./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_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_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/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_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/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_1b0c75a2-894c-49e9-b16b-167079c7c944/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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- 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 02:11:27,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:11:27,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:11:27,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:11:27,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:11:27,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:11:27,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:11:27,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:11:27,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:11:27,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:11:27,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:11:27,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:11:27,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:11:27,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:11:27,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:11:27,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:11:27,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:11:27,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:11:27,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:11:27,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:11:27,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:11:27,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:11:27,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:11:27,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:11:27,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:11:27,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:11:27,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:11:27,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:11:27,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:11:27,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:11:27,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:11:27,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:11:27,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:11:27,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:11:27,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:11:27,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:11:27,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:11:27,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:11:27,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:11:27,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:11:27,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:11:27,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:11:27,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:11:27,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:11:27,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:11:27,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:11:27,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:11:27,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:11:27,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:11:27,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:11:27,494 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:11:27,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:11:27,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:11:27,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:11:27,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:11:27,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:11:27,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:11:27,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:11:27,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:11:27,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:11:27,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:11:27,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:11:27,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:11:27,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:11:27,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:11:27,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:11:27,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:11:27,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:11:27,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:11:27,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:11:27,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:11:27,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:11:27,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:11:27,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:11:27,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:27,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:11:27,511 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:11:27,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:11:27,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:11:27,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:11:27,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:11:27,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:11:27,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:11:27,513 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_1b0c75a2-894c-49e9-b16b-167079c7c944/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2022-11-22 02:11:27,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:11:27,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:11:27,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:11:27,867 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:11:27,867 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:11:27,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-22 02:11:30,850 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:11:31,304 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:11:31,305 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2022-11-22 02:11:31,323 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/data/58125acb6/2e40015e487a4feaaf2b36e30958137b/FLAGa4a2cd1de [2022-11-22 02:11:31,337 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/data/58125acb6/2e40015e487a4feaaf2b36e30958137b [2022-11-22 02:11:31,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:11:31,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:11:31,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:31,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:11:31,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:11:31,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:31" (1/1) ... [2022-11-22 02:11:31,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3e5e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:31, skipping insertion in model container [2022-11-22 02:11:31,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:11:31" (1/1) ... [2022-11-22 02:11:31,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:11:31,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:11:31,849 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_1b0c75a2-894c-49e9-b16b-167079c7c944/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-22 02:11:32,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:32,185 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:11:32,248 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_1b0c75a2-894c-49e9-b16b-167079c7c944/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2022-11-22 02:11:32,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:11:32,390 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:11:32,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32 WrapperNode [2022-11-22 02:11:32,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:11:32,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:32,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:11:32,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:11:32,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,514 INFO L138 Inliner]: procedures = 152, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1339 [2022-11-22 02:11:32,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:11:32,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:11:32,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:11:32,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:11:32,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:11:32,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:11:32,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:11:32,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:11:32,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (1/1) ... [2022-11-22 02:11:32,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:11:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:32,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:11:32,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:11:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-22 02:11:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-22 02:11:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-22 02:11:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-22 02:11:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-22 02:11:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-22 02:11:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-22 02:11:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-22 02:11:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-22 02:11:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-22 02:11:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-22 02:11:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-22 02:11:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-22 02:11:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-22 02:11:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-22 02:11:32,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-22 02:11:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-22 02:11:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-22 02:11:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-22 02:11:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-22 02:11:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-22 02:11:32,700 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-22 02:11:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-22 02:11:32,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-22 02:11:32,701 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-22 02:11:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-22 02:11:32,702 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-22 02:11:32,702 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-22 02:11:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-22 02:11:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-22 02:11:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-22 02:11:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-22 02:11:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-22 02:11:32,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-22 02:11:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-22 02:11:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-22 02:11:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-22 