./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P --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 cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:39:11,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:39:11,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:39:11,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:39:11,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:39:11,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:39:11,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:39:11,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:39:11,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:39:11,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:39:11,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:39:11,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:39:11,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:39:11,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:39:11,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:39:11,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:39:11,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:39:11,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:39:11,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:39:11,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:39:11,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:39:11,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:39:11,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:39:11,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:39:11,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:39:11,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:39:11,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:39:11,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:39:11,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:39:11,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:39:11,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:39:11,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:39:11,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:39:11,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:39:11,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:39:11,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:39:11,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:39:11,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:39:11,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:39:11,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:39:11,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:39:11,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:39:11,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:39:11,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:39:11,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:39:11,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:39:11,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:39:11,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:39:11,670 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:39:11,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:39:11,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:39:11,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:39:11,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:39:11,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:39:11,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:39:11,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:39:11,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:39:11,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:39:11,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:39:11,675 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:39:11,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:39:11,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:39:11,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:39:11,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:39:11,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:39:11,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:39:11,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:39:11,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:39:11,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:39:11,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:39:11,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:39:11,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:39:11,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:39:11,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:39:11,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:11,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:39:11,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:39:11,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:39:11,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:39:11,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:39:11,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:39:11,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:39:11,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:39:11,687 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_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 [2021-11-21 01:39:12,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:39:12,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:39:12,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:39:12,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:39:12,148 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:39:12,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2021-11-21 01:39:12,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/data/95e92c193/8bc6d13f35fa4dac8b841d89799259f0/FLAG9f43d6441 [2021-11-21 01:39:13,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:39:13,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2021-11-21 01:39:13,219 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/data/95e92c193/8bc6d13f35fa4dac8b841d89799259f0/FLAG9f43d6441 [2021-11-21 01:39:13,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/data/95e92c193/8bc6d13f35fa4dac8b841d89799259f0 [2021-11-21 01:39:13,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:39:13,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:39:13,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:13,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:39:13,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:39:13,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:13" (1/1) ... [2021-11-21 01:39:13,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a42d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:13, skipping insertion in model container [2021-11-21 01:39:13,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:39:13" (1/1) ... [2021-11-21 01:39:13,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:39:13,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:39:13,907 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_adfd8e3d-faca-49a6-9843-00ed17a6724a/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2021-11-21 01:39:14,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:14,208 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:39:14,294 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_adfd8e3d-faca-49a6-9843-00ed17a6724a/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2021-11-21 01:39:14,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:39:14,482 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:39:14,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14 WrapperNode [2021-11-21 01:39:14,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:39:14,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:14,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:39:14,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:39:14,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,713 INFO L137 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1312 [2021-11-21 01:39:14,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:39:14,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:39:14,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:39:14,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:39:14,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:39:14,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:39:14,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:39:14,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:39:14,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (1/1) ... [2021-11-21 01:39:14,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:39:14,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:14,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:39:14,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:39:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-21 01:39:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-21 01:39:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-21 01:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-21 01:39:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-21 01:39:15,019 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-21 01:39:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-21 01:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-21 01:39:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-21 01:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-21 01:39:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-21 01:39:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-21 01:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-21 01:39:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-21 01:39:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-21 01:39:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-21 01:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-21 01:39:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-21 01:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-21 01:39:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-21 01:39:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-21 01:39:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-21 01:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-21 01:39:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-21 01:39:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-21 01:39:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-21 01:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-21 01:39:15,024 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-21 01:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-21 01:39:15,024 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-21 01:39:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-21 01:39:15,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-21 01:39:15,025 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-21 01:39:15,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-21 01:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-21 01:39:15,026 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-21 01:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-21 01:39:15,026 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-21 01:39:15,027 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-21 01:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-21 01:39:15,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-21 01:39:15,027 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-21 01:39:15,028 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-21 01:39:15,028 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-21 01:39:15,029 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-21 01:39:15,029 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-21 01:39:15,030 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-21 01:39:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:39:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-21 01:39:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-21 01:39:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-21 01:39:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-21 01:39:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-21 01:39:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-21 01:39:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-21 