./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/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_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/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_0f9ef13b-5793-4b2a-b933-331887060310/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_0f9ef13b-5793-4b2a-b933-331887060310/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 f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:15,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:15,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:15,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:15,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:15,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:15,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:15,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:15,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:15,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:15,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:15,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:15,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:15,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:15,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:15,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:15,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:15,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:15,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:15,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:15,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:15,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:15,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:15,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:15,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:15,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:15,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:15,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:15,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:15,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:15,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:15,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:15,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:15,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:15,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:15,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:15,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:15,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:15,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:15,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:15,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:15,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:36:15,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:15,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:15,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:15,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:15,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:15,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:15,904 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:15,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:15,904 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:15,904 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:36:15,905 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:15,906 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:15,906 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:36:15,906 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:36:15,906 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:15,907 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:36:15,907 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:36:15,907 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:36:15,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:15,908 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:36:15,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:36:15,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:36:15,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:15,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:15,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:15,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:15,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:36:15,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:15,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:15,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:15,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:15,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:15,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:15,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:15,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:15,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:15,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:36:15,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:36:15,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:15,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:15,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:15,914 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_0f9ef13b-5793-4b2a-b933-331887060310/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b [2021-11-23 03:36:16,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:16,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:16,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:16,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:16,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:16,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2021-11-23 03:36:16,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/data/504847a0e/99d823103e3740a3bcae71087d162486/FLAG5d6a2c9dc [2021-11-23 03:36:16,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:16,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2021-11-23 03:36:16,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/data/504847a0e/99d823103e3740a3bcae71087d162486/FLAG5d6a2c9dc [2021-11-23 03:36:17,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/data/504847a0e/99d823103e3740a3bcae71087d162486 [2021-11-23 03:36:17,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:17,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:17,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:17,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:17,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:17,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:17" (1/1) ... [2021-11-23 03:36:17,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0fda71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:17, skipping insertion in model container [2021-11-23 03:36:17,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:17" (1/1) ... [2021-11-23 03:36:17,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:17,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:17,623 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_0f9ef13b-5793-4b2a-b933-331887060310/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2021-11-23 03:36:17,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:17,807 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:17,884 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_0f9ef13b-5793-4b2a-b933-331887060310/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2021-11-23 03:36:17,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:18,002 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:18,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18 WrapperNode [2021-11-23 03:36:18,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:18,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:18,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:18,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:18,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,150 INFO L137 Inliner]: procedures = 131, calls = 228, calls flagged for inlining = 54, calls inlined = 47, statements flattened = 930 [2021-11-23 03:36:18,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:18,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:18,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:18,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:18,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:18,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:18,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:18,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:18,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (1/1) ... [2021-11-23 03:36:18,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:18,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:18,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 03:36:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 03:36:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:36:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:36:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 03:36:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 03:36:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:36:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:36:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 03:36:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 03:36:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:36:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:36:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:36:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:36:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:36:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:36:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:36:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:36:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 03:36:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 03:36:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:36:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:36:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:36:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:36:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:36:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:36:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:36:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:36:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:36:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:36:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:36:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 03:36:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 03:36:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:36:18,383 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:36:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:36:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:36:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:36:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:36:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:36:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:36:18,384 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 03:36:18,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 03:36:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 03:36:18,386 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 03:36:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 03:36:18,387 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 03:36:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:36:18,388 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:36:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 03:36:18,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 