./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product32.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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/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 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:06:52,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:06:52,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:06:52,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:06:52,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:06:52,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:06:52,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:06:52,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:06:52,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:06:52,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:06:52,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:06:52,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:06:52,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:06:52,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:06:52,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:06:52,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:06:52,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:06:52,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:06:52,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:06:52,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:06:52,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:06:52,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:06:52,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:06:52,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:06:52,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:06:52,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:06:52,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:06:52,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:06:52,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:06:52,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:06:52,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:06:52,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:06:52,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:06:52,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:06:52,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:06:52,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:06:52,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:06:52,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:06:52,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:06:52,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:06:52,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:06:52,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:06:52,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:06:52,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:06:52,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:06:52,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:06:52,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:06:52,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:06:52,795 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:06:52,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:06:52,795 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:06:52,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:06:52,795 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:06:52,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:06:52,796 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:06:52,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:06:52,796 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:06:52,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:06:52,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:06:52,797 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:06:52,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:06:52,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:06:52,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:06:52,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:06:52,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:06:52,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:06:52,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:06:52,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:06:52,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:06:52,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:06:52,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:06:52,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:06:52,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:06:52,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:06:52,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:52,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:06:52,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:06:52,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:06:52,802 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:06:52,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:06:52,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:06:52,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:06:52,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:06:52,803 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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b874c7ae88f1b18d69b67ffc194fd453f07c437ad434b3d3b7312d25946d05f [2021-11-23 02:06:53,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:06:53,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:06:53,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:06:53,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:06:53,157 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:06:53,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2021-11-23 02:06:53,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/data/d29f431f0/53f60674790d4e0bb90d348f4db2f00e/FLAG92357423b [2021-11-23 02:06:53,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:06:53,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2021-11-23 02:06:53,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/data/d29f431f0/53f60674790d4e0bb90d348f4db2f00e/FLAG92357423b [2021-11-23 02:06:54,089 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/data/d29f431f0/53f60674790d4e0bb90d348f4db2f00e [2021-11-23 02:06:54,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:06:54,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:06:54,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:54,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:06:54,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:06:54,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:54" (1/1) ... [2021-11-23 02:06:54,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e01a2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:54, skipping insertion in model container [2021-11-23 02:06:54,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:54" (1/1) ... [2021-11-23 02:06:54,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:06:54,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:06:54,856 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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2021-11-23 02:06:54,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:54,981 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:06:55,071 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_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45976,45989] [2021-11-23 02:06:55,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:55,130 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:06:55,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55 WrapperNode [2021-11-23 02:06:55,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:55,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:55,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:06:55,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:06:55,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,303 INFO L137 Inliner]: procedures = 134, calls = 236, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 981 [2021-11-23 02:06:55,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:55,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:06:55,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:06:55,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:06:55,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:06:55,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:06:55,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:06:55,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:06:55,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (1/1) ... [2021-11-23 02:06:55,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:55,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:55,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:06:55,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:06:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:06:55,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:06:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:06:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:06:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-23 