./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product34.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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/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 39fe77adb61a1e466f06fcf9920e7f42d562f22740249d3a797ea504e0f3c31a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:26:19,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:26:19,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:26:19,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:26:19,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:26:19,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:26:19,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:26:19,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:26:19,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:26:19,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:26:19,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:26:19,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:26:19,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:26:19,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:26:19,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:26:19,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:26:19,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:26:19,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:26:19,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:26:19,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:26:19,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:26:19,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:26:19,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:26:19,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:26:19,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:26:19,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:26:19,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:26:19,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:26:19,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:26:19,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:26:19,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:26:19,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:26:19,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:26:19,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:26:19,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:26:19,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:26:19,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:26:19,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:26:19,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:26:19,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:26:19,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:26:19,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:26:19,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:26:19,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:26:19,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:26:19,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:26:19,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:26:19,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:26:19,562 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:26:19,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:26:19,562 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:26:19,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:26:19,563 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:26:19,563 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:26:19,563 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:26:19,563 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:26:19,563 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:26:19,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:26:19,564 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:26:19,564 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:26:19,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:26:19,565 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:26:19,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:26:19,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:26:19,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:26:19,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:26:19,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:26:19,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:26:19,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:26:19,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:26:19,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:26:19,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:26:19,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:26:19,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:26:19,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:19,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:26:19,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:26:19,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:26:19,568 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:26:19,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:26:19,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:26:19,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:26:19,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:26:19,569 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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39fe77adb61a1e466f06fcf9920e7f42d562f22740249d3a797ea504e0f3c31a [2021-11-23 02:26:19,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:26:19,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:26:19,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:26:19,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:26:19,943 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:26:19,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2021-11-23 02:26:20,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/data/1745761de/7b47b27554bb41f4a562a4c16ecb664a/FLAG7d768db38 [2021-11-23 02:26:20,649 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:26:20,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2021-11-23 02:26:20,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/data/1745761de/7b47b27554bb41f4a562a4c16ecb664a/FLAG7d768db38 [2021-11-23 02:26:20,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/data/1745761de/7b47b27554bb41f4a562a4c16ecb664a [2021-11-23 02:26:20,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:26:20,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:26:20,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:20,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:26:20,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:26:20,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4502c849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:20, skipping insertion in model container [2021-11-23 02:26:20,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:26:20,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:26:21,694 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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c[51595,51608] [2021-11-23 02:26:21,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:21,776 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:26:21,841 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_0f6d4d18-a922-4ad5-b43e-1030b13098ab/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c[51595,51608] [2021-11-23 02:26:21,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:21,913 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:26:21,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21 WrapperNode [2021-11-23 02:26:21,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:21,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:21,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:26:21,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:26:21,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,070 INFO L137 Inliner]: procedures = 134, calls = 238, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1088 [2021-11-23 02:26:22,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:22,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:26:22,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:26:22,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:26:22,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:26:22,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:26:22,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:26:22,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:26:22,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:22,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:22,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:22,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:26:22,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:26:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:26:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:26:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:26:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:26:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:26:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:26:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:26:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:26:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:26:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:26:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:26:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:26:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:26:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:26:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:26:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:26:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:26:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:26:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:26:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:26:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:26:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:26:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:26:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:26:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:26:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:26:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:26:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:26:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:26:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:26:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:26:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:26:22,315 