./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:14:50,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:14:51,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:14:51,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:14:51,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:14:51,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:14:51,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:14:51,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:14:51,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:14:51,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:14:51,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:14:51,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:14:51,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:14:51,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:14:51,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:14:51,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:14:51,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:14:51,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:14:51,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:14:51,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:14:51,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:14:51,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:14:51,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:14:51,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:14:51,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:14:51,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:14:51,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:14:51,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:14:51,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:14:51,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:14:51,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:14:51,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:14:51,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:14:51,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:14:51,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:14:51,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:14:51,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:14:51,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:14:51,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:14:51,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:14:51,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:14:51,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:14:51,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:14:51,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:14:51,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:14:51,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:14:51,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:14:51,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:14:51,247 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:14:51,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:14:51,247 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:14:51,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:14:51,248 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:14:51,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:14:51,248 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:14:51,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:14:51,249 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:14:51,249 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:14:51,249 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:14:51,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:14:51,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:14:51,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:14:51,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:14:51,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:14:51,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:14:51,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:14:51,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:14:51,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:14:51,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:14:51,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:14:51,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:14:51,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:14:51,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:14:51,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:14:51,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:51,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:14:51,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:14:51,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:14:51,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:14:51,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:14:51,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:14:51,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:14:51,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:14:51,257 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_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 [2021-11-23 02:14:51,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:14:51,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:14:51,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:14:51,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:14:51,701 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:14:51,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2021-11-23 02:14:51,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/data/8114bf3cc/ae68ef93c5c9402ba122eb5b0c26430c/FLAGa2938ca16 [2021-11-23 02:14:52,544 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:14:52,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2021-11-23 02:14:52,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/data/8114bf3cc/ae68ef93c5c9402ba122eb5b0c26430c/FLAGa2938ca16 [2021-11-23 02:14:52,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/data/8114bf3cc/ae68ef93c5c9402ba122eb5b0c26430c [2021-11-23 02:14:52,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:14:52,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:14:52,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:52,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:14:52,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:14:52,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:52" (1/1) ... [2021-11-23 02:14:52,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26099d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:52, skipping insertion in model container [2021-11-23 02:14:52,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:52" (1/1) ... [2021-11-23 02:14:52,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:14:52,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:14:53,589 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_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2021-11-23 02:14:53,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:53,716 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:14:53,820 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_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2021-11-23 02:14:53,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:53,981 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:14:53,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53 WrapperNode [2021-11-23 02:14:53,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:53,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:53,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:14:53,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:14:53,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,120 INFO L137 Inliner]: procedures = 130, calls = 217, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1072 [2021-11-23 02:14:54,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:54,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:14:54,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:14:54,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:14:54,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:14:54,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:14:54,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:14:54,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:14:54,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (1/1) ... [2021-11-23 02:14:54,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:54,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:54,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:14:54,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:14:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:14:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:14:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:14:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:14:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2021-11-23 02:14:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2021-11-23 02:14:54,409 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:14:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:14:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:14:54,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:14:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:14:54,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:14:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:14:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:14:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:14:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:14:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:14:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:14:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:14:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:14:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:14:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:14:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:14:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:14:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:14:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:14:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:14:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:14:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:14:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:14:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:14:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:14:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:14:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:14:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:14:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:14:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:14:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:14:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:14:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:14:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:14:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:14:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:14:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:14:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:14:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:14:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:14:54,742 