:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-22 01:20:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-22 01:20:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-22 01:20:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-22 01:20:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-22 01:20:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-22 01:20:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-22 01:20:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-22 01:20:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-22 01:20:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-22 01:20:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-22 01:20:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-22 01:20:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-22 01:20:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-22 01:20:31,533 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-22 01:20:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-22 01:20:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-22 01:20:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-22 01:20:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-22 01:20:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-22 01:20:31,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-22 01:20:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-22 01:20:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-22 01:20:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-22 01:20:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-22 01:20:31,537 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-22 01:20:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-22 01:20:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-22 01:20:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-22 01:20:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-22 01:20:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-22 01:20:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-22 01:20:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-22 01:20:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-22 01:20:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:20:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-22 01:20:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-22 01:20:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-22 01:20:31,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-22 01:20:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-22 01:20:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-22 01:20:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-22 01:20:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-22 01:20:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-22 01:20:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-22 01:20:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-22 01:20:31,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-22 01:20:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-22 01:20:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-22 01:20:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-22 01:20:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-22 01:20:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-22 01:20:31,544 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-22 01:20:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-22 01:20:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-22 01:20:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-22 01:20:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-22 01:20:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-22 01:20:31,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-22 01:20:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-22 01:20:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-22 01:20:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-22 01:20:31,546 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-22 01:20:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-22 01:20:31,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-22 01:20:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-22 01:20:31,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-22 01:20:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:20:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-22 01:20:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-22 01:20:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-22 01:20:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-22 01:20:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-22 01:20:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-22 01:20:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-22 01:20:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-22 01:20:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:20:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:20:31,896 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:20:31,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:20:33,134 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:20:33,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:20:33,847 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:20:33,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:33 BoogieIcfgContainer [2022-11-22 01:20:33,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:20:33,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:20:33,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:20:33,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:20:33,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:30" (1/3) ... [2022-11-22 01:20:33,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638d9f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:33, skipping insertion in model container [2022-11-22 01:20:33,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:31" (2/3) ... [2022-11-22 01:20:33,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638d9f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:33, skipping insertion in model container [2022-11-22 01:20:33,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:33" (3/3) ... [2022-11-22 01:20:33,860 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2022-11-22 01:20:33,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:20:33,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:20:33,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:20:33,969 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78c238f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:20:33,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:20:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-22 01:20:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 01:20:33,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:33,992 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:20:33,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2022-11-22 01:20:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:34,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139205172] [2022-11-22 01:20:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:34,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:34,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:34,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139205172] [2022-11-22 01:20:34,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139205172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:34,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:34,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:20:34,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80425457] [2022-11-22 01:20:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:34,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:20:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:20:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:20:34,509 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:34,784 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-11-22 01:20:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:20:34,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-11-22 01:20:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:34,801 INFO L225 Difference]: With dead ends: 602 [2022-11-22 01:20:34,802 INFO L226 Difference]: Without dead ends: 377 [2022-11-22 01:20:34,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:20:34,811 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:34,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:20:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-22 01:20:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-22 01:20:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-22 01:20:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-11-22 01:20:34,885 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-11-22 01:20:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:34,887 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-11-22 01:20:34,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-11-22 01:20:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 01:20:34,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:34,893 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:20:34,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:20:34,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2022-11-22 01:20:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:34,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261220438] [2022-11-22 01:20:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:35,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:35,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261220438] [2022-11-22 01:20:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261220438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:35,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:35,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509534608] [2022-11-22 01:20:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:35,156 INFO L87 Difference]: Start difference. First operand 377 states and 513 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:35,431 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-11-22 01:20:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:35,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2022-11-22 01:20:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:35,444 INFO L225 Difference]: With dead ends: 598 [2022-11-22 01:20:35,444 INFO L226 Difference]: Without dead ends: 379 [2022-11-22 01:20:35,451 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:20:35,455 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:35,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:20:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-22 01:20:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-11-22 01:20:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-22 01:20:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-11-22 01:20:35,517 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-11-22 01:20:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:35,518 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-11-22 01:20:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-11-22 01:20:35,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 01:20:35,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:35,523 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:20:35,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:20:35,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2022-11-22 01:20:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:35,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004795847] [2022-11-22 01:20:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:35,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004795847] [2022-11-22 01:20:35,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004795847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:35,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:20:35,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:20:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906355906] [2022-11-22 01:20:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:35,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:20:35,677 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:35,875 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-11-22 01:20:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-11-22 01:20:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:35,881 INFO L225 Difference]: With dead ends: 757 [2022-11-22 01:20:35,881 INFO L226 Difference]: Without dead ends: 446 [2022-11-22 01:20:35,884 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:20:35,885 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:35,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:20:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-22 01:20:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-11-22 01:20:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-22 01:20:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-11-22 01:20:35,914 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-11-22 01:20:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:35,914 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-11-22 01:20:35,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:20:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-11-22 01:20:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 01:20:35,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:35,918 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:20:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:20:35,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2022-11-22 01:20:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:35,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131733316] [2022-11-22 01:20:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:35,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:36,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131733316] [2022-11-22 01:20:36,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131733316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:20:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173667025] [2022-11-22 