./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 05:27:21,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 05:27:21,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 05:27:21,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 05:27:21,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 05:27:21,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 05:27:21,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 05:27:21,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 05:27:21,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 05:27:21,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 05:27:21,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 05:27:21,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 05:27:21,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 05:27:21,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 05:27:21,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 05:27:21,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 05:27:21,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 05:27:21,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 05:27:21,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 05:27:21,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 05:27:21,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 05:27:21,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 05:27:21,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 05:27:21,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 05:27:21,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 05:27:21,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 05:27:21,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 05:27:21,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 05:27:21,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 05:27:21,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 05:27:21,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 05:27:21,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 05:27:21,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 05:27:21,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 05:27:21,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 05:27:21,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 05:27:21,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 05:27:21,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 05:27:21,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 05:27:21,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 05:27:21,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 05:27:21,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 05:27:21,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 05:27:21,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 05:27:21,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 05:27:21,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 05:27:21,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 05:27:21,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 05:27:21,701 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 05:27:21,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 05:27:21,702 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 05:27:21,702 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 05:27:21,702 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 05:27:21,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 05:27:21,703 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 05:27:21,703 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 05:27:21,703 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 05:27:21,704 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 05:27:21,704 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 05:27:21,704 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 05:27:21,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 05:27:21,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 05:27:21,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 05:27:21,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 05:27:21,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 05:27:21,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 05:27:21,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 05:27:21,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 05:27:21,707 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 05:27:21,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 05:27:21,708 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 05:27:21,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 05:27:21,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 05:27:21,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 05:27:21,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:27:21,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 05:27:21,710 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 05:27:21,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 05:27:21,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 05:27:21,710 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 05:27:21,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 05:27:21,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 05:27:21,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 05:27:21,711 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_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2022-11-19 05:27:22,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 05:27:22,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 05:27:22,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 05:27:22,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 05:27:22,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 05:27:22,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-19 05:27:22,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/data/270218b8b/6f67e2ea3495403992f81ff4f3628bb1/FLAGfb2ee4726 [2022-11-19 05:27:22,876 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 05:27:22,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-19 05:27:22,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/data/270218b8b/6f67e2ea3495403992f81ff4f3628bb1/FLAGfb2ee4726 [2022-11-19 05:27:23,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/data/270218b8b/6f67e2ea3495403992f81ff4f3628bb1 [2022-11-19 05:27:23,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 05:27:23,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 05:27:23,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 05:27:23,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 05:27:23,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 05:27:23,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:23" (1/1) ... [2022-11-19 05:27:23,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67453035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:23, skipping insertion in model container [2022-11-19 05:27:23,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:27:23" (1/1) ... [2022-11-19 05:27:23,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 05:27:23,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 05:27:23,803 WARN L234 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_9232509a-432d-42e7-a752-f11ae96e7c0e/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-19 05:27:24,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:27:24,038 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 05:27:24,132 WARN L234 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_9232509a-432d-42e7-a752-f11ae96e7c0e/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-19 05:27:24,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 05:27:24,267 INFO L208 MainTranslator]: Completed translation [2022-11-19 05:27:24,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24 WrapperNode [2022-11-19 05:27:24,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 05:27:24,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 05:27:24,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 05:27:24,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 05:27:24,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,415 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-11-19 05:27:24,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 05:27:24,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 05:27:24,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 05:27:24,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 05:27:24,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 05:27:24,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 05:27:24,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 05:27:24,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 05:27:24,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (1/1) ... [2022-11-19 05:27:24,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 05:27:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:27:24,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 05:27:24,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 05:27:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 05:27:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 05:27:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-19 05:27:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-19 05:27:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-19 05:27:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-19 05:27:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 05:27:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 05:27:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 05:27:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 05:27:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 05:27:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 05:27:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 05:27:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 05:27:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-19 05:27:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-19 05:27:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 05:27:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 05:27:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-19 05:27:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-19 05:27:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 05:27:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 05:27:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 05:27:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 05:27:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 05:27:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 05:27:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-19 05:27:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-19 05:27:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-19 05:27:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-19 05:27:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 05:27:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 05:27:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 05:27:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 05:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 05:27:24,601 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 05:27:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 05:27:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-19 05:27:24,601 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-19 05:27:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 05:27:24,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 05:27:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 05:27:24,602 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 05:27:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 05:27:24,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 05:27:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-19 05:27:24,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-19 05:27:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 05:27:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 05:27:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 05:27:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 05:27:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 05:27:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-19 05:27:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-19 05:27:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-19 05:27:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-19 05:27:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-19 05:27:24,607 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-19 05:27:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 05:27:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 05:27:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 05:27:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 05:27:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 05:27:24,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 05:27:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 05:27:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 05:27:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 05:27:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 05:27:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 05:27:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 05:27:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 05:27:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 05:27:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-19 05:27:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-19 05:27:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-19 05:27:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-19 05:27:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 05:27:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 05:27:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 05:27:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 05:27:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 05:27:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 05:27:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 05:27:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-19 05:27:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-19 05:27:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-19 05:27:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-19 05:27:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 05:27:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 05:27:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 05:27:24,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 05:27:24,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 05:27:24,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 05:27:26,289 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 05:27:27,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 05:27:27,041 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 05:27:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:27:27 BoogieIcfgContainer [2022-11-19 05:27:27,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 05:27:27,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 05:27:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 05:27:27,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 05:27:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:27:23" (1/3) ... [2022-11-19 05:27:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515f2a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:27:27, skipping insertion in model container [2022-11-19 05:27:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:27:24" (2/3) ... [2022-11-19 05:27:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515f2a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:27:27, skipping insertion in model container [2022-11-19 05:27:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:27:27" (3/3) ... [2022-11-19 05:27:27,058 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2022-11-19 05:27:27,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 05:27:27,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 05:27:27,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 05:27:27,181 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;@33e57f5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 05:27:27,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 05:27:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-19 05:27:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 05:27:27,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:27:27,224 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:27:27,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:27:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:27:27,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2022-11-19 05:27:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:27:27,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289928531] [2022-11-19 05:27:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:27:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:27,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:27:27,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289928531] [2022-11-19 05:27:27,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289928531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:27:27,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:27:27,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 05:27:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467174625] [2022-11-19 05:27:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:27:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 05:27:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:27:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 05:27:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 05:27:27,848 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:27:28,114 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-11-19 05:27:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 05:27:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-11-19 05:27:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:27:28,144 INFO L225 Difference]: With dead ends: 602 [2022-11-19 05:27:28,144 INFO L226 Difference]: Without dead ends: 377 [2022-11-19 05:27:28,151 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 [2022-11-19 05:27:28,154 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:27:28,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:27:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-19 05:27:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-19 05:27:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-19 05:27:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-11-19 05:27:28,232 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-11-19 05:27:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:27:28,234 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-11-19 05:27:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-11-19 05:27:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-19 05:27:28,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:27:28,240 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:27:28,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 05:27:28,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:27:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:27:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2022-11-19 05:27:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:27:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682004921] [2022-11-19 05:27:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:27:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:28,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:27:28,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682004921] [2022-11-19 05:27:28,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682004921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:27:28,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:27:28,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 05:27:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47857268] [2022-11-19 05:27:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:27:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 05:27:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:27:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 05:27:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 05:27:28,674 INFO L87 Difference]: Start difference. First operand 377 states and 513 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:27:28,903 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-11-19 05:27:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 05:27:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2022-11-19 05:27:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:27:28,911 INFO L225 Difference]: With dead ends: 598 [2022-11-19 05:27:28,911 INFO L226 Difference]: Without dead ends: 379 [2022-11-19 05:27:28,918 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 [2022-11-19 05:27:28,920 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:27:28,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:27:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-19 05:27:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-11-19 05:27:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-19 05:27:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-11-19 05:27:28,977 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-11-19 05:27:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:27:28,978 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-11-19 05:27:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-11-19 05:27:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 05:27:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:27:28,983 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:27:28,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 05:27:28,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:27:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:27:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2022-11-19 