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:14:54,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:14:55,993 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:14:56,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:14:56,579 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:14:56,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:56 BoogieIcfgContainer [2021-11-23 02:14:56,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:14:56,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:14:56,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:14:56,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:14:56,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:52" (1/3) ... [2021-11-23 02:14:56,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df6fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:56, skipping insertion in model container [2021-11-23 02:14:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:53" (2/3) ... [2021-11-23 02:14:56,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df6fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:56, skipping insertion in model container [2021-11-23 02:14:56,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:56" (3/3) ... [2021-11-23 02:14:56,597 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product25.cil.c [2021-11-23 02:14:56,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:14:56,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:14:56,683 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:14:56,697 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:14:56,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:14:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-23 02:14:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:14:56,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:56,769 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:14:56,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1667383075, now seen corresponding path program 1 times [2021-11-23 02:14:56,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:56,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506721950] [2021-11-23 02:14:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:56,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:57,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:57,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506721950] [2021-11-23 02:14:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506721950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:57,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:57,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:14:57,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246876223] [2021-11-23 02:14:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:57,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:14:57,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:14:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:57,364 INFO L87 Difference]: Start difference. First operand has 180 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 106 states have internal predecessors, (136), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:57,596 INFO L93 Difference]: Finished difference Result 268 states and 359 transitions. [2021-11-23 02:14:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:14:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2021-11-23 02:14:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:57,628 INFO L225 Difference]: With dead ends: 268 [2021-11-23 02:14:57,628 INFO L226 Difference]: Without dead ends: 177 [2021-11-23 02:14:57,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:57,645 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:57,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-23 02:14:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-23 02:14:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 103 states have internal predecessors, (130), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 02:14:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2021-11-23 02:14:57,739 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 71 [2021-11-23 02:14:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:57,741 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2021-11-23 02:14:57,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2021-11-23 02:14:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:14:57,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:57,781 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:14:57,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:14:57,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:57,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -379101384, now seen corresponding path program 1 times [2021-11-23 02:14:57,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:57,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239440129] [2021-11-23 02:14:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:58,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:58,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239440129] [2021-11-23 02:14:58,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239440129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:58,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:58,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:58,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045394328] [2021-11-23 02:14:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:58,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:58,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:58,038 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:58,264 INFO L93 Difference]: Finished difference Result 264 states and 344 transitions. [2021-11-23 02:14:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:58,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2021-11-23 02:14:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:58,274 INFO L225 Difference]: With dead ends: 264 [2021-11-23 02:14:58,274 INFO L226 Difference]: Without dead ends: 179 [2021-11-23 02:14:58,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:58,278 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:58,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 401 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-23 02:14:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-23 02:14:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 105 states have internal predecessors, (132), 54 states have call successors, (54), 21 states have call predecessors, (54), 21 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 02:14:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2021-11-23 02:14:58,327 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 72 [2021-11-23 02:14:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:58,328 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2021-11-23 02:14:58,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2021-11-23 02:14:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:14:58,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:58,340 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:58,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:14:58,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:58,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1473074810, now seen corresponding path program 1 times [2021-11-23 02:14:58,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:58,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170569753] [2021-11-23 02:14:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:58,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:58,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170569753] [2021-11-23 02:14:58,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170569753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:58,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:58,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:58,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561540389] [2021-11-23 02:14:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:58,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:58,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:58,532 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:58,717 INFO L93 Difference]: Finished difference Result 393 states and 545 transitions. [2021-11-23 02:14:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2021-11-23 02:14:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:58,727 INFO L225 Difference]: With dead ends: 393 [2021-11-23 02:14:58,727 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 02:14:58,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:58,738 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 59 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:58,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 412 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 02:14:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2021-11-23 02:14:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 137 states have (on average 1.364963503649635) internal successors, (187), 139 states have internal predecessors, (187), 68 states have call successors, (68), 21 states have call predecessors, (68), 21 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-23 02:14:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 322 transitions. [2021-11-23 02:14:58,772 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 322 transitions. Word has length 77 [2021-11-23 02:14:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:58,773 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 322 transitions. [2021-11-23 02:14:58,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:14:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 322 transitions. [2021-11-23 02:14:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:14:58,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:58,779 