./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:05:41,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:05:41,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:05:41,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:05:41,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:05:41,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:05:41,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:05:41,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:05:41,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:05:41,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:05:41,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:05:41,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:05:41,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:05:41,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:05:41,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:05:41,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:05:41,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:05:41,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:05:41,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:05:41,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:05:41,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:05:41,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:05:41,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:05:41,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:05:41,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:05:41,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:05:41,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:05:41,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:05:41,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:05:41,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:05:41,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:05:41,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:05:41,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:05:41,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:05:41,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:05:41,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:05:41,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:05:41,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:05:41,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:05:41,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:05:41,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:05:41,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:05:41,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:05:41,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:05:41,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:05:41,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:05:41,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:05:41,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:05:41,798 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:05:41,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:05:41,798 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:05:41,798 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:05:41,798 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:05:41,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:05:41,799 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:05:41,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:05:41,799 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:05:41,799 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:05:41,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:05:41,800 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:05:41,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:05:41,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:05:41,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:05:41,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:05:41,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:05:41,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:05:41,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:05:41,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:05:41,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:05:41,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:05:41,803 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:05:41,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:05:41,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:05:41,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:05:41,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:41,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:05:41,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:05:41,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:05:41,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:05:41,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:05:41,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:05:41,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:05:41,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:05:41,805 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_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-25 19:05:42,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:05:42,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:05:42,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:05:42,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:05:42,186 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:05:42,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-25 19:05:42,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/data/c273caf93/0a67aced1f0d4ea48cc5fccd05453395/FLAG336fe8165 [2021-11-25 19:05:43,035 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:05:43,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-25 19:05:43,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/data/c273caf93/0a67aced1f0d4ea48cc5fccd05453395/FLAG336fe8165 [2021-11-25 19:05:43,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/data/c273caf93/0a67aced1f0d4ea48cc5fccd05453395 [2021-11-25 19:05:43,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:05:43,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:05:43,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:43,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:05:43,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:05:43,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:43" (1/1) ... [2021-11-25 19:05:43,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2a695d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:43, skipping insertion in model container [2021-11-25 19:05:43,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:05:43" (1/1) ... [2021-11-25 19:05:43,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:05:43,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:05:44,016 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_cc20cb56-ff78-446a-b037-4178572b235d/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-25 19:05:44,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:44,039 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:05:44,200 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_cc20cb56-ff78-446a-b037-4178572b235d/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-25 19:05:44,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:05:44,249 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:05:44,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44 WrapperNode [2021-11-25 19:05:44,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:05:44,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:44,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:05:44,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:05:44,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,370 INFO L137 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2021-11-25 19:05:44,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:05:44,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:05:44,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:05:44,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:05:44,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:05:44,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:05:44,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:05:44,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:05:44,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (1/1) ... [2021-11-25 19:05:44,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:05:44,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:44,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:05:44,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:05:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 19:05:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 19:05:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 19:05:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 19:05:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 19:05:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 19:05:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 19:05:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 19:05:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 19:05:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 19:05:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 19:05:44,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 19:05:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 19:05:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 19:05:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 19:05:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 19:05:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 19:05:44,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 19:05:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 19:05:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 19:05:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 19:05:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 19:05:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 19:05:44,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 19:05:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 19:05:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 19:05:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 