05:27:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:27:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191040403] [2022-11-19 05:27:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:27:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:29,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:27:29,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191040403] [2022-11-19 05:27:29,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191040403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:27:29,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:27:29,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 05:27:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025870063] [2022-11-19 05:27:29,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:27:29,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 05:27:29,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:27:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 05:27:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 05:27:29,162 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:27:29,331 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-11-19 05:27:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 05:27:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-11-19 05:27:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:27:29,336 INFO L225 Difference]: With dead ends: 757 [2022-11-19 05:27:29,336 INFO L226 Difference]: Without dead ends: 446 [2022-11-19 05:27:29,338 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 [2022-11-19 05:27:29,339 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:27:29,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:27:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-19 05:27:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-11-19 05:27:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-19 05:27:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-11-19 05:27:29,371 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-11-19 05:27:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:27:29,372 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-11-19 05:27:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 05:27:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-11-19 05:27:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-19 05:27:29,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:27:29,376 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:27:29,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 05:27:29,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:27:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:27:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2022-11-19 05:27:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:27:29,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129045307] [2022-11-19 05:27:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:27:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:29,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:27:29,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129045307] [2022-11-19 05:27:29,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129045307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:27:29,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441108461] [2022-11-19 05:27:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:29,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:27:29,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:27:29,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:27:29,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 05:27:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:30,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 05:27:30,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:27:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 05:27:30,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:27:30,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441108461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:27:30,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 05:27:30,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 05:27:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111849568] [2022-11-19 05:27:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:27:30,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 05:27:30,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:27:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 05:27:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:27:30,199 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 05:27:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:27:30,355 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-11-19 05:27:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 05:27:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2022-11-19 05:27:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:27:30,360 INFO L225 Difference]: With dead ends: 859 [2022-11-19 05:27:30,360 INFO L226 Difference]: Without dead ends: 439 [2022-11-19 05:27:30,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:27:30,363 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:27:30,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:27:30,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-19 05:27:30,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-19 05:27:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-19 05:27:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-11-19 05:27:30,398 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-11-19 05:27:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:27:30,399 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-11-19 05:27:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 05:27:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-11-19 05:27:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 05:27:30,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:27:30,402 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:27:30,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 05:27:30,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:27:30,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:27:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:27:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2022-11-19 05:27:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:27:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925381375] [2022-11-19 05:27:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:30,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:27:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:30,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:27:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925381375] [2022-11-19 05:27:30,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925381375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:27:30,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724479115] [2022-11-19 05:27:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:27:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:27:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:27:30,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:27:30,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 05:27:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:27:31,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:27:31,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:27:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:31,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:27:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:27:31,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724479115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:27:31,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479290323] [2022-11-19 05:27:31,452 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-19 05:27:31,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 05:27:31,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 05:27:31,463 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 05:27:31,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 05:27:47,321 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-19 05:27:47,619 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 05:27:56,524 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:28:02,936 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:28:50,528 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 515 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:28:50,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [479290323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:28:50,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 05:28:50,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-19 05:28:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565008619] [2022-11-19 05:28:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:28:50,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-19 05:28:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:28:50,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-19 05:28:50,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-19 05:28:50,537 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 05:28:59,826 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:08,672 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:17,635 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:26,620 WARN L233 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:35,938 WARN L233 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:45,196 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:29:54,425 WARN L233 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:30:03,760 WARN L233 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:30:15,426 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 513 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:30:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:30:19,775 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-11-19 05:30:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 05:30:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2022-11-19 05:30:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:30:19,780 INFO L225 Difference]: With dead ends: 874 [2022-11-19 05:30:19,780 INFO L226 Difference]: Without dead ends: 467 [2022-11-19 05:30:19,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 05:30:19,784 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 118 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:30:19,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2557 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 05:30:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-19 05:30:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-11-19 05:30:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-19 05:30:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-11-19 05:30:19,924 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-11-19 05:30:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:30:19,924 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-11-19 05:30:19,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 05:30:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-11-19 05:30:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 05:30:19,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:30:19,928 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:30:19,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 05:30:20,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:30:20,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:30:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:30:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2022-11-19 05:30:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:30:20,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552502482] [2022-11-19 05:30:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:30:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:30:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:30:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:30:20,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:30:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552502482] [2022-11-19 05:30:20,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552502482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:30:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443655620] [2022-11-19 05:30:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:30:20,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:30:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:30:20,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:30:20,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 05:30:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:30:20,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:30:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:30:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:30:20,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:30:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-19 05:30:20,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443655620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:30:20,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577770420] [2022-11-19 05:30:20,924 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-19 05:30:20,925 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 05:30:20,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 05:30:20,926 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 05:30:20,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 05:30:35,120 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-19 05:30:35,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 05:30:44,467 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:30:50,920 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:31:41,689 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 517 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:31:41,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1577770420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:31:41,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 05:31:41,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-19 05:31:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456657704] [2022-11-19 05:31:41,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:31:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 05:31:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:31:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 05:31:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-19 05:31:41,698 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 05:31:51,906 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:02,083 WARN L233 SmtUtils]: Spent 9.80s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:12,564 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:22,975 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:33,418 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:43,953 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:32:54,349 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:33:04,750 WARN L233 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:33:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:33:12,345 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-11-19 05:33:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 05:33:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2022-11-19 05:33:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:33:12,349 INFO L225 Difference]: With dead ends: 867 [2022-11-19 05:33:12,349 INFO L226 Difference]: Without dead ends: 451 [2022-11-19 05:33:12,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 147.3s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 05:33:12,353 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 42 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-19 05:33:12,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3980 Invalid, 1526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-19 05:33:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-19 05:33:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-19 05:33:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-19 05:33:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-11-19 05:33:12,459 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-11-19 05:33:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:33:12,460 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-11-19 05:33:12,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-19 05:33:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-11-19 05:33:12,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-19 05:33:12,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:33:12,463 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] [2022-11-19 05:33:12,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 05:33:12,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 05:33:12,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:33:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:33:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2022-11-19 05:33:12,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:33:12,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239735919] [2022-11-19 05:33:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:33:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:33:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:33:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-19 05:33:12,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:33:12,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239735919] [2022-11-19 05:33:12,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239735919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:33:12,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 05:33:12,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 05:33:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550040132] [2022-11-19 05:33:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:33:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 05:33:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:33:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 05:33:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 05:33:12,804 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 05:33:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:33:13,082 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-11-19 05:33:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 05:33:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-11-19 05:33:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:33:13,092 INFO L225 Difference]: With dead ends: 847 [2022-11-19 05:33:13,093 INFO L226 Difference]: Without dead ends: 448 [2022-11-19 05:33:13,094 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 [2022-11-19 05:33:13,096 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 05:33:13,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 05:33:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-19 05:33:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-19 05:33:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-19 05:33:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-11-19 05:33:13,233 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-11-19 05:33:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:33:13,233 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-11-19 05:33:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 05:33:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-11-19 05:33:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 05:33:13,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:33:13,237 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:33:13,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 05:33:13,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:33:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:33:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2022-11-19 05:33:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:33:13,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014998918] [2022-11-19 05:33:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:33:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:33:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:33:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:33:13,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:33:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014998918] [2022-11-19 05:33:13,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014998918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:33:13,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166121110] [2022-11-19 05:33:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:33:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:33:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:33:13,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:33:13,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 05:33:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:33:13,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:33:13,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:33:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:33:14,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 05:33:14,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166121110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:33:14,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 05:33:14,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 05:33:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124131550] [2022-11-19 05:33:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:33:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 05:33:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:33:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 05:33:14,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:33:14,086 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 05:33:14,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:33:14,531 