03:36:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:36:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:36:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:36:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:36:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:36:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:36:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:36:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:36:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:36:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:18,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:18,657 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:18,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:36:19,594 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:36:20,187 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:36:20,187 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:36:20,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:20 BoogieIcfgContainer [2021-11-23 03:36:20,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:36:20,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:36:20,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:36:20,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:36:20,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:17" (1/3) ... [2021-11-23 03:36:20,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9292816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:20, skipping insertion in model container [2021-11-23 03:36:20,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:18" (2/3) ... [2021-11-23 03:36:20,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9292816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:20, skipping insertion in model container [2021-11-23 03:36:20,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:20" (3/3) ... [2021-11-23 03:36:20,203 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2021-11-23 03:36:20,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:36:20,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:36:20,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:36:20,285 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 03:36:20,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:36:20,314 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) [2021-11-23 03:36:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 03:36:20,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:20,342 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:20,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -561152339, now seen corresponding path program 1 times [2021-11-23 03:36:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:20,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057134360] [2021-11-23 03:36:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:20,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:36:20,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:20,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057134360] [2021-11-23 03:36:20,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057134360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:20,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:20,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:36:20,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946707339] [2021-11-23 03:36:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:20,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:36:20,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:36:20,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:36:20,886 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) [2021-11-23 03:36:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:21,085 INFO L93 Difference]: Finished difference Result 342 states and 445 transitions. [2021-11-23 03:36:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:36:21,089 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 [2021-11-23 03:36:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:21,106 INFO L225 Difference]: With dead ends: 342 [2021-11-23 03:36:21,106 INFO L226 Difference]: Without dead ends: 214 [2021-11-23 03:36:21,116 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 03:36:21,121 INFO L933 BasicCegarLoop]: 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 [2021-11-23 03:36:21,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:36:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-23 03:36:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-23 03:36:21,214 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) [2021-11-23 03:36:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 280 transitions. [2021-11-23 03:36:21,222 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 280 transitions. Word has length 110 [2021-11-23 03:36:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:21,224 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 280 transitions. [2021-11-23 03:36:21,224 INFO L471 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) [2021-11-23 03:36:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 280 transitions. [2021-11-23 03:36:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 03:36:21,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:21,233 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:21,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:36:21,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1368091390, now seen corresponding path program 1 times [2021-11-23 03:36:21,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:21,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852621711] [2021-11-23 03:36:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:21,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:36:21,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:21,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852621711] [2021-11-23 03:36:21,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852621711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:21,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:21,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:21,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885736782] [2021-11-23 03:36:21,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:21,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:21,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:21,380 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) [2021-11-23 03:36:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:21,498 INFO L93 Difference]: Finished difference Result 338 states and 430 transitions. [2021-11-23 03:36:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:21,499 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 [2021-11-23 03:36:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:21,502 INFO L225 Difference]: With dead ends: 338 [2021-11-23 03:36:21,502 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 03:36:21,504 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 03:36:21,505 INFO L933 BasicCegarLoop]: 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 [2021-11-23 03:36:21,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 483 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:36:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 03:36:21,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-23 03:36:21,528 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) [2021-11-23 03:36:21,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 282 transitions. [2021-11-23 03:36:21,531 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 282 transitions. Word has length 111 [2021-11-23 03:36:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:21,532 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 282 transitions. [2021-11-23 03:36:21,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (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) [2021-11-23 03:36:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 282 transitions. [2021-11-23 03:36:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 03:36:21,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:21,539 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:21,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:36:21,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 859589149, now seen corresponding path program 1 times [2021-11-23 03:36:21,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:21,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030890144] [2021-11-23 03:36:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:21,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 03:36:21,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:21,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030890144] [2021-11-23 03:36:21,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030890144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:21,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:21,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:21,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277122495] [2021-11-23 03:36:21,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:21,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:21,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:21,763 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) [2021-11-23 03:36:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:21,930 INFO L93 Difference]: Finished difference Result 467 states and 631 transitions. [2021-11-23 03:36:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:21,931 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 [2021-11-23 03:36:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:21,936 INFO L225 Difference]: With dead ends: 467 [2021-11-23 03:36:21,936 INFO L226 Difference]: Without dead ends: 269 [2021-11-23 03:36:21,937 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 03:36:21,944 INFO L933 BasicCegarLoop]: 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 [2021-11-23 03:36:21,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 494 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:36:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-23 03:36:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 264. [2021-11-23 03:36:21,993 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) [2021-11-23 03:36:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2021-11-23 03:36:21,998 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 116 [2021-11-23 03:36:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:22,000 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2021-11-23 03:36:22,001 INFO L471 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) [2021-11-23 03:36:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2021-11-23 03:36:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 03:36:22,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:22,009 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:22,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:36:22,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 443476845, now seen corresponding path program 1 times [2021-11-23 03:36:22,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407291663] [2021-11-23 03:36:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:22,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:36:22,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407291663] [2021-11-23 03:36:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407291663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:36:22,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109505763] [2021-11-23 03:36:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:22,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:22,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:36:22,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:36:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:22,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:36:22,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:36:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109505763] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:36:23,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1097108357] [2021-11-23 