02:11:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-22 02:11:32,706 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-22 02:11:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-22 02:11:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-22 02:11:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-22 02:11:32,707 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-22 02:11:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-22 02:11:32,708 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-22 02:11:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-22 02:11:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-22 02:11:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:11:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-22 02:11:32,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-22 02:11:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-22 02:11:32,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-22 02:11:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-22 02:11:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-22 02:11:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-22 02:11:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-22 02:11:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-22 02:11:32,712 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-22 02:11:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-22 02:11:32,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-22 02:11:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-22 02:11:32,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-22 02:11:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-22 02:11:32,713 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-22 02:11:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-22 02:11:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-22 02:11:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-22 02:11:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-22 02:11:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-22 02:11:32,714 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-22 02:11:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-22 02:11:32,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-22 02:11:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-22 02:11:32,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-22 02:11:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-22 02:11:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-22 02:11:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-22 02:11:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-22 02:11:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-22 02:11:32,718 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-22 02:11:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:11:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-22 02:11:32,719 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-22 02:11:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-22 02:11:32,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-22 02:11:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-22 02:11:32,720 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-22 02:11:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-22 02:11:32,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-22 02:11:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:11:32,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:11:33,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:11:33,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:11:34,225 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:11:34,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:11:34,977 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:11:34,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:34 BoogieIcfgContainer [2022-11-22 02:11:34,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:11:34,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:11:34,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:11:34,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:11:34,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:11:31" (1/3) ... [2022-11-22 02:11:34,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a5bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:34, skipping insertion in model container [2022-11-22 02:11:34,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:11:32" (2/3) ... [2022-11-22 02:11:34,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a5bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:11:34, skipping insertion in model container [2022-11-22 02:11:34,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:11:34" (3/3) ... [2022-11-22 02:11:34,998 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2022-11-22 02:11:35,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:11:35,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:11:35,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:11:35,111 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;@137feed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:11:35,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:11:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-22 02:11:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-22 02:11:35,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:35,149 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, 1, 1, 1] [2022-11-22 02:11:35,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1875424870, now seen corresponding path program 1 times [2022-11-22 02:11:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977494934] [2022-11-22 02:11:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:35,617 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 02:11:35,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:35,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977494934] [2022-11-22 02:11:35,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977494934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:35,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:35,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:11:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182028301] [2022-11-22 02:11:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:35,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:11:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:11:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:11:35,668 INFO L87 Difference]: Start difference. First operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:11:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:35,915 INFO L93 Difference]: Finished difference Result 610 states and 828 transitions. [2022-11-22 02:11:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:11:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2022-11-22 02:11:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:35,941 INFO L225 Difference]: With dead ends: 610 [2022-11-22 02:11:35,941 INFO L226 Difference]: Without dead ends: 381 [2022-11-22 02:11:35,996 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 02:11:35,999 INFO L413 NwaCegarLoop]: 470 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, 470 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 02:11:36,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:11:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-22 02:11:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-22 02:11:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-22 02:11:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 519 transitions. [2022-11-22 02:11:36,103 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 519 transitions. Word has length 122 [2022-11-22 02:11:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:36,106 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 519 transitions. [2022-11-22 02:11:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:11:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 519 transitions. [2022-11-22 02:11:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-22 02:11:36,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:36,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:11:36,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1792078331, now seen corresponding path program 1 times [2022-11-22 02:11:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:36,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891115212] [2022-11-22 02:11:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:36,470 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 02:11:36,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891115212] [2022-11-22 02:11:36,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891115212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:36,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:36,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323517459] [2022-11-22 02:11:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:36,475 INFO L87 Difference]: Start difference. First operand 381 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:11:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:36,631 INFO L93 Difference]: Finished difference Result 606 states and 808 transitions. [2022-11-22 02:11:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 114 [2022-11-22 02:11:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:36,635 INFO L225 Difference]: With dead ends: 606 [2022-11-22 02:11:36,635 INFO L226 Difference]: Without dead ends: 383 [2022-11-22 02:11:36,637 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 02:11:36,638 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:36,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 933 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:11:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-22 02:11:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-11-22 02:11:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 246 states have internal predecessors, (298), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-22 02:11:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 521 transitions. [2022-11-22 02:11:36,660 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 521 transitions. Word has length 114 [2022-11-22 02:11:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:36,661 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 521 transitions. [2022-11-22 02:11:36,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:11:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 521 transitions. [2022-11-22 02:11:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-22 02:11:36,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:36,664 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 02:11:36,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:11:36,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 197624083, now seen corresponding path program 1 times [2022-11-22 02:11:36,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:36,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586535193] [2022-11-22 02:11:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:36,868 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 02:11:36,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586535193] [2022-11-22 02:11:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586535193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:36,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:36,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:11:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640612921] [2022-11-22 