19:05:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 19:05:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 19:05:44,630 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 19:05:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 19:05:44,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 19:05:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 19:05:44,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 19:05:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 19:05:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 19:05:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 19:05:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 19:05:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 19:05:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 19:05:44,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 19:05:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 19:05:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 19:05:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 19:05:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 19:05:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 19:05:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 19:05:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:05:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 19:05:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 19:05:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 19:05:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 19:05:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 19:05:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 19:05:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 19:05:44,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 19:05:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 19:05:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 19:05:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 19:05:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 19:05:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 19:05:44,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 19:05:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 19:05:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 19:05:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 19:05:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 19:05:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 19:05:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 19:05:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 19:05:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 19:05:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 19:05:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 19:05:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 19:05:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 19:05:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 19:05:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 19:05:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 19:05:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 19:05:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 19:05:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 19:05:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:05:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 19:05:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 19:05:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 19:05:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 19:05:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 19:05:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 19:05:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 19:05:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 19:05:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:05:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:05:44,975 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:05:44,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:05:46,011 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:05:46,670 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:05:46,670 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:05:46,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:46 BoogieIcfgContainer [2021-11-25 19:05:46,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:05:46,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:05:46,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:05:46,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:05:46,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:05:43" (1/3) ... [2021-11-25 19:05:46,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b099945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:46, skipping insertion in model container [2021-11-25 19:05:46,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:05:44" (2/3) ... [2021-11-25 19:05:46,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b099945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:05:46, skipping insertion in model container [2021-11-25 19:05:46,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:05:46" (3/3) ... [2021-11-25 19:05:46,685 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-25 19:05:46,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:05:46,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:05:46,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:05:46,757 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:05:46,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:05:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-25 19:05:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 19:05:46,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:46,817 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:46,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 773592641, now seen corresponding path program 1 times [2021-11-25 19:05:46,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117227747] [2021-11-25 19:05:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:46,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:05:47,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117227747] [2021-11-25 19:05:47,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117227747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:47,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:47,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:05:47,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933522388] [2021-11-25 19:05:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:47,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:05:47,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:05:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:05:47,503 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 19:05:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:47,942 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2021-11-25 19:05:47,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:05:47,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2021-11-25 19:05:47,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:47,974 INFO L225 Difference]: With dead ends: 732 [2021-11-25 19:05:47,974 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 19:05:47,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:47,991 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 6 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:47,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1383 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:05:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 19:05:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 19:05:48,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-25 19:05:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2021-11-25 19:05:48,155 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2021-11-25 19:05:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:48,157 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2021-11-25 19:05:48,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 19:05:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2021-11-25 19:05:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 19:05:48,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:48,166 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:48,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:05:48,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 762710508, now seen corresponding path program 1 times [2021-11-25 19:05:48,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237562825] [2021-11-25 19:05:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:48,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:05:48,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:48,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237562825] [2021-11-25 19:05:48,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237562825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:48,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:48,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:48,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067309043] [2021-11-25 19:05:48,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:48,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:48,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:48,335 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:05:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:48,542 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2021-11-25 19:05:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:48,543 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 103 [2021-11-25 19:05:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:48,547 INFO L225 Difference]: With dead ends: 731 [2021-11-25 19:05:48,548 INFO L226 Difference]: Without dead ends: 375 [2021-11-25 19:05:48,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:48,557 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 476 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:48,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 442 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:05:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-25 