01:39:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-21 01:39:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-21 01:39:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-21 01:39:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-21 01:39:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-21 01:39:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-21 01:39:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-21 01:39:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-21 01:39:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-21 01:39:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-21 01:39:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-21 01:39:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-21 01:39:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-21 01:39:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-21 01:39:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-21 01:39:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-21 01:39:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-21 01:39:15,043 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-21 01:39:15,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-21 01:39:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-21 01:39:15,044 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-21 01:39:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-21 01:39:15,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-21 01:39:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-21 01:39:15,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-21 01:39:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:39:15,044 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-21 01:39:15,044 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-21 01:39:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-21 01:39:15,045 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-21 01:39:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-21 01:39:15,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-21 01:39:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-21 01:39:15,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-21 01:39:15,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:39:15,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:39:15,426 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:39:15,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:39:16,860 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:39:17,522 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:39:17,522 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:39:17,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:17 BoogieIcfgContainer [2021-11-21 01:39:17,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:39:17,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:39:17,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:39:17,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:39:17,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:39:13" (1/3) ... [2021-11-21 01:39:17,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b947fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:17, skipping insertion in model container [2021-11-21 01:39:17,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:39:14" (2/3) ... [2021-11-21 01:39:17,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b947fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:39:17, skipping insertion in model container [2021-11-21 01:39:17,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:39:17" (3/3) ... [2021-11-21 01:39:17,542 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_productSimulator.cil.c [2021-11-21 01:39:17,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:39:17,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:39:17,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:39:17,645 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 [2021-11-21 01:39:17,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:39:17,680 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) [2021-11-21 01:39:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-21 01:39:17,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:17,702 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] [2021-11-21 01:39:17,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash -94602084, now seen corresponding path program 1 times [2021-11-21 01:39:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889598467] [2021-11-21 01:39:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:17,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:39:18,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:18,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889598467] [2021-11-21 01:39:18,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889598467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:39:18,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159496856] [2021-11-21 01:39:18,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:18,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:39:18,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:18,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:39:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:39:18,447 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 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:39:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:18,928 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2021-11-21 01:39:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:39:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2021-11-21 01:39:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:18,969 INFO L225 Difference]: With dead ends: 732 [2021-11-21 01:39:18,969 INFO L226 Difference]: Without dead ends: 377 [2021-11-21 01:39:18,988 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 [2021-11-21 01:39:18,993 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 6 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:18,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1386 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:39:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-21 01:39:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-21 01:39:19,117 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) [2021-11-21 01:39:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2021-11-21 01:39:19,125 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 101 [2021-11-21 01:39:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2021-11-21 01:39:19,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:39:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2021-11-21 01:39:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-21 01:39:19,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:19,138 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] [2021-11-21 01:39:19,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:39:19,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 318244795, now seen corresponding path program 1 times [2021-11-21 01:39:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744735115] [2021-11-21 01:39:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:19,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-21 01:39:19,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744735115] [2021-11-21 01:39:19,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744735115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:19,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:19,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:39:19,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757793906] [2021-11-21 01:39:19,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:19,307 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 01:39:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:19,546 INFO L93 Difference]: Finished difference Result 727 states and 988 transitions. [2021-11-21 01:39:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 107 [2021-11-21 01:39:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:19,604 INFO L225 Difference]: With dead ends: 727 [2021-11-21 01:39:19,604 INFO L226 Difference]: Without dead ends: 377 [2021-11-21 01:39:19,606 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 [2021-11-21 01:39:19,608 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 474 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:19,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 457 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:19,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-21 01:39:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-21 01:39:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 241 states have internal predecessors, (285), 108 states have call successors, (108), 44 states have call predecessors, (108), 44 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2021-11-21 01:39:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2021-11-21 01:39:19,701 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 107 [2021-11-21 01:39:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:19,702 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2021-11-21 01:39:19,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 01:39:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2021-11-21 01:39:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:39:19,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:19,726 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:19,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:39:19,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:19,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1125132462, now seen corresponding path program 1 times [2021-11-21 01:39:19,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:19,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326947800] [2021-11-21 01:39:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:19,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:39:19,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326947800] [2021-11-21 01:39:19,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326947800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:19,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:19,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:39:19,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667802562] [2021-11-21 01:39:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:19,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:19,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:19,951 INFO L87 Difference]: Start difference. First operand 377 states and 500 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (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) [2021-11-21 01:39:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:20,131 INFO L93 Difference]: Finished difference Result 721 states and 967 transitions. [2021-11-21 01:39:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:20,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (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 113 [2021-11-21 01:39:20,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:20,140 INFO L225 Difference]: With dead ends: 721 [2021-11-21 01:39:20,140 INFO L226 Difference]: Without dead ends: 375 [2021-11-21 01:39:20,143 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 [2021-11-21 01:39:20,154 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 455 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:20,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 470 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-21 01:39:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-11-21 01:39:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 239 states have internal predecessors, (282), 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) [2021-11-21 01:39:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 493 transitions. [2021-11-21 01:39:20,226 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 493 transitions. Word has length 113 [2021-11-21 01:39:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:20,227 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 493 transitions. [2021-11-21 