./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/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_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:19:09,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:19:09,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:19:09,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:19:09,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:19:09,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:19:09,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:19:09,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:19:09,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:19:09,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:19:09,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:19:09,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:19:09,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:19:09,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:19:09,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:19:09,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:19:09,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:19:09,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:19:09,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:19:09,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:19:09,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:19:09,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:19:09,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:19:09,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:19:09,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:19:09,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:19:09,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:19:09,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:19:09,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:19:10,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:19:10,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:19:10,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:19:10,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:19:10,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:19:10,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:19:10,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:19:10,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:19:10,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:19:10,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:19:10,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:19:10,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:19:10,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:19:10,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:19:10,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:19:10,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:19:10,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:19:10,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:19:10,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:19:10,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:19:10,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:19:10,061 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:19:10,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:19:10,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:19:10,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:19:10,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:19:10,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:19:10,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:19:10,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:19:10,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:19:10,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:19:10,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:19:10,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:19:10,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:19:10,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:19:10,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:19:10,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:19:10,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:19:10,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:19:10,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:19:10,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:19:10,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:19:10,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:19:10,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:19:10,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:19:10,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:10,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:19:10,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:19:10,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:19:10,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:19:10,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:19:10,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:19:10,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:19:10,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:19:10,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2021-11-25 20:19:10,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:19:10,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:19:10,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:19:10,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:19:10,360 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:19:10,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-25 20:19:10,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/data/b7635eed3/e6f18263b3a24979b2b885575cf0e03d/FLAGd17f7fb51 [2021-11-25 20:19:11,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:19:11,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2021-11-25 20:19:11,129 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/data/b7635eed3/e6f18263b3a24979b2b885575cf0e03d/FLAGd17f7fb51 [2021-11-25 20:19:11,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/data/b7635eed3/e6f18263b3a24979b2b885575cf0e03d [2021-11-25 20:19:11,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:19:11,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:19:11,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:11,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:19:11,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:19:11,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:11" (1/1) ... [2021-11-25 20:19:11,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2c4766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:11, skipping insertion in model container [2021-11-25 20:19:11,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:19:11" (1/1) ... [2021-11-25 20:19:11,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:19:11,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:19:12,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-25 20:19:12,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:12,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:19:12,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2021-11-25 20:19:12,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:19:12,370 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:19:12,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12 WrapperNode [2021-11-25 20:19:12,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:19:12,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:12,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:19:12,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:19:12,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,496 INFO L137 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2021-11-25 20:19:12,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:19:12,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:19:12,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:19:12,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:19:12,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:19:12,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:19:12,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:19:12,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:19:12,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (1/1) ... [2021-11-25 20:19:12,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:19:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:12,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:19:12,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:19:12,727 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 20:19:12,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 20:19:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 20:19:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 20:19:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 20:19:12,728 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 20:19:12,728 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 20:19:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 20:19:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 20:19:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 20:19:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 20:19:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 20:19:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 20:19:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 20:19:12,730 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 20:19:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 20:19:12,730 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 20:19:12,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 20:19:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 20:19:12,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 20:19:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 20:19:12,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 20:19:12,731 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 20:19:12,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 20:19:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 20:19:12,732 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 20:19:12,732 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 20:19:12,733 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 20:19:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 20:19:12,733 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 20:19:12,733 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 20:19:12,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 20:19:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 20:19:12,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 20:19:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 20:19:12,735 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 20:19:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 20:19:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 20:19:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 20:19:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 20:19:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 20:19:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 20:19:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 20:19:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 20:19:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 20:19:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 20:19:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 20:19:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:19:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 20:19:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 20:19:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 20:19:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 20:19:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 20:19:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 20:19:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 20:19:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 20:19:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 20:19:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 20:19:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 20:19:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 20:19:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 20:19:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 20:19:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 20:19:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 20:19:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 20:19:12,742 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 20:19:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 20:19:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 20:19:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 20:19:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 20:19:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 