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:58,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:14:58,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 769229580, now seen corresponding path program 1 times [2021-11-23 02:14:58,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:58,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536425815] [2021-11-23 02:14:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:58,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:58,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:58,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536425815] [2021-11-23 02:14:58,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536425815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:58,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098970109] [2021-11-23 02:14:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:58,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:58,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:58,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:14:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:59,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:14:59,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:59,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:14:59,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098970109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:14:59,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [448996667] [2021-11-23 02:14:59,870 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 02:14:59,871 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:59,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:59,885 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:59,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:15:33,367 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:15:33,711 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:15:34,033 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2021-11-23 02:15:36,366 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2021-11-23 02:15:40,615 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2021-11-23 02:15:40,676 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2021-11-23 02:15:46,446 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2021-11-23 02:15:46,706 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 02:15:46,768 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:15:48,887 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:15:48,971 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:16:27,463 WARN L227 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:39,344 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:46,921 WARN L227 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 570 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:16:54,933 WARN L227 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:00,426 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 567 DAG size of output: 328 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:05,937 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 565 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:11,518 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 569 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:18,598 WARN L227 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 563 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:17:36,444 WARN L227 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:24,183 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 438 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:29,948 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 444 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:38,403 WARN L227 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 537 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:45,102 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 537 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:45,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [448996667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:18:45,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:18:45,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2021-11-23 02:18:45,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018762592] [2021-11-23 02:18:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:18:45,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 02:18:45,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:18:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 02:18:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:18:45,112 INFO L87 Difference]: Start difference. First operand 227 states and 322 transitions. Second operand has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-23 02:19:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:22,266 INFO L93 Difference]: Finished difference Result 545 states and 806 transitions. [2021-11-23 02:19:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-23 02:19:22,268 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 78 [2021-11-23 02:19:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:22,277 INFO L225 Difference]: With dead ends: 545 [2021-11-23 02:19:22,277 INFO L226 Difference]: Without dead ends: 336 [2021-11-23 02:19:22,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 182 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 190.3s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:19:22,284 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 156 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 6775 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 5872 SdHoareTripleChecker+Invalid, 6802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:22,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 5872 Invalid, 6802 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27 Valid, 6775 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time] [2021-11-23 02:19:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-23 02:19:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 293. [2021-11-23 02:19:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 188 states have internal predecessors, (251), 79 states have call successors, (79), 30 states have call predecessors, (79), 28 states have return successors, (79), 74 states have call predecessors, (79), 78 states have call successors, (79) [2021-11-23 02:19:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2021-11-23 02:19:22,428 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 78 [2021-11-23 02:19:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:22,429 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2021-11-23 02:19:22,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.21875) internal successors, (39), 29 states have internal predecessors, (39), 16 states have call successors, (17), 10 states have call predecessors, (17), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-23 02:19:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2021-11-23 02:19:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:19:22,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:22,433 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:22,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:19:22,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:22,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1426991427, now seen corresponding path program 1 times [2021-11-23 02:19:22,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:22,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44719380] [2021-11-23 02:19:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:22,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:19:22,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:19:22,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44719380] [2021-11-23 02:19:22,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44719380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:19:22,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:19:22,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:19:22,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675061595] [2021-11-23 02:19:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:22,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:19:22,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:19:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:19:22,753 INFO L87 Difference]: Start difference. First operand 293 states and 409 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:19:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:23,005 INFO L93 Difference]: Finished difference Result 688 states and 998 transitions. [2021-11-23 02:19:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:19:23,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2021-11-23 02:19:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:23,011 INFO L225 Difference]: With dead ends: 688 [2021-11-23 02:19:23,012 INFO L226 Difference]: Without dead ends: 421 [2021-11-23 02:19:23,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:19:23,014 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 57 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:23,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 432 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:19:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-23 02:19:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 414. [2021-11-23 02:19:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 275 states have (on average 1.4218181818181819) internal successors, (391), 278 states have internal predecessors, (391), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (110), 105 states have call predecessors, (110), 109 states have call successors, (110) [2021-11-23 02:19:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 611 transitions. [2021-11-23 02:19:23,142 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 611 transitions. Word has length 83 [2021-11-23 02:19:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:23,143 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 611 transitions. [2021-11-23 02:19:23,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:19:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 611 transitions. [2021-11-23 02:19:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 02:19:23,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:23,147 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:23,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:19:23,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash -678441256, now seen corresponding