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-11-19 05:33:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 05:33:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2022-11-19 05:33:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:33:14,537 INFO L225 Difference]: With dead ends: 1246 [2022-11-19 05:33:14,538 INFO L226 Difference]: Without dead ends: 843 [2022-11-19 05:33:14,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 05:33:14,540 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 05:33:14,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 05:33:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-19 05:33:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-19 05:33:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-19 05:33:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-11-19 05:33:14,736 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-11-19 05:33:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:33:14,738 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-11-19 05:33:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 05:33:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-11-19 05:33:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 05:33:14,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:33:14,743 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:33:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 05:33:14,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 05:33:14,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:33:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:33:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2022-11-19 05:33:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:33:14,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954814423] [2022-11-19 05:33:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:33:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:33:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:33:15,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:33:15,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:33:15,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954814423] [2022-11-19 05:33:15,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954814423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:33:15,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349428281] [2022-11-19 05:33:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:33:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:33:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:33:15,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:33:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 05:33:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:33:15,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:33:15,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:33:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:33:15,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:33:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:33:15,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349428281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:33:15,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [76657955] [2022-11-19 05:33:15,805 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-19 05:33:15,805 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 05:33:15,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 05:33:15,807 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 05:33:15,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 05:33:30,044 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-19 05:33:30,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 05:33:39,974 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:33:47,209 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:34:51,871 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 521 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:34:51,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [76657955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 05:34:51,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 05:34:51,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-19 05:34:51,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612106798] [2022-11-19 05:34:51,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 05:34:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 05:34:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 05:34:51,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 05:34:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-19 05:34:51,879 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-19 05:35:01,178 WARN L233 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:10,465 WARN L233 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:19,132 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:28,920 WARN L233 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:38,828 WARN L233 SmtUtils]: Spent 9.45s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:48,770 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:35:58,718 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:36:08,933 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:36:12,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 05:36:12,782 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-11-19 05:36:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 05:36:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2022-11-19 05:36:12,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 05:36:12,789 INFO L225 Difference]: With dead ends: 1635 [2022-11-19 05:36:12,789 INFO L226 Difference]: Without dead ends: 840 [2022-11-19 05:36:12,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 156.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 05:36:12,794 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 89 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 05:36:12,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1804 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 05:36:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-19 05:36:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-11-19 05:36:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-19 05:36:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-11-19 05:36:12,985 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-11-19 05:36:12,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 05:36:12,986 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-11-19 05:36:12,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-19 05:36:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-11-19 05:36:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 05:36:12,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 05:36:12,991 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 05:36:13,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 05:36:13,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:36:13,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 05:36:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 05:36:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2131341341, now seen corresponding path program 1 times [2022-11-19 05:36:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 05:36:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722425440] [2022-11-19 05:36:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 05:36:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:36:13,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 05:36:13,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722425440] [2022-11-19 05:36:13,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722425440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 05:36:13,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261202980] [2022-11-19 05:36:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 05:36:13,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 05:36:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 05:36:13,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 05:36:13,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9232509a-432d-42e7-a752-f11ae96e7c0e/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 05:36:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 05:36:13,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 05:36:13,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 05:36:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:36:13,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 05:36:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-19 05:36:14,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261202980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 05:36:14,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814542696] [2022-11-19 05:36:14,044 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-19 05:36:14,045 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 05:36:14,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 05:36:14,046 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 05:36:14,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 05:38:39,054 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-19 05:38:40,418 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-19 05:38:42,140 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-11-19 05:38:44,380 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-19 05:38:44,761 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-19 05:38:45,691 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 445 for LOIs [2022-11-19 05:38:46,060 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-11-19 05:38:46,137 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-19 05:38:46,518 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2022-11-19 05:38:46,718 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-11-19 05:38:46,880 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2022-11-19 05:38:53,571 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2022-11-19 05:38:58,919 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-19 05:39:01,101 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2022-11-19 05:39:01,189 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-19 05:39:01,230 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 05:39:10,657 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:39:17,300 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:40:22,355 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 523 DAG size of output: 520 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:40:28,547 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 529 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:40:34,794 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 533 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:40:47,287 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 445 DAG size of output: 292 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 05:40:53,521 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 468 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)