02:06:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-23 02:06:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:06:55,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:06:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-23 02:06:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-23 02:06:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:06:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:06:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:06:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:06:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:06:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:06:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:06:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:06:55,527 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:06:55,527 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:06:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-23 02:06:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-23 02:06:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:06:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:06:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:06:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:06:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:06:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:06:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:06:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:06:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:06:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:06:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:06:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:06:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-23 02:06:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-23 02:06:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:06:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:06:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:06:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:06:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:06:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:06:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:06:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:06:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 02:06:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 02:06:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:06:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:06:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-23 02:06:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-23 02:06:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:06:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:06:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:06:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:06:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:06:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:06:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:06:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:06:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:06:55,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:06:55,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:06:55,831 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:06:55,834 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:06:56,795 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:06:57,325 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:06:57,325 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:06:57,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:57 BoogieIcfgContainer [2021-11-23 02:06:57,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:06:57,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:06:57,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:06:57,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:06:57,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:54" (1/3) ... [2021-11-23 02:06:57,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9f7cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:57, skipping insertion in model container [2021-11-23 02:06:57,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:55" (2/3) ... [2021-11-23 02:06:57,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9f7cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:57, skipping insertion in model container [2021-11-23 02:06:57,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:57" (3/3) ... [2021-11-23 02:06:57,339 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.c [2021-11-23 02:06:57,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:06:57,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:06:57,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:06:57,429 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 02:06:57,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:06:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-23 02:06:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 02:06:57,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:57,486 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2021-11-23 02:06:57,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash 308845768, now seen corresponding path program 1 times [2021-11-23 02:06:57,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067559227] [2021-11-23 02:06:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:57,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:06:57,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:57,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067559227] [2021-11-23 02:06:57,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067559227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:57,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:57,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:06:57,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700437872] [2021-11-23 02:06:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:57,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:06:57,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:57,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:06:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:06:57,953 INFO L87 Difference]: Start difference. First operand has 216 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:06:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:58,166 INFO L93 Difference]: Finished difference Result 340 states and 445 transitions. [2021-11-23 02:06:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:06:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2021-11-23 02:06:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:58,185 INFO L225 Difference]: With dead ends: 340 [2021-11-23 02:06:58,186 INFO L226 Difference]: Without dead ends: 213 [2021-11-23 02:06:58,191 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 02:06:58,194 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:58,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:06:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-23 02:06:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-23 02:06:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 120 states have (on average 1.275) internal successors, (153), 124 states have internal predecessors, (153), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 02:06:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2021-11-23 02:06:58,264 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 95 [2021-11-23 02:06:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:58,265 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2021-11-23 02:06:58,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:06:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2021-11-23 02:06:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 02:06:58,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:58,280 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:58,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:06:58,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2003268370, now seen corresponding path program 1 times [2021-11-23 02:06:58,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:58,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892029356] [2021-11-23 02:06:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:58,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:06:58,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:58,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892029356] [2021-11-23 02:06:58,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892029356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:58,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:58,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:58,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804849119] [2021-11-23 02:06:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:58,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:58,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:58,474 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:06:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:58,606 INFO L93 Difference]: Finished difference Result 336 states and 430 transitions. [2021-11-23 02:06:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:06:58,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2021-11-23 02:06:58,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:58,610 INFO L225 Difference]: With dead ends: 336 [2021-11-23 02:06:58,611 INFO L226 Difference]: Without dead ends: 215 [2021-11-23 02:06:58,613 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 02:06:58,614 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:58,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:06:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-23 02:06:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-23 02:06:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 122 states have (on average 1.2704918032786885) internal successors, (155), 126 states have internal predecessors, (155), 64 states have call successors, (64), 28 states have call predecessors, (64), 28 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-23 02:06:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 282 transitions. [2021-11-23 02:06:58,644 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 282 transitions. Word has length 107 [2021-11-23 02:06:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:58,645 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 282 transitions. [2021-11-23 02:06:58,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:06:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 282 transitions. [2021-11-23 02:06:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 02:06:58,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:58,651 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2021-11-23 02:06:58,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:06:58,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1072336065, now seen corresponding path program 1 times [2021-11-23 02:06:58,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586614262] [2021-11-23 02:06:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:58,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:06:58,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586614262] [2021-11-23 02:06:58,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586614262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:58,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:58,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:58,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948266134] [2021-11-23 02:06:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:58,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:58,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:58,797 INFO L87 Difference]: Start difference. First operand 215 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:06:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:58,958 INFO L93 Difference]: Finished difference Result 465 states and 631 transitions. [2021-11-23 02:06:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:06:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 101 [2021-11-23 02:06:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:58,967 INFO L225 Difference]: With dead ends: 465 [2021-11-23 02:06:58,967 INFO L226 Difference]: Without dead ends: 268 [2021-11-23 02:06:58,969 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 02:06:58,978 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 59 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:58,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 493 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:06:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-23 02:06:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2021-11-23 02:06:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 160 states have internal predecessors, (210), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-23 02:06:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 365 transitions. [2021-11-23 02:06:59,042 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 365 transitions. Word has length 101 [2021-11-23 02:06:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:59,043 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 365 transitions. [2021-11-23 02:06:59,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:06:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 365 transitions. [2021-11-23 02:06:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 02:06:59,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:59,053 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2021-11-23 02:06:59,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:06:59,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1385677261, now seen corresponding path program 1 times [2021-11-23 02:06:59,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:59,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703255520] [2021-11-23 02:06:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:59,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:06:59,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703255520] [2021-11-23 02:06:59,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703255520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:06:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184420763] [2021-11-23 02:06:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:59,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:59,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:59,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:06:59,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:06:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:59,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:06:59,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:06:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:06:59,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:07:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:07:00,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184420763] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:07:00,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1654592045] [2021-11-23 02:07:00,124 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2021-11-23 02:07:00,124 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:07:00,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:07:00,141 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:07:00,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:07:34,874 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:07:35,172 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 267 for LOIs [2021-11-23 02:07:37,581 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 02:07:37,632 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:07:37,881 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2021-11-23 02:07:41,430 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 277 for LOIs [2021-11-23 02:07:54,961 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-23 02:07:55,564 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2021-11-23 02:07:55,613 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 452 for LOIs [2021-11-23 02:07:56,099 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2021-11-23 02:07:56,187 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 431 for LOIs [2021-11-23 02:07:56,673 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2021-11-23 02:07:58,162 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 254 for LOIs [2021-11-23 02:07:58,246 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:09:02,076 WARN L227 SmtUtils]: Spent 13.34s on a formula simplification. DAG size of input: 590 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:09:26,591 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 578 DAG size of output: 369 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:09:41,352 WARN L227 SmtUtils]: Spent 11.62s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:08,763 WARN L227 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 452 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:21,724 WARN L227 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 478 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:42,926 WARN L227 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 431 DAG size of output: 255 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:53,168 WARN L227 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 450 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:11:35,519 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 531 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:10,450 WARN L227 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 586 DAG size of output: 477 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:20,248 