20:19:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 20:19:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 20:19:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 20:19:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 20:19:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 20:19:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 20:19:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 20:19:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 20:19:12,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 20:19:12,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:19:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 20:19:12,746 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 20:19:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 20:19:12,747 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 20:19:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 20:19:12,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 20:19:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 20:19:12,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 20:19:12,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:19:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:19:13,120 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:19:13,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:19:14,108 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:19:14,566 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:19:14,566 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:19:14,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:14 BoogieIcfgContainer [2021-11-25 20:19:14,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:19:14,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:19:14,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:19:14,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:19:14,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:19:11" (1/3) ... [2021-11-25 20:19:14,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10a771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:14, skipping insertion in model container [2021-11-25 20:19:14,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:19:12" (2/3) ... [2021-11-25 20:19:14,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10a771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:19:14, skipping insertion in model container [2021-11-25 20:19:14,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:19:14" (3/3) ... [2021-11-25 20:19:14,578 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2021-11-25 20:19:14,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:19:14,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:19:14,633 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:19:14,640 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:19:14,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:19:14,667 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) [2021-11-25 20:19:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 20:19:14,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:14,685 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:14,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2021-11-25 20:19:14,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056819127] [2021-11-25 20:19:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:14,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:15,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056819127] [2021-11-25 20:19:15,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056819127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:15,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:15,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:19:15,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244493013] [2021-11-25 20:19:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:15,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:19:15,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:19:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:15,160 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) [2021-11-25 20:19:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:15,327 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2021-11-25 20:19:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:19:15,330 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 [2021-11-25 20:19:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:15,346 INFO L225 Difference]: With dead ends: 602 [2021-11-25 20:19:15,347 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 20:19:15,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:19:15,357 INFO L933 BasicCegarLoop]: 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 [2021-11-25 20:19:15,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:19:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 20:19:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 20:19:15,435 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) [2021-11-25 20:19:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2021-11-25 20:19:15,443 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2021-11-25 20:19:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:15,445 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2021-11-25 20:19:15,446 INFO L471 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) [2021-11-25 20:19:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2021-11-25 20:19:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:19:15,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:15,453 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:15,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:19:15,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2021-11-25 20:19:15,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:15,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249778289] [2021-11-25 20:19:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:15,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:15,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249778289] [2021-11-25 20:19:15,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249778289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:15,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:15,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:15,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258593680] [2021-11-25 20:19:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:15,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:15,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:15,641 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) [2021-11-25 20:19:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:15,867 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2021-11-25 20:19:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:15,867 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 [2021-11-25 20:19:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:15,873 INFO L225 Difference]: With dead ends: 598 [2021-11-25 20:19:15,873 INFO L226 Difference]: Without dead ends: 379 [2021-11-25 20:19:15,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:15,878 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:15,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-25 20:19:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-25 20:19:15,914 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) [2021-11-25 20:19:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2021-11-25 20:19:15,919 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2021-11-25 20:19:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:15,919 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2021-11-25 20:19:15,920 INFO L471 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) [2021-11-25 20:19:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2021-11-25 20:19:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 20:19:15,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:15,926 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:15,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:19:15,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2021-11-25 20:19:15,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194997458] [2021-11-25 20:19:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:15,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:16,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:16,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194997458] [2021-11-25 20:19:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194997458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:16,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583087643] [2021-11-25 20:19:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:16,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:16,023 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) [2021-11-25 20:19:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:16,252 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2021-11-25 20:19:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:16,253 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 [2021-11-25 20:19:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:16,258 INFO L225 Difference]: With dead ends: 757 [2021-11-25 20:19:16,258 INFO L226 Difference]: Without dead ends: 446 [2021-11-25 20:19:16,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:16,261 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:16,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:19:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-25 20:19:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2021-11-25 20:19:16,298 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) [2021-11-25 20:19:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2021-11-25 20:19:16,303 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2021-11-25 20:19:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:16,304 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2021-11-25 20:19:16,304 INFO L471 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) [2021-11-25 20:19:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2021-11-25 20:19:16,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-25 20:19:16,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:16,310 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:16,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:19:16,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:16,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2021-11-25 20:19:16,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349304900] [2021-11-25 20:19:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:16,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:16,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349304900] [2021-11-25 20:19:16,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349304900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:19:16,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335745417] [2021-11-25 20:19:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:16,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:16,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:16,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:16,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:19:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:16,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:19:16,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 20:19:17,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:17,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335745417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:17,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:19:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:19:17,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294955604] [2021-11-25 20:19:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:17,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:17,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:17,098 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) [2021-11-25 20:19:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:17,217 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2021-11-25 20:19:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:17,217 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 [2021-11-25 20:19:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:17,221 INFO L225 Difference]: With dead ends: 859 [2021-11-25 20:19:17,221 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 20:19:17,223 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:19:17,225 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 6 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 [2021-11-25 20:19:17,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:19:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 20:19:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-25 20:19:17,283 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) [2021-11-25 20:19:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2021-11-25 20:19:17,287 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2021-11-25 20:19:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:17,288 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2021-11-25 20:19:17,288 INFO L471 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) [2021-11-25 20:19:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2021-11-25 20:19:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 20:19:17,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:17,292 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:17,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:19:17,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:17,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2021-11-25 20:19:17,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:17,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70116244] [2021-11-25 20:19:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:17,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:17,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:17,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70116244] [2021-11-25 20:19:17,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70116244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:19:17,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385147280] [2021-11-25 20:19:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:17,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:17,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:17,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:17,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:19:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:17,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:19:17,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:18,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:19:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:19:18,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385147280] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:19:18,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1755956927] [2021-11-25 20:19:18,484 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2021-11-25 20:19:18,485 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:19:18,489 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:19:18,494 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:19:18,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:19:32,710 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 20:19:33,008 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:20:15,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1755956927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:15,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:20:15,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2021-11-25 20:20:15,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944279873] [2021-11-25 20:20:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 20:20:15,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 20:20:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-11-25 20:20:15,072 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) [2021-11-25 20:20:21,234 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:27,405 WARN L227 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:33,625 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:39,931 WARN L227 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:46,190 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:52,483 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:20:58,752 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:21:05,012 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:21:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:15,541 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2021-11-25 20:21:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 20:21:15,542 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 [2021-11-25 20:21:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:15,546 INFO L225 Difference]: With dead ends: 874 [2021-11-25 20:21:15,546 INFO L226 Difference]: Without dead ends: 467 [2021-11-25 20:21:15,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 97.6s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 20:21:15,550 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 118 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s 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, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:15,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2557 Invalid, 1245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 20:21:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-25 20:21:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2021-11-25 20:21:15,610 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) [2021-11-25 20:21:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2021-11-25 20:21:15,614 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2021-11-25 20:21:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:15,615 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2021-11-25 20:21:15,615 INFO L471 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) [2021-11-25 20:21:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2021-11-25 20:21:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-25 20:21:15,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:15,618 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:15,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:15,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:15,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2021-11-25 20:21:15,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:15,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689172761] [2021-11-25 20:21:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:15,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:21:15,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689172761] [2021-11-25 20:21:15,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689172761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:21:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12263482] [2021-11-25 20:21:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:15,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:15,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:15,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:15,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:21:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:16,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:21:16,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:21:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 20:21:16,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12263482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:21:16,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654267361] [2021-11-25 20:21:16,745 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2021-11-25 20:21:16,745 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:21:16,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:21:16,747 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:21:16,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:21:28,547 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 20:21:28,815 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:22:12,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [654267361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:12,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:22:12,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2021-11-25 20:22:12,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041848960] [2021-11-25 20:22:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:12,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 20:22:12,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 20:22:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-11-25 20:22:12,152 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) [2021-11-25 20:22:18,293 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:24,497 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:30,860 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:37,194 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:43,558 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:49,838 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:22:56,193 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:23:02,531 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:23:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:06,989 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2021-11-25 20:23:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 20:23:06,990 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 [2021-11-25 20:23:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:06,993 INFO L225 Difference]: With dead ends: 867 [2021-11-25 20:23:06,994 INFO L226 Difference]: Without dead ends: 451 [2021-11-25 20:23:06,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2021-11-25 20:23:06,997 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 42 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:06,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 3980 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:23:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-25 20:23:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-25 20:23:07,050 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) [2021-11-25 20:23:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2021-11-25 20:23:07,054 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2021-11-25 20:23:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:07,054 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2021-11-25 20:23:07,055 INFO L471 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) [2021-11-25 20:23:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2021-11-25 20:23:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 20:23:07,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:07,058 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:23:07,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:07,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:07,282 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2021-11-25 20:23:07,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756887394] [2021-11-25 20:23:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:07,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 20:23:07,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756887394] [2021-11-25 20:23:07,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756887394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:07,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:07,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:23:07,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107206821] [2021-11-25 20:23:07,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:07,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:07,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:07,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:07,397 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) [2021-11-25 20:23:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:07,542 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2021-11-25 20:23:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:07,542 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 [2021-11-25 20:23:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:07,546 INFO L225 Difference]: With dead ends: 847 [2021-11-25 20:23:07,546 INFO L226 Difference]: Without dead ends: 448 [2021-11-25 20:23:07,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:07,549 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 29 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 [2021-11-25 20:23:07,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:23:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-25 20:23:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-11-25 20:23:07,605 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) [2021-11-25 20:23:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2021-11-25 20:23:07,609 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2021-11-25 20:23:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:07,610 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2021-11-25 20:23:07,610 INFO L471 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) [2021-11-25 20:23:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2021-11-25 20:23:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 20:23:07,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:07,613 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:23:07,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:23:07,614 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2021-11-25 20:23:07,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:07,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342911459] [2021-11-25 20:23:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:07,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:23:07,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:07,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342911459] [2021-11-25 20:23:07,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342911459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:07,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520319794] [2021-11-25 20:23:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:07,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:07,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:07,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:07,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:23:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:08,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:23:08,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:23:08,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:08,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520319794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:08,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:23:08,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:23:08,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192362089] [2021-11-25 20:23:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:08,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:08,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:08,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:08,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:23:08,216 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) [2021-11-25 20:23:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:08,448 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2021-11-25 20:23:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:08,449 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 [2021-11-25 20:23:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:08,456 INFO L225 Difference]: With dead ends: 1246 [2021-11-25 20:23:08,456 INFO L226 Difference]: Without dead ends: 843 [2021-11-25 20:23:08,458 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:23:08,459 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:08,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:23:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-25 20:23:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2021-11-25 20:23:08,544 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) [2021-11-25 20:23:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2021-11-25 20:23:08,551 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2021-11-25 20:23:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:08,552 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2021-11-25 20:23:08,552 INFO L471 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) [2021-11-25 20:23:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2021-11-25 20:23:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 20:23:08,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:08,556 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:23:08,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:08,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:08,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2021-11-25 20:23:08,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:08,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957972693] [2021-11-25 20:23:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:08,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:23:08,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:08,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957972693] [2021-11-25 20:23:08,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957972693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:23:08,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735974391] [2021-11-25 20:23:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:08,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:08,845 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:08,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:23:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:09,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:23:09,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:23:09,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:23:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:23:09,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735974391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:23:09,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1011897857] [2021-11-25 20:23:09,580 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2021-11-25 20:23:09,580 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:23:09,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:23:09,582 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:23:09,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:23:20,576 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 20:23:20,817 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:24:09,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1011897857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:09,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:24:09,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2021-11-25 20:24:09,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171674721] [2021-11-25 20:24:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:09,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 20:24:09,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 20:24:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2021-11-25 20:24:09,923 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) [2021-11-25 20:24:16,077 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:22,287 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:28,547 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:34,818 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:41,121 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:47,436 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:24:53,774 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:25:00,109 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:25:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:02,192 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2021-11-25 20:25:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 20:25:02,192 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 [2021-11-25 20:25:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:02,199 INFO L225 Difference]: With dead ends: 1635 [2021-11-25 20:25:02,199 INFO L226 Difference]: Without dead ends: 840 [2021-11-25 20:25:02,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 98.5s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 20:25:02,206 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 89 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:02,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1804 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 20:25:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-25 20:25:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2021-11-25 20:25:02,291 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) [2021-11-25 20:25:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2021-11-25 20:25:02,298 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2021-11-25 20:25:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:02,298 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2021-11-25 20:25:02,299 INFO L471 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) [2021-11-25 20:25:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2021-11-25 20:25:02,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:25:02,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:02,303 INFO L514 BasicCegarLoop]: 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] [2021-11-25 20:25:02,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:25:02,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:02,518 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2131341341, now seen corresponding path program 1 times [2021-11-25 20:25:02,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:02,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945272860] [2021-11-25 20:25:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:02,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:25:02,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945272860] [2021-11-25 20:25:02,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945272860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:25:02,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224484547] [2021-11-25 20:25:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:02,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:02,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:02,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:25:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f43ff30-70e0-4ead-8fad-30b9c8914711/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:25:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:02,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:25:02,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:25:03,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:25:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 20:25:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224484547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:25:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1414882147] [2021-11-25 20:25:03,382 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-25 20:25:03,382 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:25:03,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:25:03,383 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:25:03,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:26:44,326 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 711 for LOIs [2021-11-25 20:26:45,435 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-25 20:26:46,740 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2021-11-25 20:26:48,530 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 20:26:48,767 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2021-11-25 20:26:49,468 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 445 for LOIs [2021-11-25 20:26:49,707 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2021-11-25 20:26:49,751 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-25 20:26:49,988 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2021-11-25 20:26:50,138 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2021-11-25 20:26:50,287 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2021-11-25 20:26:54,674 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2021-11-25 20:26:58,084 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2021-11-25 20:26:59,541 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2021-11-25 20:26:59,626 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2021-11-25 20:26:59,666 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:28:15,095 WARN L227 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 750 DAG size of output: 518 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:28:29,725 WARN L227 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 739 DAG size of output: 555 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:28:38,291 WARN L227 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 745 DAG size of output: 539 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:28:45,020 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 749 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:28:52,214 WARN L227 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 711 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:06,373 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 516 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:21,896 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 562 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:37,749 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 555 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:29:52,364 WARN L227 SmtUtils]: Spent 10.90s on a formula simplification. DAG size of input: 468 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)