01:39:20,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (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) [2021-11-21 01:39:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 493 transitions. [2021-11-21 01:39:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-21 01:39:20,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:20,241 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:20,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:39:20,242 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:20,243 INFO L85 PathProgramCache]: Analyzing trace with hash 177926787, now seen corresponding path program 1 times [2021-11-21 01:39:20,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6653026] [2021-11-21 01:39:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:20,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-21 01:39:20,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:20,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6653026] [2021-11-21 01:39:20,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6653026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:20,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:20,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:39:20,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396265695] [2021-11-21 01:39:20,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:20,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:20,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:20,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:20,407 INFO L87 Difference]: Start difference. First operand 375 states and 493 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-21 01:39:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:20,593 INFO L93 Difference]: Finished difference Result 713 states and 934 transitions. [2021-11-21 01:39:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 [2021-11-21 01:39:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:20,601 INFO L225 Difference]: With dead ends: 713 [2021-11-21 01:39:20,601 INFO L226 Difference]: Without dead ends: 378 [2021-11-21 01:39:20,603 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 [2021-11-21 01:39:20,616 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 436 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:20,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-21 01:39:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 372. [2021-11-21 01:39:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 224 states have (on average 1.2098214285714286) internal successors, (271), 234 states have internal predecessors, (271), 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) [2021-11-21 01:39:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 476 transitions. [2021-11-21 01:39:20,676 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 476 transitions. Word has length 114 [2021-11-21 01:39:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:20,677 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 476 transitions. [2021-11-21 01:39:20,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-21 01:39:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 476 transitions. [2021-11-21 01:39:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 01:39:20,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:20,682 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] [2021-11-21 01:39:20,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:39:20,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 13633175, now seen corresponding path program 1 times [2021-11-21 01:39:20,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:20,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619973064] [2021-11-21 01:39:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:20,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:39:20,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:20,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619973064] [2021-11-21 01:39:20,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619973064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:20,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:20,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:39:20,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859929002] [2021-11-21 01:39:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:20,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:20,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:20,905 INFO L87 Difference]: Start difference. First operand 372 states and 476 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-21 01:39:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:21,094 INFO L93 Difference]: Finished difference Result 589 states and 747 transitions. [2021-11-21 01:39:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:21,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 126 [2021-11-21 01:39:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:21,099 INFO L225 Difference]: With dead ends: 589 [2021-11-21 01:39:21,100 INFO L226 Difference]: Without dead ends: 374 [2021-11-21 01:39:21,102 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 [2021-11-21 01:39:21,103 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:21,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-21 01:39:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-21 01:39:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 226 states have (on average 1.2079646017699115) internal successors, (273), 236 states have internal predecessors, (273), 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) [2021-11-21 01:39:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 478 transitions. [2021-11-21 01:39:21,143 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 478 transitions. Word has length 126 [2021-11-21 01:39:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:21,144 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 478 transitions. [2021-11-21 01:39:21,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-21 01:39:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 478 transitions. [2021-11-21 01:39:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 01:39:21,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:21,148 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:21,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:39:21,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1914407031, now seen corresponding path program 1 times [2021-11-21 01:39:21,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:21,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303152820] [2021-11-21 01:39:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:21,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:39:21,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303152820] [2021-11-21 01:39:21,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303152820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:21,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:21,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:39:21,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261123685] [2021-11-21 01:39:21,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:21,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:21,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:21,307 INFO L87 Difference]: Start difference. First operand 374 states and 478 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-21 01:39:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:21,500 INFO L93 Difference]: Finished difference Result 748 states and 980 transitions. [2021-11-21 01:39:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:21,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 131 [2021-11-21 01:39:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:21,507 INFO L225 Difference]: With dead ends: 748 [2021-11-21 01:39:21,507 INFO L226 Difference]: Without dead ends: 441 [2021-11-21 01:39:21,510 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 [2021-11-21 01:39:21,511 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 76 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:21,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 861 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:39:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-21 01:39:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 436. [2021-11-21 01:39:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 274 states have (on average 1.2518248175182483) internal successors, (343), 284 states have internal predecessors, (343), 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) [2021-11-21 01:39:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 576 transitions. [2021-11-21 01:39:21,575 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 576 transitions. Word has length 131 [2021-11-21 01:39:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:21,578 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 576 transitions. [2021-11-21 01:39:21,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-21 01:39:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 576 transitions. [2021-11-21 01:39:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-21 01:39:21,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:21,584 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:21,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:39:21,584 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:39:21,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 405896975, now seen corresponding path program 1 times [2021-11-21 01:39:21,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:21,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020373661] [2021-11-21 01:39:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:21,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:39:21,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020373661] [2021-11-21 01:39:21,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020373661] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:39:21,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683147971] [2021-11-21 01:39:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:21,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:21,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:39:21,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adfd8e3d-faca-49a6-9843-00ed17a6724a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:39:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:22,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:39:22,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:39:22,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:39:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-21 01:39:23,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683147971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:39:23,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150141696] [2021-11-21 01:39:23,117 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-21 01:39:23,118 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:39:23,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:39:23,132 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:39:23,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:47:48,499 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2021-11-21 01:48:15,377 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2021-11-21 01:48:44,255 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 280 for LOIs [2021-11-21 01:49:13,033 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 725 for LOIs [2021-11-21 01:49:25,465 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 494 for LOIs [2021-11-21 01:49:51,970 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2021-11-21 01:49:57,496 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 248 for LOIs [2021-11-21 01:49:59,351 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2021-11-21 01:50:04,552 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 286 for LOIs [2021-11-21 01:50:26,915 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 290 for LOIs [2021-11-21 01:50:33,799 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 288 for LOIs [2021-11-21 01:50:41,211 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 288 for LOIs