02:11:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:11:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:11:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:11:36,871 INFO L87 Difference]: Start difference. First operand 383 states and 521 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:11:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:37,081 INFO L93 Difference]: Finished difference Result 765 states and 1056 transitions. [2022-11-22 02:11:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:11:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 119 [2022-11-22 02:11:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:37,087 INFO L225 Difference]: With dead ends: 765 [2022-11-22 02:11:37,087 INFO L226 Difference]: Without dead ends: 450 [2022-11-22 02:11:37,091 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 02:11:37,094 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 84 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:37,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 950 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:11:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-22 02:11:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2022-11-22 02:11:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 296 states have internal predecessors, (375), 126 states have call successors, (126), 43 states have call predecessors, (126), 43 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-22 02:11:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 626 transitions. [2022-11-22 02:11:37,132 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 626 transitions. Word has length 119 [2022-11-22 02:11:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:37,133 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 626 transitions. [2022-11-22 02:11:37,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:11:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 626 transitions. [2022-11-22 02:11:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-22 02:11:37,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:37,145 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:11:37,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:11:37,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:37,147 INFO L85 PathProgramCache]: Analyzing trace with hash 567398175, now seen corresponding path program 1 times [2022-11-22 02:11:37,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:37,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249997612] [2022-11-22 02:11:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:37,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:11:37,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:37,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249997612] [2022-11-22 02:11:37,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249997612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:11:37,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121002602] [2022-11-22 02:11:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:37,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:11:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:11:37,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:11:37,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:11:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:37,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:11:37,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:11:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:11:37,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:11:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:11:38,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121002602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:11:38,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905309008] [2022-11-22 02:11:38,108 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-11-22 02:11:38,108 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:11:38,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:11:38,117 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:11:38,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:11:52,574 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-22 02:11:52,887 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:12:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1905309008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:12:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-22 02:12:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389530353] [2022-11-22 02:12:47,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-22 02:12:47,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-22 02:12:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-22 02:12:47,423 INFO L87 Difference]: Start difference. First operand 445 states and 626 transitions. Second operand has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-22 02:12:54,447 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:01,545 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:08,778 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:16,043 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:23,329 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:30,616 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:37,901 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:45,172 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:56,722 INFO L93 Difference]: Finished difference Result 903 states and 1259 transitions. [2022-11-22 02:13:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 02:13:56,723 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 129 [2022-11-22 02:13:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:56,725 INFO L225 Difference]: With dead ends: 903 [2022-11-22 02:13:56,725 INFO L226 Difference]: Without dead ends: 475 [2022-11-22 02:13:56,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 119.6s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 02:13:56,728 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 136 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:56,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1175 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 02:13:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-22 02:13:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2022-11-22 02:13:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 311 states have internal predecessors, (389), 126 states have call successors, (126), 50 states have call predecessors, (126), 50 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2022-11-22 02:13:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 640 transitions. [2022-11-22 02:13:56,837 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 640 transitions. Word has length 129 [2022-11-22 02:13:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:56,837 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 640 transitions. [2022-11-22 02:13:56,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-22 02:13:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 640 transitions. [2022-11-22 02:13:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-22 02:13:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:56,841 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, 1, 1, 1, 1, 1] [2022-11-22 02:13:56,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:57,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-22 02:13:57,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1532918332, now seen corresponding path program 1 times [2022-11-22 02:13:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625853757] [2022-11-22 02:13:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:57,198 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 02:13:57,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:57,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625853757] [2022-11-22 02:13:57,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625853757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:57,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857574065] [2022-11-22 02:13:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:57,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:57,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:57,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:13:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:57,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:13:57,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:57,720 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 02:13:57,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:13:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857574065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:13:57,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:13:57,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:13:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93855685] [2022-11-22 02:13:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:13:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:13:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:13:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:13:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:13:57,723 INFO L87 Difference]: Start difference. First operand 467 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:13:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:57,933 INFO L93 Difference]: Finished difference Result 679 states and 928 transitions. [2022-11-22 02:13:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:13:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 124 [2022-11-22 02:13:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:57,937 INFO L225 Difference]: With dead ends: 679 [2022-11-22 02:13:57,937 INFO L226 Difference]: Without dead ends: 463 [2022-11-22 02:13:57,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 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 02:13:57,939 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 421 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:57,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 452 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:13:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-22 02:13:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-11-22 02:13:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 289 states have (on average 1.3321799307958477) internal successors, (385), 308 states have internal predecessors, (385), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-22 02:13:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 630 transitions. [2022-11-22 02:13:58,075 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 630 transitions. Word has length 124 [2022-11-22 02:13:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:13:58,076 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 630 transitions. [2022-11-22 02:13:58,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:13:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 630 transitions. [2022-11-22 02:13:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 02:13:58,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:13:58,080 