path program 1 times [2021-11-23 02:19:23,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:23,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032826786] [2021-11-23 02:19:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:23,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:19:23,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:19:23,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032826786] [2021-11-23 02:19:23,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032826786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:23,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439607615] [2021-11-23 02:19:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:23,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:23,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:23,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:19:23,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:19:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:23,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:19:23,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:19:23,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:19:24,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439607615] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:19:24,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344230729] [2021-11-23 02:19:24,113 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 02:19:24,114 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:19:24,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:19:24,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:19:24,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:20:00,315 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:20:00,644 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:20:00,964 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2021-11-23 02:20:02,907 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2021-11-23 02:20:06,957 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2021-11-23 02:20:07,039 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 262 for LOIs [2021-11-23 02:20:10,617 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 244 for LOIs [2021-11-23 02:20:10,664 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2021-11-23 02:20:10,720 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-23 02:20:12,635 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2021-11-23 02:20:12,684 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:20:25,879 WARN L227 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:31,899 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:56,554 WARN L227 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:07,419 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:18,222 WARN L227 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 588 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:42,385 WARN L227 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:26,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [344230729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:22:26,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:22:26,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2021-11-23 02:22:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194979013] [2021-11-23 02:22:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:22:26,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:22:26,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:22:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:22:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 02:22:26,028 INFO L87 Difference]: Start difference. First operand 414 states and 611 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-11-23 02:23:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:23:17,774 INFO L93 Difference]: Finished difference Result 880 states and 1347 transitions. [2021-11-23 02:23:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-23 02:23:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 84 [2021-11-23 02:23:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:23:17,781 INFO L225 Difference]: With dead ends: 880 [2021-11-23 02:23:17,781 INFO L226 Difference]: Without dead ends: 571 [2021-11-23 02:23:17,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 167.6s TimeCoverageRelationStatistics Valid=273, Invalid=4557, Unknown=0, NotChecked=0, Total=4830 [2021-11-23 02:23:17,785 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 392 mSDsluCounter, 4877 mSDsCounter, 0 mSdLazyCounter, 6533 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 6596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 6533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:23:17,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 4928 Invalid, 6596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 6533 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2021-11-23 02:23:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-23 02:23:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 430. [2021-11-23 02:23:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 287 states have (on average 1.4250871080139373) internal successors, (409), 292 states have internal predecessors, (409), 113 states have call successors, (113), 31 states have call predecessors, (113), 29 states have return successors, (113), 106 states have call predecessors, (113), 112 states have call successors, (113) [2021-11-23 02:23:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 635 transitions. [2021-11-23 02:23:17,933 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 635 transitions. Word has length 84 [2021-11-23 02:23:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:23:17,934 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 635 transitions. [2021-11-23 02:23:17,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 17 states have call successors, (18), 10 states have call predecessors, (18), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2021-11-23 02:23:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 635 transitions. [2021-11-23 02:23:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 02:23:17,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:23:17,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:23:17,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:23:18,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:23:18,154 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__KeysErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:23:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:23:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 517204407, now seen corresponding path program 1 times [2021-11-23 02:23:18,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:23:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959575613] [2021-11-23 02:23:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:18,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:23:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:18,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:23:18,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959575613] [2021-11-23 02:23:18,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959575613] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:23:18,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506277823] [2021-11-23 02:23:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:23:18,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:23:18,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:23:18,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:23:18,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efd1747f-f4f5-4e0a-8aac-0876d65f6b63/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:23:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:23:18,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:23:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:23:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:18,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:23:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:23:18,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506277823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:23:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699525063] [2021-11-23 02:23:18,885 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 02:23:18,885 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:23:18,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:23:18,886 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:23:18,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:23:38,999 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:23:39,256 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:23:39,504 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2021-11-23 02:23:41,088 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 256 for LOIs [2021-11-23 02:23:44,142 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 259 for LOIs [2021-11-23 02:23:44,205 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Keys with input of size 266 for LOIs [2021-11-23 02:23:55,780 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2021-11-23 02:23:55,987 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 02:23:56,031 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 02:23:56,072 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 02:23:57,589 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 438 for LOIs [2021-11-23 02:23:57,814 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:24:32,047 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 492 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:41,665 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 514 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:57,004 WARN L227 SmtUtils]: Spent 13.84s on a formula simplification. DAG size of input: 583 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:03,303 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:11,801 WARN L227 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 568 DAG size of output: 375 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:20,422 WARN L227 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 566 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:26,090 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 565 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:31,710 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 563 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:46,345 WARN L227 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 480 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)