./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/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_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/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_0d597cee-561a-4033-afa0-41df73755bf2/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_0d597cee-561a-4033-afa0-41df73755bf2/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:44:23,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:44:23,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:44:23,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:44:23,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:44:23,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:44:23,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:44:23,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:44:23,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:44:23,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:44:23,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:44:23,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:44:23,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:44:23,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:44:23,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:44:23,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:44:23,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:44:23,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:44:23,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:44:23,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:44:23,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:44:23,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:44:23,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:44:23,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:44:23,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:44:23,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:44:23,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:44:23,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:44:23,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:44:23,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:44:23,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:44:23,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:44:23,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:44:23,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:44:23,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:44:23,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:44:23,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:44:23,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:44:23,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:44:23,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:44:23,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:44:23,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:44:23,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:44:23,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:44:23,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:44:23,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:44:23,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:44:23,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:44:23,951 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:44:23,952 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:44:23,952 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:44:23,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:44:23,952 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:44:23,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:44:23,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:44:23,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:44:23,959 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:44:23,959 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:44:23,959 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:44:23,959 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:44:23,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:44:23,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:44:23,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:44:23,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:44:23,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:44:23,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:44:23,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:44:23,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:44:23,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:44:23,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:44:23,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:44:23,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:44:23,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:44:23,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:44:23,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:44:23,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:44:23,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:44:23,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:44:23,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:44:23,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:44:23,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:44:23,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:44:23,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:44:23,970 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_0d597cee-561a-4033-afa0-41df73755bf2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-20 23:44:24,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:44:24,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:44:24,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:44:24,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:44:24,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:44:24,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-20 23:44:24,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/data/c40b407de/2a86ed8e92304ff0ada289b7504d5c16/FLAG6506999c4 [2021-11-20 23:44:25,103 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:44:25,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-20 23:44:25,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/data/c40b407de/2a86ed8e92304ff0ada289b7504d5c16/FLAG6506999c4 [2021-11-20 23:44:25,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/data/c40b407de/2a86ed8e92304ff0ada289b7504d5c16 [2021-11-20 23:44:25,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:44:25,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:44:25,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:44:25,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:44:25,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:44:25,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:25" (1/1) ... [2021-11-20 23:44:25,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350a19c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:25, skipping insertion in model container [2021-11-20 23:44:25,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:25" (1/1) ... [2021-11-20 23:44:25,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:44:25,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:44:26,024 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_0d597cee-561a-4033-afa0-41df73755bf2/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-20 23:44:26,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:44:26,038 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:44:26,135 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_0d597cee-561a-4033-afa0-41df73755bf2/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-20 23:44:26,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:44:26,174 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:44:26,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26 WrapperNode [2021-11-20 23:44:26,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:44:26,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:44:26,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:44:26,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:44:26,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,311 INFO L137 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2021-11-20 23:44:26,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:44:26,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:44:26,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:44:26,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:44:26,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:44:26,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:44:26,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:44:26,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:44:26,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (1/1) ... [2021-11-20 23:44:26,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:44:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:26,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:44:26,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:44:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-20 23:44:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-20 23:44:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-20 23:44:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-20 23:44:26,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-20 23:44:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-20 23:44:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-20 23:44:26,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-20 23:44:26,529 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-20 23:44:26,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-20 23:44:26,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-20 23:44:26,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-20 23:44:26,530 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-20 23:44:26,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-20 23:44:26,530 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-20 23:44:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-20 23:44:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-20 23:44:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-20 23:44:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-20 23:44:26,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-20 23:44:26,531 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-20 23:44:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-20 23:44:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-20 23:44:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-20 23:44:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-20 23:44:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-20 23:44:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-20 23:44:26,533 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-20 23:44:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-20 23:44:26,533 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-20 23:44:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-20 23:44:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-20 23:44:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-20 23:44:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-20 23:44:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-20 23:44:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-20 23:44:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-20 23:44:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-20 23:44:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-20 23:44:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-20 23:44:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-20 23:44:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-20 23:44:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-20 23:44:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-20 