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 583 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:27,451 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 577 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:12:43,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3810#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1| 1) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~8#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1| 2) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1|) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~18#1| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |outgoing__wrappee__AutoResponder_autoRespond_~client#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_deliver_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_~tmp~15#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1|) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~8#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~13#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~15#1|) (= ~__ste_client_name2~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1|) (= ~__ste_client_name1~0.base 0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1| 1) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1| 2) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing__wrappee__AutoResponder_verify_~client#1| 2) (<= ~__ste_email_from0~0 2147483647) (<= |outgoing__wrappee__AutoResponder_deliver_#in~client#1| 2) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~5#1| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~tmp~17#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1|) (<= 2 |outgoing__wrappee__AutoResponder_verify_~client#1|) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~14#1| 2147483648)) (<= |outgoing__wrappee__AutoResponder_incoming_~client#1| 2) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1| 2) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_deliver_~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1|) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483647) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= 2 |outgoing__wrappee__AutoResponder_verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1| 2) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~18#1|) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1| 2) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483648)) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_deliver_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= 1 |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_verify_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_deliver_~client#1| 2) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1| 2) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1|) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1| 1) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 2 |outgoing__wrappee__AutoResponder_deliver_#in~client#1|) (= ~__ste_client_name2~0.base 0) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~14#1| 2147483647) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1| 2) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~tmp~17#1| 1) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1| 1) (<= 1 ~__ste_client_autoResponse1~0) (= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~tmp~24#1| 0) (= ~__ste_Client_Keyring2_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_verify_~msg#1|) (= ~head~0.base 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1|) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_verify_#in~msg#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_verify_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Sign_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Verify_~msg#1|) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (= |outgoing__wrappee__AutoResponder_verify_~tmp~23#1| 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_deliver_#in~msg#1| 1) (<= 2 ~__ste_email_to0~0) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1| 1) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~13#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1|) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1| 2) (= ~__ste_email_body1~0.base 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1|) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~5#1|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1| 2) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2021-11-23 02:12:43,854 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:12:43,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:12:43,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 02:12:43,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808831820] [2021-11-23 02:12:43,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:12:43,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:12:43,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:12:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=5726, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 02:12:43,860 INFO L87 Difference]: Start difference. First operand 263 states and 365 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:12:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:44,193 INFO L93 Difference]: Finished difference Result 659 states and 980 transitions. [2021-11-23 02:12:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:12:44,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 102 [2021-11-23 02:12:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:44,199 INFO L225 Difference]: With dead ends: 659 [2021-11-23 02:12:44,200 INFO L226 Difference]: Without dead ends: 538 [2021-11-23 02:12:44,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 285.6s TimeCoverageRelationStatistics Valid=280, Invalid=5726, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 02:12:44,206 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 222 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:44,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 983 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:12:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-23 02:12:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 523. [2021-11-23 02:12:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 337 states have (on average 1.4718100890207715) internal successors, (496), 341 states have internal predecessors, (496), 157 states have call successors, (157), 28 states have call predecessors, (157), 28 states have return successors, (156), 155 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-23 02:12:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 809 transitions. [2021-11-23 02:12:44,265 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 809 transitions. Word has length 102 [2021-11-23 02:12:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:44,266 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 809 transitions. [2021-11-23 02:12:44,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-23 02:12:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 809 transitions. [2021-11-23 02:12:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 02:12:44,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:44,274 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:44,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:12:44,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:44,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash -835396643, now seen corresponding path program 1 times [2021-11-23 02:12:44,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:44,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603217018] [2021-11-23 02:12:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:44,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:44,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:44,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603217018] [2021-11-23 02:12:44,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603217018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:44,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:44,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:44,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13216277] [2021-11-23 02:12:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:44,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:44,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:44,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:44,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:44,609 INFO L87 Difference]: Start difference. First operand 523 states and 809 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:44,745 INFO L93 Difference]: Finished difference Result 1276 states and 2016 transitions. [2021-11-23 02:12:44,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 119 [2021-11-23 02:12:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:44,754 INFO L225 Difference]: With dead ends: 1276 [2021-11-23 02:12:44,754 INFO L226 Difference]: Without dead ends: 785 [2021-11-23 02:12:44,756 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 02:12:44,757 