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:13:58,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:13:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:58,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:13:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:13:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1264978221, now seen corresponding path program 1 times [2022-11-22 02:13:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:13:58,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611537658] [2022-11-22 02:13:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:13:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:13:58,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:13:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611537658] [2022-11-22 02:13:58,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611537658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:13:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418337728] [2022-11-22 02:13:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:13:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:13:58,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:13:58,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:13:58,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:13:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:13:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:13:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:13:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:13:58,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:13:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:13:58,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418337728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:13:58,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222041287] [2022-11-22 02:13:58,964 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2022-11-22 02:13:58,964 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:13:58,965 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:13:58,965 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:13:58,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:14:12,731 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-22 02:14:13,042 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:15:09,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1222041287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:09,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:15:09,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-22 02:15:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422403465] [2022-11-22 02:15:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:09,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:15:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:15:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-22 02:15:09,056 INFO L87 Difference]: Start difference. First operand 463 states and 630 transitions. Second operand has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-22 02:15:16,170 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:23,334 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:30,586 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:37,833 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:45,089 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:52,364 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:59,626 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:16:06,866 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:16:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:12,198 INFO L93 Difference]: Finished difference Result 875 states and 1198 transitions. [2022-11-22 02:16:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-22 02:16:12,199 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) Word has length 133 [2022-11-22 02:16:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:12,202 INFO L225 Difference]: With dead ends: 875 [2022-11-22 02:16:12,202 INFO L226 Difference]: Without dead ends: 455 [2022-11-22 02:16:12,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 02:16:12,205 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 44 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:12,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3322 Invalid, 1253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:16:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-22 02:16:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-11-22 02:16:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 281 states have (on average 1.3202846975088969) internal successors, (371), 300 states have internal predecessors, (371), 123 states have call successors, (123), 50 states have call predecessors, (123), 50 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-22 02:16:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 616 transitions. [2022-11-22 02:16:12,290 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 616 transitions. Word has length 133 [2022-11-22 02:16:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 616 transitions. [2022-11-22 02:16:12,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 states have internal predecessors, (68), 9 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (24), 9 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-22 02:16:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 616 transitions. [2022-11-22 02:16:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 02:16:12,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:12,294 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:16:12,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:16:12,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:12,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1639422148, now seen corresponding path program 1 times [2022-11-22 02:16:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352098374] [2022-11-22 02:16:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-22 02:16:12,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352098374] [2022-11-22 02:16:12,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352098374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:12,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:12,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67339294] [2022-11-22 02:16:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:12,614 INFO L87 Difference]: Start difference. First operand 455 states and 616 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:16:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:12,827 INFO L93 Difference]: Finished difference Result 855 states and 1166 transitions. [2022-11-22 02:16:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 135 [2022-11-22 02:16:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:12,832 INFO L225 Difference]: With dead ends: 855 [2022-11-22 02:16:12,832 INFO L226 Difference]: Without dead ends: 452 [2022-11-22 02:16:12,834 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 02:16:12,835 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 449 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 448 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 02:16:12,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 448 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:16:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-22 02:16:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-22 02:16:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 293 states have internal predecessors, (353), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (119), 118 states have call predecessors, (119), 119 states have call successors, (119) [2022-11-22 02:16:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 592 transitions. [2022-11-22 02:16:12,943 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 592 transitions. Word has length 135 [2022-11-22 02:16:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:12,944 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 592 transitions. [2022-11-22 02:16:12,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-22 02:16:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 592 transitions. [2022-11-22 02:16:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-22 02:16:12,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:12,947 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:12,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:16:12,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:12,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash -212878243, now seen corresponding path program 1 times [2022-11-22 02:16:12,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:12,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663294168] [2022-11-22 02:16:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:12,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:16:13,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:13,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663294168] [2022-11-22 02:16:13,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663294168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:16:13,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120846729] [2022-11-22 02:16:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:13,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:13,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:13,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:13,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:16:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:13,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:16:13,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:16:13,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:16:13,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120846729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:13,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:16:13,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:16:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390190105] [2022-11-22 02:16:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:13,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:13,631 INFO L87 Difference]: Start difference. First operand 452 states and 592 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-22 02:16:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:13,971 INFO L93 Difference]: Finished difference Result 1258 states and 1695 transitions. [2022-11-22 02:16:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:13,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 147 [2022-11-22 02:16:13,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:13,977 INFO L225 Difference]: With dead ends: 1258 [2022-11-22 02:16:13,977 INFO L226 Difference]: Without dead ends: 851 [2022-11-22 02:16:13,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 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 02:16:13,979 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 954 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 02:16:13,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 954 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:16:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-22 02:16:14,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 849. [2022-11-22 02:16:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 531 states have (on average 1.2598870056497176) internal successors, (669), 551 states have internal predecessors, (669), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-22 