01:20:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:36,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:20:36,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:36,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:20:36,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:20:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:36,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:20:36,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:20:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:20:36,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:20:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173667025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:20:36,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:20:36,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:20:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020271838] [2022-11-22 01:20:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:20:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:20:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:20:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:20:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:20:36,872 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:20:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:20:37,020 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-11-22 01:20:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:20:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2022-11-22 01:20:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:20:37,024 INFO L225 Difference]: With dead ends: 859 [2022-11-22 01:20:37,024 INFO L226 Difference]: Without dead ends: 439 [2022-11-22 01:20:37,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:20:37,027 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:20:37,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:20:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-22 01:20:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-22 01:20:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-22 01:20:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-11-22 01:20:37,067 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-11-22 01:20:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:20:37,067 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-11-22 01:20:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:20:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-11-22 01:20:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 01:20:37,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:20:37,072 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:20:37,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:20:37,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:20:37,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:20:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:20:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2022-11-22 01:20:37,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:20:37,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64034783] [2022-11-22 01:20:37,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:37,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:20:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:37,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:20:37,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64034783] [2022-11-22 01:20:37,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64034783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:20:37,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085373492] [2022-11-22 01:20:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:20:37,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:20:37,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:37,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:20:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:20:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:20:37,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:20:37,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:20:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:37,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:20:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:20:38,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085373492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:20:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359704555] [2022-11-22 01:20:38,137 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-22 01:20:38,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:20:38,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:20:38,148 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:20:38,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:20:52,815 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-22 01:20:53,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:21:01,297 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:21:07,239 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:21:50,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [359704555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:50,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:21:50,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-22 01:21:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730262492] [2022-11-22 01:21:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 01:21:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 01:21:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:21:50,390 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-22 01:21:58,554 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:06,810 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:15,155 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:23,523 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:31,928 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:40,359 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:48,826 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:22:57,286 WARN L233 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:23:12,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:23:12,036 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-11-22 01:23:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 01:23:12,036 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2022-11-22 01:23:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:23:12,039 INFO L225 Difference]: With dead ends: 874 [2022-11-22 01:23:12,040 INFO L226 Difference]: Without dead ends: 467 [2022-11-22 01:23:12,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 131.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 01:23:12,049 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 118 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:23:12,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2557 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 01:23:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-22 01:23:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-11-22 01:23:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-22 01:23:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-11-22 01:23:12,174 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-11-22 01:23:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:23:12,174 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-11-22 01:23:12,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-22 01:23:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-11-22 01:23:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-22 01:23:12,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:23:12,177 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:23:12,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:23:12,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:12,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:23:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:23:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2022-11-22 01:23:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:23:12,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748280479] [2022-11-22 01:23:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:23:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:23:12,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:23:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748280479] [2022-11-22 01:23:12,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748280479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:23:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234392084] [2022-11-22 01:23:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:23:12,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:23:12,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:23:12,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:23:12,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:23:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:23:12,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:23:12,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:23:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:23:12,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:23:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-22 01:23:13,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234392084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:23:13,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222365892] [2022-11-22 01:23:13,042 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-22 01:23:13,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:23:13,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:23:13,043 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:23:13,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:23:25,217 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-22 01:23:25,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:23:33,219 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:23:39,155 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:24:24,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [222365892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:24:24,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:24:24,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-22 01:24:24,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821471056] [2022-11-22 01:24:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:24:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:24:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:24:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:24:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:24:24,872 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-22 01:24:33,144 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:24:41,461 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:24:49,863 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:24:58,206 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:25:06,571 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:25:14,961 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:25:23,379 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:25:31,818 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:25:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:38,535 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-11-22 01:25:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-22 01:25:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2022-11-22 01:25:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:38,539 INFO L225 Difference]: With dead ends: 867 [2022-11-22 01:25:38,539 INFO L226 Difference]: Without dead ends: 451 [2022-11-22 01:25:38,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 124.7s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:25:38,542 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 42 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:38,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3980 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-22 01:25:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-22 01:25:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-22 01:25:38,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-22 01:25:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-11-22 01:25:38,645 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-11-22 01:25:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:38,645 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-11-22 01:25:38,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-22 01:25:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-11-22 01:25:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-22 01:25:38,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:38,648 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:25:38,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:25:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:25:38,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2022-11-22 01:25:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:38,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127070384] [2022-11-22 01:25:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:38,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 01:25:38,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:38,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127070384] [2022-11-22 01:25:38,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127070384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:38,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:25:38,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:25:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857969820] [2022-11-22 01:25:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:38,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:38,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:25:38,969 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:25:39,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:39,191 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-11-22 01:25:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:39,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-11-22 01:25:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:39,195 INFO L225 Difference]: With dead ends: 847 [2022-11-22 01:25:39,195 INFO L226 Difference]: Without dead ends: 448 [2022-11-22 01:25:39,196 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:25:39,199 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:25:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-22 