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 57 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:44,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 508 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:44,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-11-23 02:12:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 780. [2021-11-23 02:12:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 515 states have (on average 1.4932038834951455) internal successors, (769), 519 states have internal predecessors, (769), 236 states have call successors, (236), 28 states have call predecessors, (236), 28 states have return successors, (235), 234 states have call predecessors, (235), 235 states have call successors, (235) [2021-11-23 02:12:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1240 transitions. [2021-11-23 02:12:44,811 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1240 transitions. Word has length 119 [2021-11-23 02:12:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:44,812 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1240 transitions. [2021-11-23 02:12:44,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1240 transitions. [2021-11-23 02:12:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 02:12:44,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:44,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:44,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:12:44,820 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1357067282, now seen corresponding path program 1 times [2021-11-23 02:12:44,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:44,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558882447] [2021-11-23 02:12:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:44,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:44,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:44,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558882447] [2021-11-23 02:12:44,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558882447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:44,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:44,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:44,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923077524] [2021-11-23 02:12:44,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:44,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:44,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:44,928 INFO L87 Difference]: Start difference. First operand 780 states and 1240 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:45,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:45,081 INFO L93 Difference]: Finished difference Result 1898 states and 3063 transitions. [2021-11-23 02:12:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:45,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 120 [2021-11-23 02:12:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:45,092 INFO L225 Difference]: With dead ends: 1898 [2021-11-23 02:12:45,092 INFO L226 Difference]: Without dead ends: 1180 [2021-11-23 02:12:45,095 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 02:12:45,097 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 55 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:45,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-11-23 02:12:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1175. [2021-11-23 02:12:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 791 states have (on average 1.5031605562579013) internal successors, (1189), 795 states have internal predecessors, (1189), 355 states have call successors, (355), 28 states have call predecessors, (355), 28 states have return successors, (354), 353 states have call predecessors, (354), 354 states have call successors, (354) [2021-11-23 02:12:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1898 transitions. [2021-11-23 02:12:45,170 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1898 transitions. Word has length 120 [2021-11-23 02:12:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:45,171 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1898 transitions. [2021-11-23 02:12:45,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1898 transitions. [2021-11-23 02:12:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 02:12:45,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:45,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:45,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:12:45,180 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2105437920, now seen corresponding path program 1 times [2021-11-23 02:12:45,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:45,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259408820] [2021-11-23 02:12:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:45,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:12:45,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:45,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259408820] [2021-11-23 02:12:45,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259408820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:45,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:45,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:45,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253784070] [2021-11-23 02:12:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:45,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:45,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:45,251 INFO L87 Difference]: Start difference. First operand 1175 states and 1898 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:45,413 INFO L93 Difference]: Finished difference Result 2801 states and 4575 transitions. [2021-11-23 02:12:45,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:45,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2021-11-23 02:12:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:45,430 INFO L225 Difference]: With dead ends: 2801 [2021-11-23 02:12:45,430 INFO L226 Difference]: Without dead ends: 1768 [2021-11-23 02:12:45,435 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 02:12:45,436 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 53 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:45,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 485 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-23 02:12:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2021-11-23 02:12:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1217 states have (on average 1.5094494658997535) internal successors, (1837), 1221 states have internal predecessors, (1837), 517 states have call successors, (517), 28 states have call predecessors, (517), 28 states have return successors, (516), 515 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-23 02:12:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2870 transitions. [2021-11-23 02:12:45,557 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2870 transitions. Word has length 110 [2021-11-23 02:12:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:45,558 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2870 transitions. [2021-11-23 02:12:45,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2870 transitions. [2021-11-23 02:12:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 02:12:45,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:45,570 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:45,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:12:45,570 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1774168815, now seen corresponding path program 1 times [2021-11-23 02:12:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986109310] [2021-11-23 02:12:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:45,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:45,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:45,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986109310] [2021-11-23 02:12:45,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986109310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:45,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:45,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:45,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014434204] [2021-11-23 02:12:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:45,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:45,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:45,647 INFO L87 Difference]: Start difference. First operand 1763 states and 2870 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:45,867 INFO L93 Difference]: Finished difference Result 4186 states and 6883 transitions. [2021-11-23 02:12:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 122 [2021-11-23 02:12:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:45,892 INFO L225 Difference]: With dead ends: 4186 [2021-11-23 02:12:45,892 INFO L226 Difference]: Without dead ends: 2702 [2021-11-23 02:12:45,899 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 02:12:45,900 