03:36:23,079 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2021-11-23 03:36:23,079 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:36:23,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:36:23,089 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:36:23,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:36:46,946 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:36:47,320 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2021-11-23 03:36:49,318 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 03:36:49,378 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:36:49,757 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2021-11-23 03:36:52,875 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 260 for LOIs [2021-11-23 03:37:04,401 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 245 for LOIs [2021-11-23 03:37:04,979 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2021-11-23 03:37:05,023 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 455 for LOIs [2021-11-23 03:37:05,508 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 243 for LOIs [2021-11-23 03:37:05,583 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2021-11-23 03:37:06,043 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 03:37:07,500 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 245 for LOIs [2021-11-23 03:37:07,542 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 248 for LOIs [2021-11-23 03:37:07,591 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:38:11,953 WARN L227 SmtUtils]: Spent 18.83s on a formula simplification. DAG size of input: 577 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:22,552 WARN L227 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 579 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:41,243 WARN L227 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:02,830 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 455 DAG size of output: 260 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:10,822 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 481 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:33,927 WARN L227 SmtUtils]: Spent 10.48s on a formula simplification. DAG size of input: 437 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:47,889 WARN L227 SmtUtils]: Spent 11.17s on a formula simplification. DAG size of input: 456 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:40:26,253 WARN L227 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 525 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:03,287 WARN L227 SmtUtils]: Spent 13.22s on a formula simplification. DAG size of input: 580 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:12,794 WARN L227 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 577 DAG size of output: 388 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:19,725 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 571 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:38,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1097108357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:41:38,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:41:38,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [4, 4, 4] total 78 [2021-11-23 03:41:38,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281949821] [2021-11-23 03:41:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:41:38,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-23 03:41:38,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:41:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-23 03:41:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=5745, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 03:41:38,823 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-11-23 03:41:50,994 WARN L227 SmtUtils]: Spent 7.60s on a formula simplification. DAG size of input: 573 DAG size of output: 419 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:42:00,318 WARN L227 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 580 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:42:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:42:51,032 INFO L93 Difference]: Finished difference Result 732 states and 1066 transitions. [2021-11-23 03:42:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-23 03:42:51,034 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 106 [2021-11-23 03:42:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:42:51,039 INFO L225 Difference]: With dead ends: 732 [2021-11-23 03:42:51,040 INFO L226 Difference]: Without dead ends: 486 [2021-11-23 03:42:51,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 302.3s TimeCoverageRelationStatistics Valid=318, Invalid=7164, Unknown=0, NotChecked=0, Total=7482 [2021-11-23 03:42:51,046 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 228 mSDsluCounter, 10636 mSDsCounter, 0 mSdLazyCounter, 14038 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 10632 SdHoareTripleChecker+Invalid, 14080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 14038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:42:51,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 10632 Invalid, 14080 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [42 Valid, 14038 Invalid, 0 Unknown, 0 Unchecked, 40.3s Time] [2021-11-23 03:42:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-23 03:42:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 400. [2021-11-23 03:42:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 256 states have (on average 1.37890625) internal successors, (353), 261 states have internal predecessors, (353), 103 states have call successors, (103), 42 states have call predecessors, (103), 40 states have return successors, (103), 98 states have call predecessors, (103), 102 states have call successors, (103) [2021-11-23 03:42:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 559 transitions. [2021-11-23 03:42:51,195 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 559 transitions. Word has length 106 [2021-11-23 03:42:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:42:51,196 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 559 transitions. [2021-11-23 03:42:51,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 44 states have internal predecessors, (54), 22 states have call successors, (23), 15 states have call predecessors, (23), 12 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2021-11-23 03:42:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 559 transitions. [2021-11-23 03:42:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 03:42:51,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:42:51,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2021-11-23 03:42:51,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:42:51,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:42:51,428 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:42:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:42:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1628290052, now seen corresponding path program 1 times [2021-11-23 03:42:51,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:42:51,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804495429] [2021-11-23 03:42:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:51,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:42:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:51,552 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 03:42:51,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:42:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804495429] [2021-11-23 03:42:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804495429] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:42:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796149125] [2021-11-23 03:42:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:42:51,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:42:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:42:51,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:42:51,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f9ef13b-5793-4b2a-b933-331887060310/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:42:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:42:51,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:42:51,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:42:52,085 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 03:42:52,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:42:52,360 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 03:42:52,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796149125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:42:52,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662252684] [2021-11-23 03:42:52,378 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2021-11-23 03:42:52,378 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:42:52,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:42:52,380 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:42:52,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:43:11,453 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:43:11,706 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2021-11-23 03:43:13,321 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 03:43:13,361 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:43:13,609 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2021-11-23 03:43:16,380 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 260 for LOIs [2021-11-23 03:43:32,928 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2021-11-23 03:43:34,676 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 455 for LOIs [2021-11-23 03:43:35,164 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 243 for LOIs [2021-11-23 03:43:35,235 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 437 for LOIs [2021-11-23 03:43:35,731 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 03:43:37,221 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2021-11-23 03:43:37,266 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 245 for LOIs [2021-11-23 03:43:37,310 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 248 for LOIs [2021-11-23 03:43:37,360 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:44:40,744 WARN L227 SmtUtils]: Spent 20.80s on a formula simplification. DAG size of input: 577 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:44:52,103 WARN L227 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 579 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:13,404 WARN L227 SmtUtils]: Spent 13.26s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:38,942 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 455 DAG size of output: 260 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:47,912 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 481 DAG size of output: 276 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:13,838 WARN L227 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 437 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:29,208 WARN L227 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 456 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:47:08,161 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 525 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:47:24,390 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 550 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:47:38,954 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 564 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:01,725 WARN L227 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 573 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)