19:05:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-11-25 19:05:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 223 states have (on average 1.2690582959641257) internal successors, (283), 240 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-25 19:05:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2021-11-25 19:05:48,619 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2021-11-25 19:05:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:48,622 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2021-11-25 19:05:48,622 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 19:05:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2021-11-25 19:05:48,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 19:05:48,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:48,629 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:48,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:05:48,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:48,631 INFO L85 PathProgramCache]: Analyzing trace with hash 753621541, now seen corresponding path program 1 times [2021-11-25 19:05:48,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:48,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557329396] [2021-11-25 19:05:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:48,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:05:48,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557329396] [2021-11-25 19:05:48,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557329396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:48,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:48,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:48,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398251597] [2021-11-25 19:05:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:48,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:48,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:48,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:48,819 INFO L87 Difference]: Start difference. First operand 375 states and 496 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:05:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:48,958 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2021-11-25 19:05:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:48,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2021-11-25 19:05:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:48,965 INFO L225 Difference]: With dead ends: 724 [2021-11-25 19:05:48,965 INFO L226 Difference]: Without dead ends: 374 [2021-11-25 19:05:48,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:48,975 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 463 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:48,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 461 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:05:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-25 19:05:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-25 19:05:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 239 states have internal predecessors, (281), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-25 19:05:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2021-11-25 19:05:49,064 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2021-11-25 19:05:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:49,064 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2021-11-25 19:05:49,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:05:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2021-11-25 19:05:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 19:05:49,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:49,068 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:49,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:05:49,069 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 446507475, now seen corresponding path program 1 times [2021-11-25 19:05:49,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:49,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510241293] [2021-11-25 19:05:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:49,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-25 19:05:49,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510241293] [2021-11-25 19:05:49,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510241293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:49,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:49,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:49,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126831780] [2021-11-25 19:05:49,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:49,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:49,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,164 INFO L87 Difference]: Start difference. First operand 374 states and 492 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:05:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:49,301 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2021-11-25 19:05:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2021-11-25 19:05:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:49,305 INFO L225 Difference]: With dead ends: 705 [2021-11-25 19:05:49,306 INFO L226 Difference]: Without dead ends: 371 [2021-11-25 19:05:49,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,308 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 436 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:49,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 437 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:05:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-25 19:05:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-25 19:05:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.210762331838565) internal successors, (270), 234 states have internal predecessors, (270), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-25 19:05:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2021-11-25 19:05:49,338 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2021-11-25 19:05:49,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:49,339 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2021-11-25 19:05:49,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:05:49,340 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2021-11-25 19:05:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 19:05:49,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:49,343 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:49,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:05:49,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1168996932, now seen corresponding path program 1 times [2021-11-25 19:05:49,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489613533] [2021-11-25 19:05:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:49,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:05:49,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:49,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489613533] [2021-11-25 19:05:49,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489613533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:49,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:49,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:49,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055425204] [2021-11-25 19:05:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:49,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:49,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,440 INFO L87 Difference]: Start difference. First operand 371 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:05:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:49,622 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2021-11-25 19:05:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2021-11-25 19:05:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:49,627 INFO L225 Difference]: With dead ends: 587 [2021-11-25 19:05:49,627 INFO L226 Difference]: Without dead ends: 373 [2021-11-25 19:05:49,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,629 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:49,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 843 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:05:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-25 19:05:49,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-25 19:05:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.208888888888889) internal successors, (272), 236 states have internal predecessors, (272), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2021-11-25 19:05:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2021-11-25 19:05:49,661 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2021-11-25 19:05:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2021-11-25 19:05:49,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:05:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2021-11-25 19:05:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 19:05:49,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:49,666 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:05:49,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 687305607, now seen corresponding path program 1 times [2021-11-25 19:05:49,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:49,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022051807] [2021-11-25 19:05:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:49,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:05:49,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:49,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022051807] [2021-11-25 19:05:49,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022051807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:49,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:49,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:49,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833432912] [2021-11-25 19:05:49,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:49,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:49,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:49,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:49,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,769 