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 51 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:45,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 485 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-11-23 02:12:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2697. [2021-11-23 02:12:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1906 states have (on average 1.512591815320042) internal successors, (2883), 1910 states have internal predecessors, (2883), 762 states have call successors, (762), 28 states have call predecessors, (762), 28 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-23 02:12:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4406 transitions. [2021-11-23 02:12:46,129 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4406 transitions. Word has length 122 [2021-11-23 02:12:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:46,130 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 4406 transitions. [2021-11-23 02:12:46,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4406 transitions. [2021-11-23 02:12:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 02:12:46,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:46,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:46,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:12:46,148 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -646985369, now seen corresponding path program 1 times [2021-11-23 02:12:46,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933867743] [2021-11-23 02:12:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:46,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:46,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:46,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933867743] [2021-11-23 02:12:46,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933867743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:46,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:46,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:46,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355028836] [2021-11-23 02:12:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:46,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:46,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:46,229 INFO L87 Difference]: Start difference. First operand 2697 states and 4406 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:46,510 INFO L93 Difference]: Finished difference Result 6702 states and 11043 transitions. [2021-11-23 02:12:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 123 [2021-11-23 02:12:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:46,547 INFO L225 Difference]: With dead ends: 6702 [2021-11-23 02:12:46,547 INFO L226 Difference]: Without dead ends: 4427 [2021-11-23 02:12:46,558 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 02:12:46,560 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 49 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:46,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 501 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2021-11-23 02:12:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4422. [2021-11-23 02:12:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3138 states have (on average 1.502868068833652) internal successors, (4716), 3142 states have internal predecessors, (4716), 1255 states have call successors, (1255), 28 states have call predecessors, (1255), 28 states have return successors, (1254), 1253 states have call predecessors, (1254), 1254 states have call successors, (1254) [2021-11-23 02:12:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7225 transitions. [2021-11-23 02:12:46,878 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7225 transitions. Word has length 123 [2021-11-23 02:12:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:46,878 INFO L470 AbstractCegarLoop]: Abstraction has 4422 states and 7225 transitions. [2021-11-23 02:12:46,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7225 transitions. [2021-11-23 02:12:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 02:12:46,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:46,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:46,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:12:46,908 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:46,909 INFO L85 PathProgramCache]: Analyzing trace with hash 717878611, now seen corresponding path program 1 times [2021-11-23 02:12:46,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:46,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222445212] [2021-11-23 02:12:46,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:46,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:46,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222445212] [2021-11-23 02:12:46,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222445212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:46,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:46,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:46,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731820528] [2021-11-23 02:12:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:46,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:46,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:46,983 INFO L87 Difference]: Start difference. First operand 4422 states and 7225 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:47,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:47,413 INFO L93 Difference]: Finished difference Result 11118 states and 18328 transitions. [2021-11-23 02:12:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:47,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 124 [2021-11-23 02:12:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:47,474 INFO L225 Difference]: With dead ends: 11118 [2021-11-23 02:12:47,475 INFO L226 Difference]: Without dead ends: 7384 [2021-11-23 02:12:47,489 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 02:12:47,490 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 47 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:47,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2021-11-23 02:12:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7379. [2021-11-23 02:12:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 5273 states have (on average 1.4983880144130477) internal successors, (7901), 5277 states have internal predecessors, (7901), 2077 states have call successors, (2077), 28 states have call predecessors, (2077), 28 states have return successors, (2076), 2075 states have call predecessors, (2076), 2076 states have call successors, (2076) [2021-11-23 02:12:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 12054 transitions. [2021-11-23 02:12:48,012 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 12054 transitions. Word has length 124 [2021-11-23 02:12:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:48,012 INFO L470 AbstractCegarLoop]: Abstraction has 7379 states and 12054 transitions. [2021-11-23 02:12:48,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 12054 transitions. [2021-11-23 02:12:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 02:12:48,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:48,054 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:48,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:12:48,055 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash 980575778, now seen corresponding path program 1 times [2021-11-23 02:12:48,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:48,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780214393] [2021-11-23 02:12:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:48,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:12:48,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:48,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780214393] [2021-11-23 02:12:48,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780214393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:48,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:48,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:48,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859007708] [2021-11-23 02:12:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:48,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:48,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:48,114 INFO L87 Difference]: Start difference. First operand 7379 states and 12054 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:48,749 INFO L93 Difference]: Finished difference Result 18585 states and 30590 transitions. [2021-11-23 02:12:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2021-11-23 02:12:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:48,846 INFO L225 Difference]: With dead ends: 18585 [2021-11-23 02:12:48,846 INFO L226 Difference]: Without dead ends: 12328 [2021-11-23 02:12:48,874 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 02:12:48,875 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 45 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:48,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 