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:26:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:26:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:26:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:26:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:26:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:26:22,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:26:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:26:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:26:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:26:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 02:26:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 02:26:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2021-11-23 02:26:22,318 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2021-11-23 02:26:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:26:22,319 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:26:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:26:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:26:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:26:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:26:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:26:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:26:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:26:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:26:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:26:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:26:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:26:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:26:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:26:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:26:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:26:22,638 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:26:22,641 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:26:23,760 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:26:24,380 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:26:24,381 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:26:24,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:24 BoogieIcfgContainer [2021-11-23 02:26:24,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:26:24,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:26:24,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:26:24,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:26:24,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:20" (1/3) ... [2021-11-23 02:26:24,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162693a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:24, skipping insertion in model container [2021-11-23 02:26:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (2/3) ... [2021-11-23 02:26:24,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162693a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:24, skipping insertion in model container [2021-11-23 02:26:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:24" (3/3) ... [2021-11-23 02:26:24,402 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2021-11-23 02:26:24,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:26:24,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:26:24,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:26:24,487 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 02:26:24,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:26:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 133 states have (on average 1.2857142857142858) internal successors, (171), 138 states have internal predecessors, (171), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 02:26:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 02:26:24,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:24,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:24,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:24,566 INFO L85 PathProgramCache]: Analyzing trace with hash -361348639, now seen corresponding path program 1 times [2021-11-23 02:26:24,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:24,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841054784] [2021-11-23 02:26:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:24,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:25,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:25,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841054784] [2021-11-23 02:26:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841054784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:25,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:25,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:26:25,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484504439] [2021-11-23 02:26:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:25,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:26:25,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:26:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:26:25,056 INFO L87 Difference]: Start difference. First operand has 237 states, 133 states have (on average 1.2857142857142858) internal successors, (171), 138 states have internal predecessors, (171), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:26:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:25,308 INFO L93 Difference]: Finished difference Result 382 states and 505 transitions. [2021-11-23 02:26:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:26:25,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 99 [2021-11-23 02:26:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:25,329 INFO L225 Difference]: With dead ends: 382 [2021-11-23 02:26:25,330 INFO L226 Difference]: Without dead ends: 234 [2021-11-23 02:26:25,340 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 02:26:25,345 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:25,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-23 02:26:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-23 02:26:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 135 states have internal predecessors, (165), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 02:26:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 310 transitions. [2021-11-23 02:26:25,450 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 310 transitions. Word has length 99 [2021-11-23 02:26:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:25,452 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 310 transitions. [2021-11-23 02:26:25,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:26:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 310 transitions. [2021-11-23 02:26:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 02:26:25,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:25,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:25,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:26:25,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1999790941, now seen corresponding path program 1 times [2021-11-23 02:26:25,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:25,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158841495] [2021-11-23 02:26:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:25,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:26:25,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158841495] [2021-11-23 02:26:25,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158841495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:25,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:25,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:25,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653872865] [2021-11-23 02:26:25,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:25,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:25,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:25,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:25,680 INFO L87 Difference]: Start difference. First operand 234 states and 310 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:26:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:25,844 INFO L93 Difference]: Finished difference Result 378 states and 490 transitions. [2021-11-23 02:26:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 111 [2021-11-23 02:26:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:25,853 INFO L225 Difference]: With dead ends: 378 [2021-11-23 02:26:25,853 INFO L226 Difference]: Without dead ends: 236 [2021-11-23 02:26:25,858 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 02:26:25,860 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:25,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-23 02:26:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-11-23 02:26:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 133 states have (on average 1.255639097744361) internal successors, (167), 137 states have internal predecessors, (167), 73 states have call successors, (73), 29 states have call predecessors, (73), 29 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 02:26:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 312 transitions. [2021-11-23 02:26:25,903 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 312 transitions. Word has length 111 [2021-11-23 02:26:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:25,906 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 312 transitions. [2021-11-23 02:26:25,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:26:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 312 transitions. [2021-11-23 02:26:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 02:26:25,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:25,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:25,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:26:25,915 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1841764790, now seen corresponding path program 1 times [2021-11-23 02:26:25,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:25,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561442569] [2021-11-23 02:26:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:25,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:26,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:26,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561442569] [2021-11-23 02:26:26,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561442569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:26,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:26,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:26:26,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15321678] [2021-11-23 02:26:26,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:26,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:26:26,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:26:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:26:26,113 