02:16:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1131 transitions. [2022-11-22 02:16:14,131 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1131 transitions. Word has length 147 [2022-11-22 02:16:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:14,131 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1131 transitions. [2022-11-22 02:16:14,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-22 02:16:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1131 transitions. [2022-11-22 02:16:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-22 02:16:14,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:14,136 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:14,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:16:14,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:14,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1125238850, now seen corresponding path program 1 times [2022-11-22 02:16:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:14,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378489263] [2022-11-22 02:16:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:14,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:16:14,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378489263] [2022-11-22 02:16:14,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378489263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:16:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607536371] [2022-11-22 02:16:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:14,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:14,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:16:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:14,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:16:14,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:16:14,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:16:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:16:15,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607536371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:16:15,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1471218118] [2022-11-22 02:16:15,053 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-22 02:16:15,053 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:16:15,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:16:15,054 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:16:15,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:16:27,633 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-22 02:16:28,004 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:17:31,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1471218118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:31,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:17:31,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-22 02:17:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725105596] [2022-11-22 02:17:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:31,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 02:17:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 02:17:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:17:31,480 INFO L87 Difference]: Start difference. First operand 849 states and 1131 transitions. Second operand has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-22 02:17:38,581 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 629 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:17:45,767 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 628 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:17:53,050 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 627 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:00,360 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 626 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:07,627 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 625 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:14,886 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 624 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:22,175 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 623 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:29,474 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 622 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:18:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:31,662 INFO L93 Difference]: Finished difference Result 1651 states and 2209 transitions. [2022-11-22 02:18:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 02:18:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 148 [2022-11-22 02:18:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:31,667 INFO L225 Difference]: With dead ends: 1651 [2022-11-22 02:18:31,668 INFO L226 Difference]: Without dead ends: 848 [2022-11-22 02:18:31,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 119.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 02:18:31,671 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 79 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:31,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1478 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 02:18:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-11-22 02:18:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2022-11-22 02:18:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 530 states have (on average 1.2547169811320755) internal successors, (665), 550 states have internal predecessors, (665), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (237), 222 states have call predecessors, (237), 223 states have call successors, (237) [2022-11-22 02:18:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1127 transitions. [2022-11-22 02:18:31,819 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1127 transitions. Word has length 148 [2022-11-22 02:18:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:31,820 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1127 transitions. [2022-11-22 02:18:31,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-22 02:18:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1127 transitions. [2022-11-22 02:18:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-22 02:18:31,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:31,824 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:31,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:18:32,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:32,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:18:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash 5200269, now seen corresponding path program 1 times [2022-11-22 02:18:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444295097] [2022-11-22 02:18:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:32,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:18:32,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444295097] [2022-11-22 02:18:32,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444295097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:18:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880352145] [2022-11-22 02:18:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:18:32,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:18:32,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:18:32,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b0c75a2-894c-49e9-b16b-167079c7c944/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:18:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:32,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:18:32,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:18:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:18:32,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:18:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-22 02:18:32,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880352145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:18:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563178914] [2022-11-22 02:18:32,722 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2022-11-22 02:18:32,722 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:18:32,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:18:32,723 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:18:32,723 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:20:41,191 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 511 for LOIs [2022-11-22 02:20:42,290 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 517 for LOIs [2022-11-22 02:20:43,823 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 281 for LOIs [2022-11-22 02:20:45,645 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 463 for LOIs [2022-11-22 02:20:45,945 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 452 for LOIs [2022-11-22 02:20:48,274 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2022-11-22 02:20:48,566 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 249 for LOIs [2022-11-22 02:20:48,631 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-22 02:20:48,935 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 283 for LOIs [2022-11-22 02:20:49,091 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 271 for LOIs [2022-11-22 02:20:49,222 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 269 for LOIs [2022-11-22 02:20:54,463 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 454 for LOIs [2022-11-22 02:21:03,086 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-22 02:21:08,121 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 254 for LOIs [2022-11-22 02:21:08,162 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 252 for LOIs [2022-11-22 02:21:08,234 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 444 for LOIs [2022-11-22 02:21:08,814 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:22:19,538 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 530 DAG size of output: 522 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:26,767 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 534 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:51,957 WARN L233 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 751 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:15,095 WARN L233 SmtUtils]: Spent 13.14s on a formula simplification. DAG size of input: 740 DAG size of output: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:27,139 WARN L233 SmtUtils]: Spent 11.06s on a formula simplification. DAG size of input: 746 DAG size of output: 569 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:36,287 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 750 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:10,366 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 516 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:17,896 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 560 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:24,974 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 562 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:37,195 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 561 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:45,891 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 561 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:54,788 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 468 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:25:02,237 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 490 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)