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:05:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:49,926 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2021-11-25 19:05:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 132 [2021-11-25 19:05:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:49,932 INFO L225 Difference]: With dead ends: 746 [2021-11-25 19:05:49,932 INFO L226 Difference]: Without dead ends: 440 [2021-11-25 19:05:49,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:49,935 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:49,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 864 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:05:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-25 19:05:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2021-11-25 19:05:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.2527472527472527) internal successors, (342), 284 states have internal predecessors, (342), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2021-11-25 19:05:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2021-11-25 19:05:49,979 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2021-11-25 19:05:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:49,980 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2021-11-25 19:05:49,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:05:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2021-11-25 19:05:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 19:05:49,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:49,985 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:49,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:05:49,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1363662011, now seen corresponding path program 1 times [2021-11-25 19:05:49,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:49,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938603297] [2021-11-25 19:05:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:49,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:05:50,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938603297] [2021-11-25 19:05:50,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938603297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:05:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641007913] [2021-11-25 19:05:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:50,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:05:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:50,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:05:50,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:05:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:50,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:05:50,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:05:50,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:05:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:05:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641007913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:05:51,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [315317974] [2021-11-25 19:05:51,176 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-25 19:05:51,177 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:05:51,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:05:51,193 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:05:51,207 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:07:19,716 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 711 for LOIs [2021-11-25 19:07:21,143 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-25 19:07:22,785 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2021-11-25 19:07:24,962 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 19:07:25,232 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2021-11-25 19:07:26,153 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 455 for LOIs [2021-11-25 19:07:26,435 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2021-11-25 19:07:26,497 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-25 19:07:26,769 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2021-11-25 19:07:26,931 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2021-11-25 19:07:27,108 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2021-11-25 19:07:33,965 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 281 for LOIs [2021-11-25 19:07:35,317 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2021-11-25 19:07:36,952 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 419 for LOIs [2021-11-25 19:07:37,167 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2021-11-25 19:07:37,209 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:49,049 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 455 DAG size of output: 315 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:08:54,463 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 478 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:04,520 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:18,414 WARN L227 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 739 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:29,023 WARN L227 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 745 DAG size of output: 592 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:36,977 WARN L227 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 749 DAG size of output: 544 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:44,168 WARN L227 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 711 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:10:09,708 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 560 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:10:17,244 WARN L227 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 562 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:10:32,171 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 559 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:10:37,751 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 554 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:10:53,162 WARN L227 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 468 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:11:41,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [315317974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:41,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:41,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [4, 4, 4] total 91 [2021-11-25 19:11:41,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934099896] [2021-11-25 19:11:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:41,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-25 19:11:41,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-25 19:11:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=7872, Unknown=0, NotChecked=0, Total=8190 [2021-11-25 19:11:41,419 INFO L87 Difference]: Start difference. First operand 435 states and 575 transitions. Second operand has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-25 19:11:48,238 WARN L227 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:11:55,146 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:02,143 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:09,021 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:15,902 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:22,880 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:29,772 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:36,657 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:13:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:58,060 INFO L93 Difference]: Finished difference Result 1147 states and 1601 transitions. [2021-11-25 19:13:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-25 19:13:58,060 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) Word has length 133 [2021-11-25 19:13:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:58,067 INFO L225 Difference]: With dead ends: 1147 [2021-11-25 19:13:58,068 INFO L226 Difference]: Without dead ends: 742 [2021-11-25 19:13:58,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 306 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4668 ImplicationChecksByTransitivity, 328.8s TimeCoverageRelationStatistics Valid=500, Invalid=11710, Unknown=0, NotChecked=0, Total=12210 [2021-11-25 19:13:58,075 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 614 mSDsluCounter, 12930 mSDsCounter, 0 mSdLazyCounter, 18375 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 13064 SdHoareTripleChecker+Invalid, 18464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 18375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:58,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 13064 Invalid, 18464 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [89 Valid, 18375 Invalid, 0 Unknown, 0 Unchecked, 51.2s Time] [2021-11-25 19:13:58,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-25 19:13:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 583. [2021-11-25 19:13:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 387 states have (on average 1.2945736434108528) internal successors, (501), 398 states have internal predecessors, (501), 136 states have call successors, (136), 64 states have call predecessors, (136), 59 states have return successors, (135), 129 states have call predecessors, (135), 135 states have call successors, (135) [2021-11-25 19:13:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 772 transitions. [2021-11-25 19:13:58,245 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 772 transitions. Word has length 133 [2021-11-25 19:13:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:58,248 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 772 transitions. [2021-11-25 19:13:58,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 56 states have internal predecessors, (69), 26 states have call successors, (28), 16 states have call predecessors, (28), 11 states have return successors, (23), 23 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-25 19:13:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 772 transitions. [2021-11-25 19:13:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 