488 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-11-23 02:12:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12323. [2021-11-23 02:12:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12323 states, 9014 states have (on average 1.5001109385400488) internal successors, (13522), 9018 states have internal predecessors, (13522), 3280 states have call successors, (3280), 28 states have call predecessors, (3280), 28 states have return successors, (3279), 3278 states have call predecessors, (3279), 3279 states have call successors, (3279) [2021-11-23 02:12:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 20081 transitions. [2021-11-23 02:12:49,743 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 20081 transitions. Word has length 114 [2021-11-23 02:12:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:49,744 INFO L470 AbstractCegarLoop]: Abstraction has 12323 states and 20081 transitions. [2021-11-23 02:12:49,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 20081 transitions. [2021-11-23 02:12:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-23 02:12:49,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:49,800 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:49,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:12:49,800 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash -515641356, now seen corresponding path program 1 times [2021-11-23 02:12:49,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:49,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360848815] [2021-11-23 02:12:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:49,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:12:49,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360848815] [2021-11-23 02:12:49,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360848815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:49,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:49,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:49,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835320804] [2021-11-23 02:12:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:49,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:49,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:49,864 INFO L87 Difference]: Start difference. First operand 12323 states and 20081 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:51,088 INFO L93 Difference]: Finished difference Result 32589 states and 53452 transitions. [2021-11-23 02:12:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2021-11-23 02:12:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:51,183 INFO L225 Difference]: With dead ends: 32589 [2021-11-23 02:12:51,183 INFO L226 Difference]: Without dead ends: 21840 [2021-11-23 02:12:51,225 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 02:12:51,226 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 43 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:51,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 492 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21840 states. [2021-11-23 02:12:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21840 to 21835. [2021-11-23 02:12:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21835 states, 16076 states have (on average 1.4925976611097287) internal successors, (23995), 16080 states have internal predecessors, (23995), 5730 states have call successors, (5730), 28 states have call predecessors, (5730), 28 states have return successors, (5729), 5728 states have call predecessors, (5729), 5729 states have call successors, (5729) [2021-11-23 02:12:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21835 states to 21835 states and 35454 transitions. [2021-11-23 02:12:52,686 INFO L78 Accepts]: Start accepts. Automaton has 21835 states and 35454 transitions. Word has length 126 [2021-11-23 02:12:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:52,688 INFO L470 AbstractCegarLoop]: Abstraction has 21835 states and 35454 transitions. [2021-11-23 02:12:52,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:12:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 21835 states and 35454 transitions. [2021-11-23 02:12:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 02:12:52,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:52,758 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:52,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:12:52,758 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 338949480, now seen corresponding path program 1 times [2021-11-23 02:12:52,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:52,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271841855] [2021-11-23 02:12:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:52,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:12:52,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271841855] [2021-11-23 02:12:52,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271841855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:52,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:52,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:52,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552723332] [2021-11-23 02:12:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:52,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:52,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:52,826 INFO L87 Difference]: Start difference. First operand 21835 states and 35454 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:54,994 INFO L93 Difference]: Finished difference Result 59276 states and 96704 transitions. [2021-11-23 02:12:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2021-11-23 02:12:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:55,169 INFO L225 Difference]: With dead ends: 59276 [2021-11-23 02:12:55,169 INFO L226 Difference]: Without dead ends: 39610 [2021-11-23 02:12:55,220 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 02:12:55,221 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 41 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:55,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 492 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:12:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39610 states. [2021-11-23 02:12:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39610 to 39605. [2021-11-23 02:12:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39605 states, 29333 states have (on average 1.481982749803975) internal successors, (43471), 29337 states have internal predecessors, (43471), 10243 states have call successors, (10243), 28 states have call predecessors, (10243), 28 states have return successors, (10242), 10241 states have call predecessors, (10242), 10242 states have call successors, (10242) [2021-11-23 02:12:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39605 states to 39605 states and 63956 transitions. [2021-11-23 02:12:58,007 INFO L78 Accepts]: Start accepts. Automaton has 39605 states and 63956 transitions. Word has length 116 [2021-11-23 02:12:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:58,008 INFO L470 AbstractCegarLoop]: Abstraction has 39605 states and 63956 transitions. [2021-11-23 02:12:58,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:12:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 39605 states and 63956 transitions. [2021-11-23 02:12:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 02:12:58,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:58,062 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:58,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:12:58,062 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1805298199, now seen corresponding path program 1 times [2021-11-23 02:12:58,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583938617] [2021-11-23 02:12:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:58,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:12:58,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583938617] [2021-11-23 02:12:58,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583938617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:58,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:58,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:58,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582446361] [2021-11-23 02:12:58,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:58,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:58,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:58,324 INFO L87 Difference]: Start difference. First operand 39605 states and 63956 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:13:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:01,032 INFO L93 Difference]: Finished difference Result 73174 states and 118339 transitions. [2021-11-23 02:13:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 117 [2021-11-23 02:13:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:01,381 INFO L225 Difference]: With dead ends: 73174 [2021-11-23 02:13:01,382 INFO