./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta --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 f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:16:02,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:16:02,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:16:02,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:16:02,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:16:02,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:16:02,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:16:02,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:16:02,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:16:02,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:16:02,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:16:02,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:16:02,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:16:02,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:16:02,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:16:02,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:16:02,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:16:02,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:16:02,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:16:02,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:16:02,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:16:02,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:16:02,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:16:02,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:16:02,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:16:02,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:16:02,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:16:02,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:16:02,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:16:02,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:16:02,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:16:02,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:16:02,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:16:02,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:16:02,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:16:02,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:16:02,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:16:02,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:16:02,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:16:02,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:16:02,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:16:02,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:16:02,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:16:02,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:16:02,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:16:02,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:16:02,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:16:02,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:16:02,940 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:16:02,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:16:02,941 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:16:02,941 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:16:02,942 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:16:02,942 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:16:02,942 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:16:02,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:16:02,943 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:16:02,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:16:02,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:16:02,944 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:16:02,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:16:02,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:16:02,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:16:02,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:16:02,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:16:02,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:16:02,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:16:02,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:16:02,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:16:02,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:16:02,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:16:02,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:16:02,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:16:02,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:16:02,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:02,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:16:02,959 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:16:02,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:16:02,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:16:02,960 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:16:02,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:16:02,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:16:02,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:16:02,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b [2022-10-17 17:16:03,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:16:03,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:16:03,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:16:03,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:16:03,260 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:16:03,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2022-10-17 17:16:03,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/data/275aa8b5e/221b5db7a5ef4b37a89fdb60bf90d11d/FLAG83545974f [2022-10-17 17:16:04,121 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:16:04,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2022-10-17 17:16:04,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/data/275aa8b5e/221b5db7a5ef4b37a89fdb60bf90d11d/FLAG83545974f [2022-10-17 17:16:04,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/data/275aa8b5e/221b5db7a5ef4b37a89fdb60bf90d11d [2022-10-17 17:16:04,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:16:04,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:16:04,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:04,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:16:04,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:16:04,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:04" (1/1) ... [2022-10-17 17:16:04,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7661c50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:04, skipping insertion in model container [2022-10-17 17:16:04,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:16:04" (1/1) ... [2022-10-17 17:16:04,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:16:04,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:16:04,982 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_eb92c66a-eb2b-48c4-b641-03ed87db309e/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2022-10-17 17:16:05,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:05,261 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:16:05,359 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_eb92c66a-eb2b-48c4-b641-03ed87db309e/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2022-10-17 17:16:05,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:16:05,470 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:16:05,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05 WrapperNode [2022-10-17 17:16:05,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:16:05,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:05,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:16:05,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:16:05,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,637 INFO L138 Inliner]: procedures = 131, calls = 228, calls flagged for inlining = 54, calls inlined = 47, statements flattened = 930 [2022-10-17 17:16:05,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:16:05,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:16:05,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:16:05,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:16:05,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:16:05,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:16:05,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:16:05,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:16:05,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (1/1) ... [2022-10-17 17:16:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:16:05,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:16:05,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:16:05,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:16:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-10-17 17:16:05,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-10-17 17:16:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-10-17 17:16:05,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-10-17 17:16:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-10-17 17:16:05,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-10-17 17:16:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-10-17 17:16:05,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-10-17 17:16:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-10-17 17:16:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-10-17 17:16:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-10-17 17:16:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-10-17 17:16:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-10-17 17:16:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-10-17 17:16:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-10-17 17:16:05,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-10-17 17:16:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-10-17 17:16:05,825 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-10-17 17:16:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-10-17 17:16:05,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-10-17 17:16:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-10-17 17:16:05,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-10-17 17:16:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-10-17 17:16:05,826 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-10-17 17:16:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-10-17 17:16:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-10-17 17:16:05,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-10-17 17:16:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-10-17 17:16:05,827 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-10-17 17:16:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:16:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-10-17 17:16:05,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-10-17 17:16:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-10-17 17:16:05,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-10-17 17:16:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-10-17 17:16:05,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-10-17 17:16:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-10-17 17:16:05,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-10-17 17:16:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-10-17 17:16:05,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-10-17 17:16:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-10-17 17:16:05,829 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-10-17 17:16:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-10-17 17:16:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-10-17 17:16:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-10-17 17:16:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-10-17 17:16:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-10-17 17:16:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-10-17 17:16:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-10-17 17:16:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-10-17 17:16:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-10-17 17:16:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-10-17 17:16:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-10-17 17:16:05,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-10-17 17:16:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-10-17 17:16:05,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-10-17 17:16:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:16:05,832 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-10-17 17:16:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-10-17 17:16:05,833 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-10-17 17:16:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-10-17 17:16:05,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:16:05,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:16:06,037 