19:13:58,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:58,253 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:58,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:13:58,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:58,459 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash -98183853, now seen corresponding path program 1 times [2021-11-25 19:13:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:58,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189994137] [2021-11-25 19:13:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:58,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:13:58,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189994137] [2021-11-25 19:13:58,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189994137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:58,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:58,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:58,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144728119] [2021-11-25 19:13:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:58,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:58,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:58,548 INFO L87 Difference]: Start difference. First operand 583 states and 772 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:59,010 INFO L93 Difference]: Finished difference Result 1333 states and 1809 transitions. [2021-11-25 19:13:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 134 [2021-11-25 19:13:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:59,020 INFO L225 Difference]: With dead ends: 1333 [2021-11-25 19:13:59,020 INFO L226 Difference]: Without dead ends: 929 [2021-11-25 19:13:59,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:59,024 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 441 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:59,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 1130 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-25 19:13:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 927. [2021-11-25 19:13:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 603 states have (on average 1.2885572139303483) internal successors, (777), 621 states have internal predecessors, (777), 226 states have call successors, (226), 102 states have call predecessors, (226), 97 states have return successors, (240), 218 states have call predecessors, (240), 224 states have call successors, (240) [2021-11-25 19:13:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1243 transitions. [2021-11-25 19:13:59,318 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1243 transitions. Word has length 134 [2021-11-25 19:13:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:59,319 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1243 transitions. [2021-11-25 19:13:59,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1243 transitions. [2021-11-25 19:13:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 19:13:59,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:59,324 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:59,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:13:59,325 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2002086776, now seen corresponding path program 1 times [2021-11-25 19:13:59,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:59,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553308926] [2021-11-25 19:13:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:59,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:13:59,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:59,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553308926] [2021-11-25 19:13:59,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553308926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:59,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:59,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:59,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474757324] [2021-11-25 19:13:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:59,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:59,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:59,401 INFO L87 Difference]: Start difference. First operand 927 states and 1243 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:59,900 INFO L93 Difference]: Finished difference Result 1876 states and 2527 transitions. [2021-11-25 19:13:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:59,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2021-11-25 19:13:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:59,912 INFO L225 Difference]: With dead ends: 1876 [2021-11-25 19:13:59,912 INFO L226 Difference]: Without dead ends: 1291 [2021-11-25 19:13:59,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:59,918 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 440 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:59,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1168 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-25 19:14:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1289. [2021-11-25 19:14:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 809 states have (on average 1.2521631644004945) internal successors, (1013), 835 states have internal predecessors, (1013), 324 states have call successors, (324), 158 states have call predecessors, (324), 155 states have return successors, (377), 319 states have call predecessors, (377), 317 states have call successors, (377) [2021-11-25 19:14:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1714 transitions. [2021-11-25 19:14:00,202 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1714 transitions. Word has length 135 [2021-11-25 19:14:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:14:00,203 INFO L470 AbstractCegarLoop]: Abstraction has 1289 states and 1714 transitions. [2021-11-25 19:14:00,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:14:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1714 transitions. [2021-11-25 19:14:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:14:00,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:14:00,208 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:14:00,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:14:00,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:14:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:14:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2106639352, now seen corresponding path program 1 times [2021-11-25 19:14:00,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:14:00,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478087425] [2021-11-25 19:14:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:00,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:14:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:14:00,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:14:00,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478087425] [2021-11-25 19:14:00,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478087425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:14:00,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065454558] [2021-11-25 19:14:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:14:00,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:14:00,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:14:00,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:14:00,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc20cb56-ff78-446a-b037-4178572b235d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:14:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:14:00,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:14:00,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:14:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:14:00,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-25 19:14:01,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065454558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:14:01,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572520671] [2021-11-25 19:14:01,274 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2021-11-25 19:14:01,274 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:14:01,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:14:01,276 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:14:01,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:18,274 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 711 for LOIs [2021-11-25 19:15:19,492 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-25 19:15:20,966 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2021-11-25 19:15:22,930 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-25 19:15:23,196 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2021-11-25 19:15:24,047 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 441 for LOIs [2021-11-25 19:15:24,302 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2021-11-25 19:15:24,348 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-25 19:15:24,598 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 279 for LOIs [2021-11-25 19:15:24,786 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2021-11-25 19:15:25,629 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2021-11-25 19:15:29,876 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2021-11-25 19:15:33,507 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2021-11-25 19:15:35,133 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 419 for LOIs [2021-11-25 19:15:35,313 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2021-11-25 19:15:35,386 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2021-11-25 19:15:35,449 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:17:03,645 WARN L227 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 750 DAG size of output: 565 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:17:19,782 WARN L227 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 739 DAG size of output: 531 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:17:32,361 WARN L227 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 745 DAG size of output: 592 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)