INFO L87 Difference]: Start difference. First operand 236 states and 312 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:26:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:26,284 INFO L93 Difference]: Finished difference Result 507 states and 691 transitions. [2021-11-23 02:26:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:26:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2021-11-23 02:26:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:26,289 INFO L225 Difference]: With dead ends: 507 [2021-11-23 02:26:26,290 INFO L226 Difference]: Without dead ends: 289 [2021-11-23 02:26:26,291 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 02:26:26,299 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 59 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:26,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 545 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:26:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-23 02:26:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 284. [2021-11-23 02:26:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 167 states have (on average 1.3293413173652695) internal successors, (222), 171 states have internal predecessors, (222), 87 states have call successors, (87), 29 states have call predecessors, (87), 29 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 02:26:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 395 transitions. [2021-11-23 02:26:26,339 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 395 transitions. Word has length 105 [2021-11-23 02:26:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:26,340 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 395 transitions. [2021-11-23 02:26:26,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:26:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 395 transitions. [2021-11-23 02:26:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 02:26:26,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:26,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:26,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:26:26,349 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1548770012, now seen corresponding path program 1 times [2021-11-23 02:26:26,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:26,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267368525] [2021-11-23 02:26:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:26,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:26,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:26,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267368525] [2021-11-23 02:26:26,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267368525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:26:26,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617149987] [2021-11-23 02:26:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:26,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:26,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:26,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:26:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:26:26,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:27,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:26:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:26:27,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617149987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:26:27,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506660976] [2021-11-23 02:26:27,493 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2021-11-23 02:26:27,493 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:26:27,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:26:27,503 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:26:27,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:26:51,581 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:26:51,937 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:26:52,207 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:27:38,933 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 508 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:54,133 WARN L227 SmtUtils]: Spent 14.96s on a formula simplification. DAG size of input: 573 DAG size of output: 418 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:04,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [506660976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:04,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:28:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:28:04,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120322726] [2021-11-23 02:28:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:28:04,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:28:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:28:04,965 INFO L87 Difference]: Start difference. First operand 284 states and 395 transitions. Second operand has 21 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-23 02:28:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:11,343 INFO L93 Difference]: Finished difference Result 615 states and 890 transitions. [2021-11-23 02:28:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:28:11,344 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 106 [2021-11-23 02:28:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:11,348 INFO L225 Difference]: With dead ends: 615 [2021-11-23 02:28:11,348 INFO L226 Difference]: Without dead ends: 349 [2021-11-23 02:28:11,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:28:11,351 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 92 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:11,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3890 Invalid, 1956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:28:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-23 02:28:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 307. [2021-11-23 02:28:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 193 states have internal predecessors, (255), 87 states have call successors, (87), 30 states have call predecessors, (87), 30 states have return successors, (86), 85 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-23 02:28:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 428 transitions. [2021-11-23 02:28:11,417 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 428 transitions. Word has length 106 [2021-11-23 02:28:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:11,418 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 428 transitions. [2021-11-23 02:28:11,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.375) internal successors, (54), 15 states have internal predecessors, (54), 7 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-23 02:28:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 428 transitions. [2021-11-23 02:28:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 02:28:11,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:11,422 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:11,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:28:11,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:11,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1362641946, now seen corresponding path program 1 times [2021-11-23 02:28:11,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:11,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412912580] [2021-11-23 02:28:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:11,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-23 02:28:11,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:11,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412912580] [2021-11-23 02:28:11,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412912580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:11,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:11,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:11,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965049704] [2021-11-23 02:28:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:11,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:11,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:11,711 INFO L87 Difference]: Start difference. First operand 307 states and 428 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:28:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:11,897 INFO L93 Difference]: Finished difference Result 717 states and 1036 transitions. [2021-11-23 02:28:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2021-11-23 02:28:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:11,902 INFO L225 Difference]: With dead ends: 717 [2021-11-23 02:28:11,903 INFO L226 Difference]: Without dead ends: 434 [2021-11-23 02:28:11,904 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 02:28:11,907 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 57 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:11,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 558 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-23 02:28:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 429. [2021-11-23 02:28:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 280 states have (on average 1.4107142857142858) internal successors, (395), 284 states have internal predecessors, (395), 118 states have call successors, (118), 30 states have call predecessors, (118), 30 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2021-11-23 02:28:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 630 transitions. [2021-11-23 02:28:12,021 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 630 transitions. Word has length 122 [2021-11-23 02:28:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:12,022 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 630 transitions. [2021-11-23 02:28:12,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:28:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 630 transitions. [2021-11-23 02:28:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 02:28:12,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:12,027 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:12,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:28:12,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash 410646492, now seen corresponding path program 1 times [2021-11-23 02:28:12,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:12,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880303063] [2021-11-23 02:28:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:28:12,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880303063] [2021-11-23 