./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V --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 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:29:13,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:29:13,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:29:13,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:29:13,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:29:13,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:29:13,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:29:13,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:29:13,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:29:13,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:29:13,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:29:13,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:29:13,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:29:13,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:29:13,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:29:13,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:29:13,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:29:13,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:29:13,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:29:13,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:29:13,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:29:13,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:29:13,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:29:13,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:29:13,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:29:13,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:29:13,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:29:13,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:29:13,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:29:13,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:29:13,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:29:13,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:29:13,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:29:13,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:29:13,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:29:13,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:29:13,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:29:13,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:29:13,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:29:13,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:29:13,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:29:13,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:29:13,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:29:13,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:29:13,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:29:13,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:29:13,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:29:13,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:29:13,556 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:29:13,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:29:13,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:29:13,557 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:29:13,558 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:29:13,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:29:13,558 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:29:13,558 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:29:13,558 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:29:13,559 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:29:13,559 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:29:13,559 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:29:13,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:29:13,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:29:13,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:29:13,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:29:13,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:29:13,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:29:13,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:29:13,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:29:13,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:29:13,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:29:13,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:29:13,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:29:13,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:29:13,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:29:13,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:29:13,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:29:13,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:29:13,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:29:13,565 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:29:13,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:29:13,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:29:13,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:29:13,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:29:13,566 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_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fd69d2f74506159a7a57598b08a18ff098ebf1233f7e6688a335d4e30dd566 [2021-11-23 03:29:13,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:29:13,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:29:13,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:29:13,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:29:13,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:29:13,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2021-11-23 03:29:13,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/data/4afbf9f1a/9f5e17d1eaeb4a42836aa7c27f41e181/FLAGefe60a545 [2021-11-23 03:29:14,587 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:29:14,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c [2021-11-23 03:29:14,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/data/4afbf9f1a/9f5e17d1eaeb4a42836aa7c27f41e181/FLAGefe60a545 [2021-11-23 03:29:14,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/data/4afbf9f1a/9f5e17d1eaeb4a42836aa7c27f41e181 [2021-11-23 03:29:14,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:29:14,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:29:14,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:29:14,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:29:14,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:29:14,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:14" (1/1) ... [2021-11-23 03:29:14,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1942fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:14, skipping insertion in model container [2021-11-23 03:29:14,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:14" (1/1) ... [2021-11-23 03:29:14,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:29:14,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:29:15,571 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_363a8f64-a42d-4cd6-9125-55f7912167e5/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2021-11-23 03:29:15,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:15,608 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:29:15,756 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_363a8f64-a42d-4cd6-9125-55f7912167e5/sv-benchmarks/c/product-lines/email_spec11_product18.cil.c[57905,57918] [2021-11-23 03:29:15,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:15,813 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:29:15,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15 WrapperNode [2021-11-23 03:29:15,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:29:15,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:15,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:29:15,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:29:15,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:15,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:15,967 INFO L137 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 907 [2021-11-23 03:29:15,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:15,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:29:15,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:29:15,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:29:15,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:15,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:15,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:15,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:16,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:16,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:16,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:16,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:29:16,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:29:16,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:29:16,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:29:16,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (1/1) ... [2021-11-23 03:29:16,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:29:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:16,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:29:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:29:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:29:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:29:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:29:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:29:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:29:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:29:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:29:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:29:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:29:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:29:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:29:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:29:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:29:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:29:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:29:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:29:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:29:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:29:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:29:16,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:29:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:29:16,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:29:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:29:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:29:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:29:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:29:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:29:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:29:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:29:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:29:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:29:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:29:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:29:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:29:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:29:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:29:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:29:16,463 