01:25:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-22 01:25:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-22 01:25:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-11-22 01:25:39,315 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-11-22 01:25:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:39,316 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-11-22 01:25:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-22 01:25:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-11-22 01:25:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:25:39,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:39,319 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:39,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:25:39,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:39,320 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2022-11-22 01:25:39,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:39,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454565636] [2022-11-22 01:25:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:25:39,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:39,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454565636] [2022-11-22 01:25:39,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454565636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:25:39,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199865203] [2022-11-22 01:25:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:39,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:25:39,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:25:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:39,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:25:39,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:25:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:25:40,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:25:40,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199865203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:25:40,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:25:40,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 01:25:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774703891] [2022-11-22 01:25:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:25:40,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:25:40,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:25:40,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:25:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:40,009 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 01:25:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:25:40,340 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-11-22 01:25:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:25:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2022-11-22 01:25:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:25:40,346 INFO L225 Difference]: With dead ends: 1246 [2022-11-22 01:25:40,346 INFO L226 Difference]: Without dead ends: 843 [2022-11-22 01:25:40,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:25:40,349 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:25:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:25:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-22 01:25:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-22 01:25:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-22 01:25:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-11-22 01:25:40,505 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-11-22 01:25:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:25:40,506 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-11-22 01:25:40,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 01:25:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-11-22 01:25:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 01:25:40,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:25:40,510 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:25:40,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:25:40,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:40,717 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:25:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:25:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2022-11-22 01:25:40,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:25:40,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569522455] [2022-11-22 01:25:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:25:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:25:40,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:25:40,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569522455] [2022-11-22 01:25:40,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569522455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:25:40,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187522800] [2022-11-22 01:25:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:25:40,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:25:40,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:25:40,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:25:40,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:25:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:25:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:25:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:25:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:25:41,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:25:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:25:41,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187522800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:25:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309292322] [2022-11-22 01:25:41,421 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-22 01:25:41,421 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:25:41,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:25:41,422 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:25:41,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:25:53,297 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-22 01:25:53,577 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:26:01,254 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:26:07,111 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:26:59,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [309292322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:26:59,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:26:59,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-22 01:26:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131970793] [2022-11-22 01:26:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:26:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 01:26:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:26:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 01:26:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:26:59,836 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-22 01:27:07,976 WARN L233 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:16,198 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:24,542 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:32,891 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:41,300 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:49,717 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:27:58,166 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:28:06,560 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:28:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:28:09,724 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-11-22 01:28:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 01:28:09,725 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2022-11-22 01:28:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:28:09,729 INFO L225 Difference]: With dead ends: 1635 [2022-11-22 01:28:09,729 INFO L226 Difference]: Without dead ends: 840 [2022-11-22 01:28:09,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 131.5s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:28:09,733 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 89 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:28:09,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1804 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 01:28:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-22 01:28:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-11-22 01:28:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-22 01:28:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-11-22 01:28:09,862 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-11-22 01:28:09,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:28:09,862 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-11-22 01:28:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-22 01:28:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-11-22 01:28:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 01:28:09,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:28:09,866 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:28:09,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:28:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:28:10,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:28:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:28:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2131341341, now seen corresponding path program 1 times [2022-11-22 01:28:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:28:10,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381905149] [2022-11-22 01:28:10,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:10,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:28:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:28:10,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:28:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381905149] [2022-11-22 01:28:10,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381905149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:28:10,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315721302] [2022-11-22 01:28:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:28:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:28:10,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:28:10,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:28:10,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc56ca43-a5da-4780-8b8c-7f3456dd605f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:28:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:28:10,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:28:10,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:28:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:28:10,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:28:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:28:10,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315721302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:28:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230381645] [2022-11-22 01:28:10,770 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-22 01:28:10,775 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:28:10,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:28:10,776 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:28:10,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:30:07,663 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-22 01:30:08,790 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-22 01:30:10,339 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-11-22 01:30:12,300 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-22 01:30:12,632 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-22 01:30:13,423 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 445 for LOIs [2022-11-22 01:30:13,703 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-11-22 01:30:13,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-22 01:30:14,105 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2022-11-22 01:30:14,275 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-11-22 01:30:14,428 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2022-11-22 01:30:19,958 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2022-11-22 01:30:24,471 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-22 01:30:26,398 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2022-11-22 01:30:26,478 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-22 01:30:26,517 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:30:34,552 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:30:40,323 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:31:43,075 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 533 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:31:58,595 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 468 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:32:08,340 WARN L233 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 750 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:32:27,534 WARN L233 SmtUtils]: Spent 11.72s on a formula simplification. DAG size of input: 739 DAG size of output: 555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:32:37,848 WARN L233 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 745 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:32:46,123 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 749 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:07,431 WARN L233 SmtUtils]: Spent 6.98s on a formula simplification. DAG size of input: 516 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:14,108 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 560 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:20,384 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 562 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:28,180 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 562 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:34,750 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 563 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:41,340 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 567 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:33:59,835 WARN L233 SmtUtils]: Spent 13.48s on a formula simplification. DAG size of input: 468 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)