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:16:06,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:16:07,263 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:16:08,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:16:08,015 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:16:08,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:08 BoogieIcfgContainer [2022-10-17 17:16:08,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:16:08,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:16:08,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:16:08,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:16:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:16:04" (1/3) ... [2022-10-17 17:16:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be58a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:08, skipping insertion in model container [2022-10-17 17:16:08,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:16:05" (2/3) ... [2022-10-17 17:16:08,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be58a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:16:08, skipping insertion in model container [2022-10-17 17:16:08,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:16:08" (3/3) ... [2022-10-17 17:16:08,032 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2022-10-17 17:16:08,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:16:08,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:16:08,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:16:08,157 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@235d4c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:16:08,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:16:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 29 states have call predecessors, (64), 29 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-10-17 17:16:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 17:16:08,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:08,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:08,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash -561152339, now seen corresponding path program 1 times [2022-10-17 17:16:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:08,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396031948] [2022-10-17 17:16:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:08,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 17:16:08,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:16:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396031948] [2022-10-17 17:16:08,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396031948] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:08,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:08,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:16:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336818463] [2022-10-17 17:16:08,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:08,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:16:08,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:16:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:16:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:16:08,881 INFO L87 Difference]: Start difference. First operand has 217 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 29 states have call predecessors, (64), 29 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:09,085 INFO L93 Difference]: Finished difference Result 342 states and 445 transitions. [2022-10-17 17:16:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:16:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 110 [2022-10-17 17:16:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:09,110 INFO L225 Difference]: With dead ends: 342 [2022-10-17 17:16:09,110 INFO L226 Difference]: Without dead ends: 214 [2022-10-17 17:16:09,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:16:09,130 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:16:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:16:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-10-17 17:16:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2022-10-17 17:16:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 64 states have call successors, (64), 29 states have call predecessors, (64), 29 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-10-17 17:16:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 280 transitions. [2022-10-17 17:16:09,209 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 280 transitions. Word has length 110 [2022-10-17 17:16:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:09,211 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 280 transitions. [2022-10-17 17:16:09,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 280 transitions. [2022-10-17 17:16:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 17:16:09,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:09,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:16:09,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1368091390, now seen corresponding path program 1 times [2022-10-17 17:16:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:09,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207855804] [2022-10-17 17:16:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:09,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 17:16:09,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:16:09,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207855804] [2022-10-17 17:16:09,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207855804] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:09,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:09,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:16:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087687237] [2022-10-17 17:16:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:16:09,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:16:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:16:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:16:09,653 INFO L87 Difference]: Start difference. First operand 214 states and 280 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:09,832 INFO L93 Difference]: Finished difference Result 338 states and 430 transitions. [2022-10-17 17:16:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:16:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 111 [2022-10-17 17:16:09,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:09,838 INFO L225 Difference]: With dead ends: 338 [2022-10-17 17:16:09,839 INFO L226 Difference]: Without dead ends: 216 [2022-10-17 17:16:09,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:16:09,849 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:16:09,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:16:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-10-17 17:16:09,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-10-17 17:16:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 126 states have internal predecessors, (155), 64 states have call successors, (64), 29 states have call predecessors, (64), 29 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2022-10-17 17:16:09,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 282 transitions. [2022-10-17 17:16:09,900 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 282 transitions. Word has length 111 [2022-10-17 17:16:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:09,903 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 282 transitions. [2022-10-17 17:16:09,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 282 transitions. [2022-10-17 17:16:09,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 17:16:09,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:09,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:16:09,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 859589149, now seen corresponding path program 1 times [2022-10-17 17:16:09,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:09,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715635632] [2022-10-17 17:16:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 17:16:10,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:16:10,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715635632] [2022-10-17 17:16:10,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715635632] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:16:10,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:16:10,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:16:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271022421] [2022-10-17 17:16:10,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:16:10,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:16:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:16:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:16:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:16:10,138 INFO L87 Difference]: Start difference. First operand 216 states and 282 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:16:10,292 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2022-10-17 17:16:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:16:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2022-10-17 17:16:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:16:10,297 INFO L225 Difference]: With dead ends: 467 [2022-10-17 17:16:10,297 INFO L226 Difference]: Without dead ends: 269 [2022-10-17 17:16:10,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:16:10,299 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 59 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:16:10,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 494 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:16:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-10-17 17:16:10,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2022-10-17 17:16:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 160 states have internal predecessors, (210), 78 states have call successors, (78), 29 states have call predecessors, (78), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-10-17 17:16:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2022-10-17 17:16:10,326 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 116 [2022-10-17 17:16:10,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:16:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2022-10-17 17:16:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-10-17 17:16:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2022-10-17 17:16:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-17 17:16:10,330 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:16:10,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:16:10,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:16:10,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:16:10,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:16:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 443476845, now seen corresponding path program 1 times [2022-10-17 17:16:10,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:16:10,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101430301] [2022-10-17 17:16:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:10,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:16:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:16:10,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:16:10,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101430301] [2022-10-17 17:16:10,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101430301] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:16:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146543173] [2022-10-17 17:16:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:16:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:16:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:16:10,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:16:10,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb92c66a-eb2b-48c4-b641-03ed87db309e/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:16:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:16:10,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:16:10,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:16:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:16:11,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:16:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 17:16:11,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146543173] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:16:11,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630057972] [2022-10-17 17:16:11,275 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-10-17 17:16:11,275 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:16:11,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:16:11,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:16:11,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs