./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.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_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/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_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/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_abcbe30c-85db-44d6-84b8-997daa841121/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 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:29:27,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:29:27,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:29:27,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:29:27,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:29:27,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:29:27,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:29:27,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:29:27,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:29:27,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:29:27,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:29:27,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:29:27,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:29:27,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:29:27,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:29:27,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:29:27,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:29:27,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:29:27,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:29:27,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:29:27,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:29:27,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:29:27,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:29:27,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:29:27,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:29:27,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:29:27,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:29:27,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:29:27,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:29:27,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:29:27,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:29:27,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:29:27,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:29:27,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:29:27,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:29:27,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:29:27,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:29:27,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:29:27,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:29:27,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:29:27,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:29:27,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:29:27,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:29:27,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:29:27,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:29:27,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:29:27,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:29:27,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:29:27,782 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:29:27,783 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:29:27,783 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:29:27,783 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:29:27,784 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:29:27,784 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:29:27,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:29:27,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:29:27,785 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:29:27,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:29:27,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:29:27,786 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:29:27,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:29:27,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:29:27,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:29:27,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:29:27,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:29:27,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:29:27,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:29:27,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:29:27,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:29:27,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:29:27,789 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:29:27,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:29:27,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:29:27,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:29:27,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:27,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:29:27,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:29:27,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:29:27,791 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:29:27,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:29:27,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:29:27,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:29:27,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:29:27,793 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_abcbe30c-85db-44d6-84b8-997daa841121/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2021-11-23 02:29:28,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:29:28,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:29:28,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:29:28,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:29:28,193 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:29:28,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2021-11-23 02:29:28,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/data/b523b13fb/d4e1c2f30640488c9c9dfb327876aa65/FLAG2c0c5927b [2021-11-23 02:29:29,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:29:29,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2021-11-23 02:29:29,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/data/b523b13fb/d4e1c2f30640488c9c9dfb327876aa65/FLAG2c0c5927b [2021-11-23 02:29:29,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/data/b523b13fb/d4e1c2f30640488c9c9dfb327876aa65 [2021-11-23 02:29:29,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:29:29,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:29:29,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:29,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:29:29,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:29:29,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:29" (1/1) ... [2021-11-23 02:29:29,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d01d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:29, skipping insertion in model container [2021-11-23 02:29:29,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:29" (1/1) ... [2021-11-23 02:29:29,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:29:29,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:29:29,588 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_abcbe30c-85db-44d6-84b8-997daa841121/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2021-11-23 02:29:29,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:29,907 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:29:29,953 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_abcbe30c-85db-44d6-84b8-997daa841121/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2021-11-23 02:29:30,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:30,150 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:29:30,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30 WrapperNode [2021-11-23 02:29:30,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:30,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:30,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:29:30,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:29:30,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,266 INFO L137 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 884 [2021-11-23 02:29:30,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:30,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:29:30,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:29:30,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:29:30,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:29:30,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:29:30,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:29:30,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:29:30,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (1/1) ... [2021-11-23 02:29:30,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:30,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:30,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:29:30,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:29:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:29:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:29:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:29:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:29:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:29:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:29:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:29:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:29:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:29:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:29:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:29:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:29:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:29:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:29:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:29:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:29:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:29:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:29:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:29:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:29:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:29:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:29:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:29:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:29:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:29:30,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:29:30,460 