23:44:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-20 23:44:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-20 23:44:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-20 23:44:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:44:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-20 23:44:26,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-20 23:44:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-20 23:44:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-20 23:44:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-20 23:44:26,541 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-20 23:44:26,541 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-20 23:44:26,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-20 23:44:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-20 23:44:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-20 23:44:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-20 23:44:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-20 23:44:26,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-20 23:44:26,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-20 23:44:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-20 23:44:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-20 23:44:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-20 23:44:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-20 23:44:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-20 23:44:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-20 23:44:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-20 23:44:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-20 23:44:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-20 23:44:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-20 23:44:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-20 23:44:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-20 23:44:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-20 23:44:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-20 23:44:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-20 23:44:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-20 23:44:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-20 23:44:26,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-20 23:44:26,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:44:26,547 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-20 23:44:26,547 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-20 23:44:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-20 23:44:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-20 23:44:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-20 23:44:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-20 23:44:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-20 23:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-20 23:44:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:44:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:44:26,902 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:44:26,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:44:27,848 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:44:28,463 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:44:28,463 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:44:28,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:28 BoogieIcfgContainer [2021-11-20 23:44:28,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:44:28,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:44:28,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:44:28,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:44:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:44:25" (1/3) ... [2021-11-20 23:44:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255375e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:28, skipping insertion in model container [2021-11-20 23:44:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:26" (2/3) ... [2021-11-20 23:44:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255375e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:28, skipping insertion in model container [2021-11-20 23:44:28,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:28" (3/3) ... [2021-11-20 23:44:28,477 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-20 23:44:28,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:44:28,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:44:28,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:44:28,584 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 [2021-11-20 23:44:28,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:44:28,632 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) [2021-11-20 23:44:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-20 23:44:28,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:28,659 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] [2021-11-20 23:44:28,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 773592641, now seen corresponding path program 1 times [2021-11-20 23:44:28,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:28,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575388840] [2021-11-20 23:44:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:28,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:44:29,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575388840] [2021-11-20 23:44:29,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575388840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:29,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:29,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:44:29,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746819360] [2021-11-20 23:44:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:29,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:44:29,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:44:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:44:29,155 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) [2021-11-20 23:44:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:29,439 INFO L93 Difference]: Finished difference Result 732 states and 1002 transitions. [2021-11-20 23:44:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:44:29,441 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 [2021-11-20 23:44:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:29,457 INFO L225 Difference]: With dead ends: 732 [2021-11-20 23:44:29,457 INFO L226 Difference]: Without dead ends: 377 [2021-11-20 23:44:29,464 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 [2021-11-20 23:44:29,467 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 [2021-11-20 23:44:29,469 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] [2021-11-20 23:44:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-20 23:44:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-20 23:44:29,572 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) [2021-11-20 23:44:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2021-11-20 23:44:29,584 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2021-11-20 23:44:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:29,585 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2021-11-20 23:44:29,586 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) [2021-11-20 23:44:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2021-11-20 23:44:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:44:29,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:29,596 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] [2021-11-20 23:44:29,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:44:29,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 762710508, now seen corresponding path program 1 times [2021-11-20 23:44:29,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:29,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098847913] [2021-11-20 23:44:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:29,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:44:29,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:29,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098847913] [2021-11-20 23:44:29,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098847913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:29,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:29,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:44:29,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383661893] [2021-11-20 23:44:29,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:29,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:29,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:29,772 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) [2021-11-20 23:44:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:29,987 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2021-11-20 23:44:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:29,987 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 [2021-11-20 23:44:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:29,994 INFO L225 Difference]: With dead ends: 731 [2021-11-20 23:44:29,995 INFO L226 Difference]: Without dead ends: 375 [2021-11-20 23:44:30,001 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 [2021-11-20 23:44:30,002 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 [2021-11-20 23:44:30,003 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] [2021-11-20 23:44:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-20 23:44:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-11-20 23:44:30,040 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) [2021-11-20 23:44:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2021-11-20 23:44:30,045 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2021-11-20 23:44:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:30,047 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2021-11-20 23:44:30,048 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) [2021-11-20 23:44:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2021-11-20 23:44:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 23:44:30,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:30,052 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] [2021-11-20 23:44:30,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:44:30,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 753621541, now seen corresponding path program 1 times [2021-11-20 23:44:30,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:30,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942956909] [2021-11-20 23:44:30,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:30,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:44:30,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:30,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942956909] [2021-11-20 23:44:30,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942956909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:30,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:30,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:44:30,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356168864] [2021-11-20 23:44:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:30,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:30,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:30,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:30,190 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) [2021-11-20 23:44:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:30,322 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2021-11-20 23:44:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:30,323 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 [2021-11-20 23:44:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:30,326 INFO L225 Difference]: With dead ends: 724 [2021-11-20 23:44:30,327 INFO L226 Difference]: Without dead ends: 374 [2021-11-20 23:44:30,328 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 [2021-11-20 23:44:30,329 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 [2021-11-20 23:44:30,330 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] [2021-11-20 23:44:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-20 23:44:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-20 23:44:30,358 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) [2021-11-20 23:44:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2021-11-20 23:44:30,363 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2021-11-20 23:44:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:30,363 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2021-11-20 23:44:30,363 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) [2021-11-20 23:44:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2021-11-20 23:44:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 23:44:30,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:30,377 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] [2021-11-20 23:44:30,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:44:30,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 446507475, now seen corresponding path program 1 times [2021-11-20 23:44:30,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:30,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167341710] [2021-11-20 23:44:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:30,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-20 23:44:30,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167341710] [2021-11-20 23:44:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167341710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:30,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:44:30,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485771787] [2021-11-20 23:44:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:30,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:30,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:30,523 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) [2021-11-20 23:44:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:30,692 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2021-11-20 23:44:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:30,693 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 [2021-11-20 23:44:30,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:30,697 INFO L225 Difference]: With dead ends: 705 [2021-11-20 23:44:30,697 INFO L226 Difference]: Without dead ends: 371 [2021-11-20 23:44:30,699 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 [2021-11-20 23:44:30,708 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 [2021-11-20 23:44:30,710 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] [2021-11-20 23:44:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-20 23:44:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-11-20 23:44:30,743 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) [2021-11-20 23:44:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2021-11-20 23:44:30,746 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2021-11-20 23:44:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:30,747 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2021-11-20 23:44:30,748 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) [2021-11-20 23:44:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2021-11-20 23:44:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 23:44:30,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:30,751 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] [2021-11-20 23:44:30,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:44:30,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1168996932, now seen corresponding path program 1 times [2021-11-20 23:44:30,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:30,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939396514] [2021-11-20 23:44:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:30,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:44:30,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939396514] [2021-11-20 23:44:30,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939396514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:30,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:30,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:44:30,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230045691] [2021-11-20 23:44:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:30,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:30,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:30,861 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) [2021-11-20 23:44:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:30,978 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2021-11-20 23:44:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:30,979 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 [2021-11-20 23:44:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:30,982 INFO L225 Difference]: With dead ends: 587 [2021-11-20 23:44:30,983 INFO L226 Difference]: Without dead ends: 373 [2021-11-20 23:44:30,984 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 [2021-11-20 23:44:30,985 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 [2021-11-20 23:44:30,985 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] [2021-11-20 23:44:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-20 23:44:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-20 23:44:31,006 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) [2021-11-20 23:44:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2021-11-20 23:44:31,009 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2021-11-20 23:44:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:31,010 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2021-11-20 23:44:31,010 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) [2021-11-20 23:44:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2021-11-20 23:44:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-20 23:44:31,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:31,013 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] [2021-11-20 23:44:31,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:44:31,013 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:31,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash 687305607, now seen corresponding path program 1 times [2021-11-20 23:44:31,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085737476] [2021-11-20 23:44:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:31,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:44:31,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:31,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085737476] [2021-11-20 23:44:31,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085737476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:31,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:31,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:44:31,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948031255] [2021-11-20 23:44:31,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:31,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:31,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:44:31,089 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) [2021-11-20 23:44:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:31,239 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2021-11-20 23:44:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:31,239 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 [2021-11-20 23:44:31,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:31,243 INFO L225 Difference]: With dead ends: 746 [2021-11-20 23:44:31,243 INFO L226 Difference]: Without dead ends: 440 [2021-11-20 23:44:31,245 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 [2021-11-20 23:44:31,246 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 [2021-11-20 23:44:31,246 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] [2021-11-20 23:44:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-20 23:44:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2021-11-20 23:44:31,275 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) [2021-11-20 23:44:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2021-11-20 23:44:31,279 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2021-11-20 23:44:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:31,280 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2021-11-20 23:44:31,280 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) [2021-11-20 23:44:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2021-11-20 23:44:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-20 23:44:31,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:31,283 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] [2021-11-20 23:44:31,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:44:31,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1363662011, now seen corresponding path program 1 times [2021-11-20 23:44:31,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:31,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716647909] [2021-11-20 23:44:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:31,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:44:31,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:31,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716647909] [2021-11-20 23:44:31,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716647909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:44:31,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594771950] [2021-11-20 23:44:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:31,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:31,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:31,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d597cee-561a-4033-afa0-41df73755bf2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:44:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:31,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:44:31,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:44:32,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-20 23:44:32,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594771950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:32,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001042100] [2021-11-20 23:44:32,530 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-20 23:44:32,531 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:44:32,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:44:32,541 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:44:32,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:53:28,295 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2021-11-20 23:53:55,867 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2021-11-20 23:54:25,021 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 372 for LOIs [2021-11-20 23:55:17,462 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2021-11-20 23:55:23,538 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 510 for LOIs [2021-11-20 23:55:50,758 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 455 for LOIs [2021-11-20 23:55:59,094 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 336 for LOIs [2021-11-20 23:56:02,579 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2021-11-20 23:56:08,125 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 369 for LOIs [2021-11-20 23:56:19,609 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 360 for LOIs