L226 Difference]: Without dead ends: 73053 [2021-11-23 02:13:01,406 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 02:13:01,407 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 39 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:01,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 490 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:13:01,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73053 states. [2021-11-23 02:13:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73053 to 73048. [2021-11-23 02:13:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73048 states, 54408 states have (on average 1.4680377885605058) internal successors, (79873), 54412 states have internal predecessors, (79873), 18611 states have call successors, (18611), 28 states have call predecessors, (18611), 28 states have return successors, (18610), 18609 states have call predecessors, (18610), 18610 states have call successors, (18610) [2021-11-23 02:13:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73048 states to 73048 states and 117094 transitions. [2021-11-23 02:13:05,925 INFO L78 Accepts]: Start accepts. Automaton has 73048 states and 117094 transitions. Word has length 117 [2021-11-23 02:13:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:05,926 INFO L470 AbstractCegarLoop]: Abstraction has 73048 states and 117094 transitions. [2021-11-23 02:13:05,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:13:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 73048 states and 117094 transitions. [2021-11-23 02:13:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-23 02:13:05,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:05,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:05,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:13:05,992 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:05,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1744584226, now seen corresponding path program 1 times [2021-11-23 02:13:05,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:05,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541890491] [2021-11-23 02:13:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:05,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-23 02:13:06,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:06,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541890491] [2021-11-23 02:13:06,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541890491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:06,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:06,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 02:13:06,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645317622] [2021-11-23 02:13:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:06,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:13:06,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:06,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:13:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:13:06,215 INFO L87 Difference]: Start difference. First operand 73048 states and 117094 transitions. Second operand has 12 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-23 02:13:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:11,041 INFO L93 Difference]: Finished difference Result 103972 states and 166967 transitions. [2021-11-23 02:13:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:13:11,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 129 [2021-11-23 02:13:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:11,664 INFO L225 Difference]: With dead ends: 103972 [2021-11-23 02:13:11,664 INFO L226 Difference]: Without dead ends: 103854 [2021-11-23 02:13:11,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:13:11,709 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 397 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:11,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1893 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:13:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103854 states. [2021-11-23 02:13:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103854 to 102813. [2021-11-23 02:13:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102813 states, 77574 states have (on average 1.4744888751385774) internal successors, (114382), 77582 states have internal predecessors, (114382), 25185 states have call successors, (25185), 54 states have call predecessors, (25185), 53 states have return successors, (25181), 25180 states have call predecessors, (25181), 25181 states have call successors, (25181) [2021-11-23 02:13:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102813 states to 102813 states and 164748 transitions. [2021-11-23 02:13:18,423 INFO L78 Accepts]: Start accepts. Automaton has 102813 states and 164748 transitions. Word has length 129 [2021-11-23 02:13:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 102813 states and 164748 transitions. [2021-11-23 02:13:18,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-11-23 02:13:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 102813 states and 164748 transitions. [2021-11-23 02:13:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 02:13:18,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:18,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:18,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:13:18,487 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:18,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2115581161, now seen corresponding path program 1 times [2021-11-23 02:13:18,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:18,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332418124] [2021-11-23 02:13:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:18,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:13:18,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:18,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332418124] [2021-11-23 02:13:18,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332418124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:18,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119923235] [2021-11-23 02:13:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:18,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:18,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:18,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:18,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cbde1c2-bd2a-4e2b-bf4a-5a334d97927a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:13:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:19,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-23 02:13:19,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:13:20,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:13:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 02:13:21,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119923235] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:13:21,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:13:21,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21, 22] total 44 [2021-11-23 02:13:21,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152192672] [2021-11-23 02:13:21,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:21,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:13:21,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:13:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1753, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 02:13:21,579 INFO L87 Difference]: Start difference. First operand 102813 states and 164748 transitions. Second operand has 21 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 13 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (18), 13 states have call predecessors, (18), 12 states have call successors, (18) [2021-11-23 02:13:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:33,569 INFO L93 Difference]: Finished difference Result 153905 states and 246136 transitions. [2021-11-23 02:13:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 02:13:33,570 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.25) internal successors, (68), 16 states have internal predecessors, (68), 13 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (18), 13 states have call predecessors, (18), 12 states have call successors, (18) Word has length 118 [2021-11-23 02:13:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:34,375 INFO L225 Difference]: With dead ends: 153905 [2021-11-23 02:13:34,375 INFO L226 Difference]: Without dead ends: 153679 [2021-11-23 02:13:34,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=358, Invalid=3802, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 02:13:34,438 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 685 mSDsluCounter, 4714 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 4424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:34,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 4299 Invalid, 4424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:13:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153679 states.