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:29:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:29:30,460 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:29:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:29:30,460 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:29:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:29:30,461 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-23 02:29:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-23 02:29:30,461 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:29:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:29:30,461 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:29:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:29:30,462 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:29:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:29:30,462 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:29:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:29:30,462 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:29:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:29:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:29:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:29:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:29:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:29:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:29:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:29:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:29:30,790 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:29:30,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:29:31,628 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:29:32,031 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:29:32,031 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:29:32,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:32 BoogieIcfgContainer [2021-11-23 02:29:32,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:29:32,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:29:32,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:29:32,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:29:32,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:29" (1/3) ... [2021-11-23 02:29:32,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2082fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:32, skipping insertion in model container [2021-11-23 02:29:32,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:30" (2/3) ... [2021-11-23 02:29:32,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2082fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:32, skipping insertion in model container [2021-11-23 02:29:32,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:32" (3/3) ... [2021-11-23 02:29:32,042 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2021-11-23 02:29:32,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:29:32,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:29:32,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:29:32,113 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 02:29:32,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:29:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-23 02:29:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:29:32,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:32,150 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] [2021-11-23 02:29:32,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 432371370, now seen corresponding path program 1 times [2021-11-23 02:29:32,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:32,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894515090] [2021-11-23 02:29:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:32,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:32,593 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 02:29:32,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:32,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894515090] [2021-11-23 02:29:32,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894515090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:32,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:32,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:29:32,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116757646] [2021-11-23 02:29:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:32,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:29:32,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:29:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:29:32,649 INFO L87 Difference]: Start difference. First operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:32,834 INFO L93 Difference]: Finished difference Result 296 states and 392 transitions. [2021-11-23 02:29:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:29:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2021-11-23 02:29:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:32,854 INFO L225 Difference]: With dead ends: 296 [2021-11-23 02:29:32,855 INFO L226 Difference]: Without dead ends: 186 [2021-11-23 02:29:32,865 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 02:29:32,871 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:32,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-23 02:29:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-23 02:29:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 112 states have internal predecessors, (141), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 02:29:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2021-11-23 02:29:32,939 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 80 [2021-11-23 02:29:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:32,940 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2021-11-23 02:29:32,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2021-11-23 02:29:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:29:32,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:32,948 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] [2021-11-23 02:29:32,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:29:32,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1324908150, now seen corresponding path program 1 times [2021-11-23 02:29:32,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:32,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529522457] [2021-11-23 02:29:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:32,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:33,202 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 02:29:33,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:33,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529522457] [2021-11-23 02:29:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529522457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:33,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:33,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652351856] [2021-11-23 02:29:33,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:33,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:33,207 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:33,357 INFO L93 Difference]: Finished difference Result 291 states and 376 transitions. [2021-11-23 02:29:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 81 [2021-11-23 02:29:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:33,366 INFO L225 Difference]: With dead ends: 291 [2021-11-23 02:29:33,366 INFO L226 Difference]: Without dead ends: 188 [2021-11-23 02:29:33,373 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 02:29:33,376 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:33,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 435 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-23 02:29:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-23 02:29:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 110 states have (on average 1.3) internal successors, (143), 114 states have internal predecessors, (143), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 02:29:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2021-11-23 02:29:33,432 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 81 [2021-11-23 02:29:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2021-11-23 02:29:33,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2021-11-23 02:29:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 02:29:33,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:33,444 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] [2021-11-23 02:29:33,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:29:33,444 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1800007245, now seen corresponding path program 1 times [2021-11-23 02:29:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706795876] [2021-11-23 02:29:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:33,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:33,589 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 02:29:33,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:33,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706795876] [2021-11-23 02:29:33,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706795876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:33,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:33,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:29:33,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754364261] [2021-11-23 02:29:33,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:33,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:29:33,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:29:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:29:33,596 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:33,716 INFO L93 Difference]: Finished difference Result 406 states and 559 transitions. [2021-11-23 02:29:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:29:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2021-11-23 02:29:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:33,728 INFO L225 Difference]: With dead ends: 406 [2021-11-23 02:29:33,728 INFO L226 Difference]: Without dead ends: 236 [2021-11-23 02:29:33,729 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 02:29:33,737 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 57 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:33,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 450 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:29:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-23 02:29:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2021-11-23 02:29:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 142 states have (on average 1.380281690140845) internal successors, (196), 146 states have internal predecessors, (196), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 02:29:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 325 transitions. [2021-11-23 02:29:33,774 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 325 transitions. Word has length 86 [2021-11-23 02:29:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:33,776 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 325 transitions. [2021-11-23 02:29:33,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:29:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 325 transitions. [2021-11-23 02:29:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:29:33,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:33,782 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] [2021-11-23 02:29:33,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:29:33,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1691435266, now seen corresponding path program 1 times [2021-11-23 02:29:33,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:33,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673572284] [2021-11-23 02:29:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:33,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:33,953 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 02:29:33,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673572284] [2021-11-23 02:29:33,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673572284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:29:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124315591] [2021-11-23 02:29:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:33,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:29:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:33,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:29:33,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:29:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:34,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:29:34,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:34,561 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 02:29:34,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:34,774 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 02:29:34,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124315591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:29:34,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1839620338] [2021-11-23 02:29:34,806 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-23 02:29:34,806 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:29:34,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:29:34,821 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:29:34,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:30:07,494 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2021-11-23 02:30:07,840 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2021-11-23 02:30:08,168 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:30:31,381 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:37,416 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 478 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:46,605 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 480 DAG size of output: 305 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:02,928 WARN L227 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:26,902 WARN L227 SmtUtils]: Spent 17.28s on a formula simplification. DAG size of input: 585 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:34,351 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 568 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:43,461 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 570 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:51,404 WARN L227 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 572 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:59,440 WARN L227 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:06,804 WARN L227 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 568 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:06,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1839620338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:06,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:32:06,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2021-11-23 02:32:06,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525860638] [2021-11-23 02:32:06,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:06,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 02:32:06,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 02:32:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:32:06,831 INFO L87 Difference]: Start difference. First operand 231 states and 325 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:32:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:16,455 INFO L93 Difference]: Finished difference Result 541 states and 811 transitions. [2021-11-23 02:32:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 02:32:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2021-11-23 02:32:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:16,461 INFO L225 Difference]: With dead ends: 541 [2021-11-23 02:32:16,461 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 02:32:16,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 118.7s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-11-23 02:32:16,464 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 141 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:16,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 3026 Invalid, 1953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 02:32:16,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 02:32:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 254. [2021-11-23 02:32:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 164 states have (on average 1.396341463414634) internal successors, (229), 168 states have internal predecessors, (229), 66 states have call successors, (66), 24 states have call predecessors, (66), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 02:32:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 358 transitions. [2021-11-23 02:32:16,559 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 358 transitions. Word has length 87 [2021-11-23 02:32:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 358 transitions. [2021-11-23 02:32:16,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-23 02:32:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 358 transitions. [2021-11-23 02:32:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 02:32:16,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:16,563 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] [2021-11-23 02:32:16,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:16,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:16,776 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash -551190023, now seen corresponding path program 1 times [2021-11-23 02:32:16,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:16,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277104633] [2021-11-23 02:32:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:16,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 02:32:16,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277104633] [2021-11-23 02:32:16,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277104633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:16,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:16,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:16,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181257648] [2021-11-23 02:32:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:16,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:16,908 INFO L87 Difference]: Start difference. First operand 254 states and 358 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:32:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:17,115 INFO L93 Difference]: Finished difference Result 601 states and 880 transitions. [2021-11-23 02:32:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:17,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 92 [2021-11-23 02:32:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:17,120 INFO L225 Difference]: With dead ends: 601 [2021-11-23 02:32:17,120 INFO L226 Difference]: Without dead ends: 371 [2021-11-23 02:32:17,122 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 02:32:17,123 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 55 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:17,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 451 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:32:17,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-23 02:32:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2021-11-23 02:32:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 251 states have (on average 1.454183266932271) internal successors, (365), 255 states have internal predecessors, (365), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2021-11-23 02:32:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 544 transitions. [2021-11-23 02:32:17,244 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 544 transitions. Word has length 92 [2021-11-23 02:32:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:17,245 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 544 transitions. [2021-11-23 02:32:17,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:32:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 544 transitions. [2021-11-23 02:32:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:32:17,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:17,249 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] [2021-11-23 02:32:17,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:32:17,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:17,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:17,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1114484453, now seen corresponding path program 1 times [2021-11-23 02:32:17,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:17,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463524941] [2021-11-23 02:32:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:17,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:17,337 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 02:32:17,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463524941] [2021-11-23 02:32:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463524941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559947495] [2021-11-23 02:32:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:17,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:17,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:17,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:17,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:32:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:17,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:17,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:17,911 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 02:32:17,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:18,148 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 02:32:18,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559947495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:18,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715817429] [2021-11-23 02:32:18,155 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2021-11-23 02:32:18,155 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:32:18,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:32:18,157 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:32:18,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:00,935 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:33:01,205 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2021-11-23 02:33:01,473 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:33:46,742 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:12,251 WARN L227 SmtUtils]: Spent 19.84s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:19,695 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:26,738 WARN L227 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 570 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:35,162 WARN L227 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 572 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:43,582 WARN L227 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 568 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:52,753 WARN L227 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:02,182 WARN L227 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 566 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:08,178 WARN L227 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 564 DAG size of output: 357 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:10,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1715817429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:10,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:35:10,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2021-11-23 02:35:10,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735417192] [2021-11-23 02:35:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:10,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:35:10,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:35:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:35:10,782 INFO L87 Difference]: Start difference. First operand 366 states and 544 transitions. Second operand has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:35:29,398 WARN L227 SmtUtils]: Spent 17.10s on a formula simplification. DAG size of input: 571 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:49,565 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 539 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:55,089 WARN L227 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 535 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:07,620 INFO L93 Difference]: Finished difference Result 826 states and 1288 transitions. [2021-11-23 02:36:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:36:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 93 [2021-11-23 02:36:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:07,632 INFO L225 Difference]: With dead ends: 826 [2021-11-23 02:36:07,632 INFO L226 Difference]: Without dead ends: 523 [2021-11-23 02:36:07,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 177.2s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:36:07,635 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 323 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:07,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 3503 Invalid, 2270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 02:36:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-23 02:36:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 428. [2021-11-23 02:36:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 309 states have (on average 1.5016181229773462) internal successors, (464), 315 states have internal predecessors, (464), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-23 02:36:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 649 transitions. [2021-11-23 02:36:07,819 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 649 transitions. Word has length 93 [2021-11-23 02:36:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:07,820 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 649 transitions. [2021-11-23 02:36:07,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2021-11-23 02:36:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 649 transitions. [2021-11-23 02:36:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 02:36:07,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:07,823 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] [2021-11-23 02:36:07,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:08,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:08,036 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1525821805, now seen corresponding path program 1 times [2021-11-23 02:36:08,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:08,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778268009] [2021-11-23 02:36:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:08,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:08,166 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 02:36:08,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:08,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778268009] [2021-11-23 02:36:08,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778268009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:08,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346281130] [2021-11-23 02:36:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:08,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:08,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:08,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abcbe30c-85db-44d6-84b8-997daa841121/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:36:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:08,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:36:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:08,677 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 02:36:08,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:36:08,878 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 02:36:08,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346281130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:36:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1551455445] [2021-11-23 02:36:08,888 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-23 02:36:08,888 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:36:08,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:36:08,890 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:36:08,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:37:18,732 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:37:18,998 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2021-11-23 02:37:19,253 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2021-11-23 02:37:19,504 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 426 for LOIs [2021-11-23 02:37:26,137 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2021-11-23 02:37:26,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2021-11-23 02:37:26,460 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 421 for LOIs [2021-11-23 02:38:01,132 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 378 for LOIs [2021-11-23 02:38:01,195 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 391 for LOIs [2021-11-23 02:38:01,379 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 386 for LOIs [2021-11-23 02:38:01,596 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 223 for LOIs [2021-11-23 02:38:01,643 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 381 for LOIs [2021-11-23 02:38:01,814 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 402 for LOIs [2021-11-23 02:38:02,236 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 225 for LOIs [2021-11-23 02:38:02,275 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:18,615 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:24,885 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:31,014 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 478 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:53,873 WARN L227 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:25,707 WARN L227 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 532 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:31,508 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 525 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:44,615 WARN L227 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 527 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:59,349 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 530 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:25,368 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 514 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)