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:29:16,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:29:17,389 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:29:17,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:29:17,813 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:29:17,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:17 BoogieIcfgContainer [2021-11-23 03:29:17,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:29:17,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:29:17,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:29:17,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:29:17,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:14" (1/3) ... [2021-11-23 03:29:17,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662648c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:17, skipping insertion in model container [2021-11-23 03:29:17,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:15" (2/3) ... [2021-11-23 03:29:17,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662648c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:17, skipping insertion in model container [2021-11-23 03:29:17,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:17" (3/3) ... [2021-11-23 03:29:17,827 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product18.cil.c [2021-11-23 03:29:17,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:29:17,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:29:17,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:29:17,921 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 [2021-11-23 03:29:17,921 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:29:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 86 states have (on average 1.372093023255814) internal successors, (118), 88 states have internal predecessors, (118), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-23 03:29:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:29:17,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:17,959 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:29:17,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash -108564897, now seen corresponding path program 1 times [2021-11-23 03:29:17,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:17,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12922604] [2021-11-23 03:29:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:17,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:18,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:18,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12922604] [2021-11-23 03:29:18,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12922604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:18,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:18,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:29:18,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703281683] [2021-11-23 03:29:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:18,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:29:18,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:29:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:29:18,369 INFO L87 Difference]: Start difference. First operand has 142 states, 86 states have (on average 1.372093023255814) internal successors, (118), 88 states have internal predecessors, (118), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:18,503 INFO L93 Difference]: Finished difference Result 201 states and 266 transitions. [2021-11-23 03:29:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:29:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2021-11-23 03:29:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:18,529 INFO L225 Difference]: With dead ends: 201 [2021-11-23 03:29:18,529 INFO L226 Difference]: Without dead ends: 139 [2021-11-23 03:29:18,545 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 [2021-11-23 03:29:18,549 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:18,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-23 03:29:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-23 03:29:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 85 states have internal predecessors, (112), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-23 03:29:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2021-11-23 03:29:18,637 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 60 [2021-11-23 03:29:18,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:18,639 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2021-11-23 03:29:18,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2021-11-23 03:29:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 03:29:18,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:18,645 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:29:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:29:18,646 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -71801308, now seen corresponding path program 1 times [2021-11-23 03:29:18,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:18,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189746177] [2021-11-23 03:29:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:18,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:18,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:18,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189746177] [2021-11-23 03:29:18,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189746177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:18,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:18,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:18,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743723268] [2021-11-23 03:29:18,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:18,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:18,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:18,851 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:18,950 INFO L93 Difference]: Finished difference Result 197 states and 254 transitions. [2021-11-23 03:29:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:18,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 03:29:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:18,954 INFO L225 Difference]: With dead ends: 197 [2021-11-23 03:29:18,954 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 03:29:18,955 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 [2021-11-23 03:29:18,957 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:18,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 03:29:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-23 03:29:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 87 states have internal predecessors, (114), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-23 03:29:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2021-11-23 03:29:18,995 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 61 [2021-11-23 03:29:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:18,997 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2021-11-23 03:29:18,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2021-11-23 03:29:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 03:29:19,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:19,007 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:19,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:29:19,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1640872220, now seen corresponding path program 1 times [2021-11-23 03:29:19,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243677423] [2021-11-23 03:29:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:19,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:19,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243677423] [2021-11-23 03:29:19,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243677423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:19,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:19,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:19,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534099918] [2021-11-23 03:29:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:19,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:19,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:19,181 INFO L87 Difference]: Start difference. First operand 141 states and 189 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:19,294 INFO L93 Difference]: Finished difference Result 312 states and 437 transitions. [2021-11-23 03:29:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:19,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-23 03:29:19,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:19,298 INFO L225 Difference]: With dead ends: 312 [2021-11-23 03:29:19,298 INFO L226 Difference]: Without dead ends: 189 [2021-11-23 03:29:19,300 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 [2021-11-23 03:29:19,301 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 57 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:19,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 336 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-23 03:29:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2021-11-23 03:29:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 118 states have (on average 1.4152542372881356) internal successors, (167), 119 states have internal predecessors, (167), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 03:29:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 264 transitions. [2021-11-23 03:29:19,326 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 264 transitions. Word has length 66 [2021-11-23 03:29:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:19,326 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 264 transitions. [2021-11-23 03:29:19,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:29:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 264 transitions. [2021-11-23 03:29:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:29:19,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:19,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:19,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:29:19,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2093061831, now seen corresponding path program 1 times [2021-11-23 03:29:19,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:19,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358859408] [2021-11-23 03:29:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:19,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:19,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:19,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358859408] [2021-11-23 03:29:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358859408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:19,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088627008] [2021-11-23 03:29:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:19,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:19,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:19,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:29:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:19,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:29:19,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:20,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:29:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:29:20,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088627008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:29:20,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1083179074] [2021-11-23 03:29:20,307 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2021-11-23 03:29:20,307 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:29:20,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:29:20,320 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:29:20,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:29:46,211 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:29:46,517 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:29:46,767 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:30:26,395 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 504 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:47,448 WARN L227 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 588 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:01,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1083179074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:01,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:31:01,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 03:31:01,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981451525] [2021-11-23 03:31:01,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:01,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:31:01,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:31:01,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:31:01,611 INFO L87 Difference]: Start difference. First operand 184 states and 264 transitions. Second operand has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 03:31:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:20,030 INFO L93 Difference]: Finished difference Result 451 states and 696 transitions. [2021-11-23 03:31:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:31:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 67 [2021-11-23 03:31:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:20,040 INFO L225 Difference]: With dead ends: 451 [2021-11-23 03:31:20,045 INFO L226 Difference]: Without dead ends: 285 [2021-11-23 03:31:20,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 87.5s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:31:20,049 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 173 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:20,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 2171 Invalid, 1593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:31:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-23 03:31:20,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 212. [2021-11-23 03:31:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 145 states have (on average 1.4206896551724137) internal successors, (206), 146 states have internal predecessors, (206), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-23 03:31:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 303 transitions. [2021-11-23 03:31:20,166 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 303 transitions. Word has length 67 [2021-11-23 03:31:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:20,166 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 303 transitions. [2021-11-23 03:31:20,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 03:31:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 303 transitions. [2021-11-23 03:31:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:31:20,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:20,169 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:20,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:31:20,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:20,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 283517460, now seen corresponding path program 1 times [2021-11-23 03:31:20,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:20,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432524009] [2021-11-23 03:31:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:20,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:31:20,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432524009] [2021-11-23 03:31:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432524009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:31:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103796335] [2021-11-23 03:31:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:20,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:20,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:20,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:20,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:31:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:20,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:31:20,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:31:20,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:31:21,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103796335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261101446] [2021-11-23 03:31:21,088 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-11-23 03:31:21,089 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:21,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:21,090 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:21,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:54,219 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:31:54,477 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:31:54,728 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2021-11-23 03:31:56,651 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2021-11-23 03:31:56,690 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2021-11-23 03:32:06,831 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2021-11-23 03:32:06,868 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2021-11-23 03:32:06,918 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2021-11-23 03:32:07,486 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:23,893 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:50,523 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 504 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:17,119 WARN L227 SmtUtils]: Spent 19.45s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:33,988 WARN L227 SmtUtils]: Spent 15.07s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:29,558 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 578 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:38,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1261101446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:38,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:34:38,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2021-11-23 03:34:38,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891668539] [2021-11-23 03:34:38,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:38,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-23 03:34:38,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-23 03:34:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2510, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 03:34:38,290 INFO L87 Difference]: Start difference. First operand 212 states and 303 transitions. Second operand has 47 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:34:57,852 WARN L227 SmtUtils]: Spent 17.07s on a formula simplification. DAG size of input: 563 DAG size of output: 443 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:03,584 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 353 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:10,038 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 351 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:16,557 WARN L227 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 349 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:35,082 WARN L227 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 584 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:43,936 WARN L227 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 586 DAG size of output: 431 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:56,501 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 594 DAG size of output: 432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:08,627 INFO L93 Difference]: Finished difference Result 550 states and 838 transitions. [2021-11-23 03:36:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-23 03:36:08,634 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 73 [2021-11-23 03:36:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:08,639 INFO L225 Difference]: With dead ends: 550 [2021-11-23 03:36:08,639 INFO L226 Difference]: Without dead ends: 384 [2021-11-23 03:36:08,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 224.0s TimeCoverageRelationStatistics Valid=211, Invalid=3695, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 03:36:08,643 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 233 mSDsluCounter, 3746 mSDsCounter, 0 mSdLazyCounter, 5323 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 5366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:08,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 3858 Invalid, 5366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 5323 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2021-11-23 03:36:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-23 03:36:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 310. [2021-11-23 03:36:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 226 states have (on average 1.4646017699115044) internal successors, (331), 229 states have internal predecessors, (331), 60 states have call successors, (60), 24 states have call predecessors, (60), 23 states have return successors, (60), 56 states have call predecessors, (60), 59 states have call successors, (60) [2021-11-23 03:36:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 451 transitions. [2021-11-23 03:36:08,820 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 451 transitions. Word has length 73 [2021-11-23 03:36:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:08,821 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 451 transitions. [2021-11-23 03:36:08,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 15 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:36:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 451 transitions. [2021-11-23 03:36:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 03:36:08,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:08,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:08,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:36:09,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:09,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1433017184, now seen corresponding path program 1 times [2021-11-23 03:36:09,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:09,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140806645] [2021-11-23 03:36:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:09,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:36:09,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140806645] [2021-11-23 03:36:09,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140806645] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:36:09,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345752161] [2021-11-23 03:36:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:09,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:09,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:36:09,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:36:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:09,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:36:09,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:36:09,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345752161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:36:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853265955] [2021-11-23 03:36:09,650 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 03:36:09,651 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:36:09,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:36:09,651 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:36:09,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:37:05,907 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:37:06,159 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 418 for LOIs [2021-11-23 03:37:06,429 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 211 for LOIs [2021-11-23 03:37:06,493 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:37:06,749 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 415 for LOIs [2021-11-23 03:37:07,023 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 230 for LOIs [2021-11-23 03:37:08,380 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 208 for LOIs [2021-11-23 03:37:08,415 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 230 for LOIs [2021-11-23 03:37:16,329 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 222 for LOIs [2021-11-23 03:37:16,363 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 222 for LOIs [2021-11-23 03:37:16,412 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 392 for LOIs [2021-11-23 03:37:16,881 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:37:54,073 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 504 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:25,695 WARN L227 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 532 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:55,640 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 530 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1853265955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:39:37,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:39:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2021-11-23 03:39:37,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695085117] [2021-11-23 03:39:37,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:39:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-23 03:39:37,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:39:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-23 03:39:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=3025, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:39:37,451 INFO L87 Difference]: Start difference. First operand 310 states and 451 transitions. Second operand has 52 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 03:40:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:40:08,486 INFO L93 Difference]: Finished difference Result 658 states and 982 transitions. [2021-11-23 03:40:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-23 03:40:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 76 [2021-11-23 03:40:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:40:08,492 INFO L225 Difference]: With dead ends: 658 [2021-11-23 03:40:08,492 INFO L226 Difference]: Without dead ends: 492 [2021-11-23 03:40:08,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 154.4s TimeCoverageRelationStatistics Valid=201, Invalid=3581, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 03:40:08,496 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 269 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 6694 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 4923 SdHoareTripleChecker+Invalid, 6744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 6694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:40:08,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 4923 Invalid, 6744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 6694 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2021-11-23 03:40:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-23 03:40:08,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 350. [2021-11-23 03:40:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 259 states have (on average 1.4633204633204633) internal successors, (379), 263 states have internal predecessors, (379), 64 states have call successors, (64), 27 states have call predecessors, (64), 26 states have return successors, (64), 59 states have call predecessors, (64), 63 states have call successors, (64) [2021-11-23 03:40:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 507 transitions. [2021-11-23 03:40:08,681 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 507 transitions. Word has length 76 [2021-11-23 03:40:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:40:08,682 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 507 transitions. [2021-11-23 03:40:08,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 29 states have internal predecessors, (37), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 03:40:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 507 transitions. [2021-11-23 03:40:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 03:40:08,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:40:08,685 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:40:08,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:40:08,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:08,899 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:40:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:40:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 758951443, now seen corresponding path program 1 times [2021-11-23 03:40:08,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:40:08,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068755887] [2021-11-23 03:40:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:08,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:40:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:40:09,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:40:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068755887] [2021-11-23 03:40:09,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068755887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:40:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969501202] [2021-11-23 03:40:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:40:09,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:40:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:40:09,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:40:09,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_363a8f64-a42d-4cd6-9125-55f7912167e5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:40:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:40:09,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:40:09,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:40:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:40:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:40:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:40:09,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969501202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:40:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [960895003] [2021-11-23 03:40:09,619 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 03:40:09,620 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:40:09,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:40:09,621 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:40:09,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:40:40,773 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:40:41,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 03:40:41,272 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2021-11-23 03:40:42,690 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2021-11-23 03:40:42,730 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2021-11-23 03:40:55,007 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2021-11-23 03:40:55,043 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2021-11-23 03:40:55,086 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 448 for LOIs [2021-11-23 03:40:55,611 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 244 for LOIs [2021-11-23 03:40:55,654 INFO L180 IcfgInterpreter]: Interpretation finished