02:28:12,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880303063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:28:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970283698] [2021-11-23 02:28:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:12,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:12,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:28:12,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:28:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:12,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:28:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:28:12,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:28:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:28:12,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970283698] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:28:12,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395316639] [2021-11-23 02:28:12,988 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2021-11-23 02:28:12,988 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:28:12,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:28:12,990 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:28:12,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:28:45,501 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:28:45,763 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 263 for LOIs [2021-11-23 02:28:47,558 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2021-11-23 02:28:47,599 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:28:47,888 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 265 for LOIs [2021-11-23 02:28:51,172 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 273 for LOIs [2021-11-23 02:29:05,394 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2021-11-23 02:29:06,017 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2021-11-23 02:29:06,062 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 454 for LOIs [2021-11-23 02:29:06,531 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2021-11-23 02:29:06,608 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 433 for LOIs [2021-11-23 02:29:07,085 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 475 for LOIs [2021-11-23 02:29:08,688 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 247 for LOIs [2021-11-23 02:29:08,732 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2021-11-23 02:29:08,784 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:29:56,658 WARN L227 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 508 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:06,822 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:17,767 WARN L227 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 586 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:37,613 WARN L227 SmtUtils]: Spent 18.47s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:57,509 WARN L227 SmtUtils]: Spent 18.52s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:09,037 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 568 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:18,635 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 475 DAG size of output: 275 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:45,518 WARN L227 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 454 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:57,889 WARN L227 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 480 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:22,354 WARN L227 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 433 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:36,614 WARN L227 SmtUtils]: Spent 11.02s on a formula simplification. DAG size of input: 452 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:02,638 WARN L227 SmtUtils]: Spent 16.89s on a formula simplification. DAG size of input: 585 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:11,105 WARN L227 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 585 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:19,509 WARN L227 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 579 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:37,083 WARN L227 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 633 DAG size of output: 469 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:43,981 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 633 DAG size of output: 447 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:43,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1395316639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:43,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:34:43,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [4, 4, 4] total 82 [2021-11-23 02:34:43,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417709900] [2021-11-23 02:34:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:43,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-23 02:34:43,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-23 02:34:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=6378, Unknown=0, NotChecked=0, Total=6642 [2021-11-23 02:34:43,989 INFO L87 Difference]: Start difference. First operand 429 states and 630 transitions. Second operand has 77 states, 49 states have (on average 1.163265306122449) internal successors, (57), 46 states have internal predecessors, (57), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:34:57,519 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 542 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:11,771 WARN L227 SmtUtils]: Spent 13.66s on a formula simplification. DAG size of input: 464 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:25,887 WARN L227 SmtUtils]: Spent 13.62s on a formula simplification. DAG size of input: 462 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:57,915 WARN L227 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 585 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:40,225 INFO L93 Difference]: Finished difference Result 1002 states and 1503 transitions. [2021-11-23 02:36:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-23 02:36:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 49 states have (on average 1.163265306122449) internal successors, (57), 46 states have internal predecessors, (57), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 112 [2021-11-23 02:36:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:40,232 INFO L225 Difference]: With dead ends: 1002 [2021-11-23 02:36:40,232 INFO L226 Difference]: Without dead ends: 636 [2021-11-23 02:36:40,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 254 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 420.0s TimeCoverageRelationStatistics Valid=369, Invalid=9333, Unknown=0, NotChecked=0, Total=9702 [2021-11-23 02:36:40,237 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 274 mSDsluCounter, 8483 mSDsCounter, 0 mSdLazyCounter, 11240 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 11310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 11240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:40,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 8411 Invalid, 11310 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [70 Valid, 11240 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2021-11-23 02:36:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-23 02:36:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 522. [2021-11-23 02:36:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 338 states have (on average 1.3757396449704142) internal successors, (465), 345 states have internal predecessors, (465), 142 states have call successors, (142), 43 states have call predecessors, (142), 41 states have return successors, (142), 135 states have call predecessors, (142), 141 states have call successors, (142) [2021-11-23 02:36:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 749 transitions. [2021-11-23 02:36:40,393 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 749 transitions. Word has length 112 [2021-11-23 02:36:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:40,394 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 749 transitions. [2021-11-23 02:36:40,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 49 states have (on average 1.163265306122449) internal successors, (57), 46 states have internal predecessors, (57), 23 states have call successors, (24), 15 states have call predecessors, (24), 12 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:36:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 749 transitions. [2021-11-23 02:36:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 02:36:40,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:40,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:40,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:40,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:36:40,625 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash -537705352, now seen corresponding path program 1 times [2021-11-23 02:36:40,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:40,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513077504] [2021-11-23 02:36:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:40,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:36:40,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:40,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513077504] [2021-11-23 02:36:40,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513077504] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:40,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794882620] [2021-11-23 02:36:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:40,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:40,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:40,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6d4d18-a922-4ad5-b43e-1030b13098ab/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:36:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:41,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:36:41,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:36:41,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:36:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:36:41,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794882620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:36:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251033493] [2021-11-23 02:36:41,428 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2021-11-23 02:36:41,429 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:36:41,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:36:41,431 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:36:41,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs