./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product19.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_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/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_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/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_03dabaa5-227e-4512-a8ee-5561167d9bac/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 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:28:18,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:28:18,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:28:18,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:28:18,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:28:18,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:28:18,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:28:18,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:28:18,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:28:18,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:28:18,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:28:18,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:28:18,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:28:18,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:28:18,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:28:18,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:28:18,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:28:18,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:28:18,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:28:18,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:28:18,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:28:18,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:28:18,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:28:18,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:28:18,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:28:18,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:28:18,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:28:18,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:28:18,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:28:18,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:28:18,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:28:18,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:28:18,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:28:18,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:28:18,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:28:18,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:28:18,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:28:18,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:28:18,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:28:18,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:28:18,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:28:18,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:28:18,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:28:18,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:28:18,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:28:18,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:28:18,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:28:18,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:28:18,790 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:28:18,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:28:18,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:28:18,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:28:18,791 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:28:18,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:28:18,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:28:18,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:28:18,792 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:28:18,792 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:28:18,792 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:28:18,792 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:28:18,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:28:18,793 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:28:18,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:28:18,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:28:18,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:28:18,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:28:18,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:28:18,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:28:18,795 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:28:18,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:28:18,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:28:18,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:28:18,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:28:18,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:28:18,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:28:18,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:28:18,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:28:18,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:28:18,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:28:18,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:28:18,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:28:18,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:28:18,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:28:18,799 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_03dabaa5-227e-4512-a8ee-5561167d9bac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9deea958caebdff7c89a17deb67516eff149386872824a7682accca78686b765 [2021-11-23 02:28:19,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:28:19,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:28:19,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:28:19,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:28:19,137 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:28:19,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2021-11-23 02:28:19,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/data/606a06aaa/3c8e13efcfc549459ffb41ce034c710b/FLAGd10618a62 [2021-11-23 02:28:19,944 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:28:19,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c [2021-11-23 02:28:19,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/data/606a06aaa/3c8e13efcfc549459ffb41ce034c710b/FLAGd10618a62 [2021-11-23 02:28:20,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/data/606a06aaa/3c8e13efcfc549459ffb41ce034c710b [2021-11-23 02:28:20,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:28:20,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:28:20,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:28:20,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:28:20,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:28:20,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:20" (1/1) ... [2021-11-23 02:28:20,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343cc378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:20, skipping insertion in model container [2021-11-23 02:28:20,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:28:20" (1/1) ... [2021-11-23 02:28:20,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:28:20,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:28:20,838 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_03dabaa5-227e-4512-a8ee-5561167d9bac/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c[39319,39332] [2021-11-23 02:28:20,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:28:20,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:28:21,095 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_03dabaa5-227e-4512-a8ee-5561167d9bac/sv-benchmarks/c/product-lines/email_spec0_product19.cil.c[39319,39332] [2021-11-23 02:28:21,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:28:21,182 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:28:21,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21 WrapperNode [2021-11-23 02:28:21,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:28:21,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:28:21,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:28:21,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:28:21,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,347 INFO L137 Inliner]: procedures = 127, calls = 198, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 992 [2021-11-23 02:28:21,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:28:21,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:28:21,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:28:21,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:28:21,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:28:21,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:28:21,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:28:21,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:28:21,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (1/1) ... [2021-11-23 02:28:21,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:28:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:21,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:28:21,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:28:21,519 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:28:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:28:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:28:21,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:28:21,524 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:28:21,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:28:21,525 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:28:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:28:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:28:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:28:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:28:21,526 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:28:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:28:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:28:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:28:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:28:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:28:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:28:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:28:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:28:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:28:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:28:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:28:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:28:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:28:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:28:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:28:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:28:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:28:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:28:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:28:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:28:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:28:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:28:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:28:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:28:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:28:21,811 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:28:21,814 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:28:22,917 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:28:23,481 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:28:23,481 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:28:23,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:23 BoogieIcfgContainer [2021-11-23 02:28:23,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:28:23,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:28:23,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:28:23,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:28:23,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:28:20" (1/3) ... [2021-11-23 02:28:23,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d3136f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:23, skipping insertion in model container [2021-11-23 02:28:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:28:21" (2/3) ... [2021-11-23 02:28:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d3136f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:28:23, skipping insertion in model container [2021-11-23 02:28:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:28:23" (3/3) ... [2021-11-23 02:28:23,504 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product19.cil.c [2021-11-23 02:28:23,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:28:23,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:28:23,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:28:23,595 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 02:28:23,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:28:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 02:28:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 02:28:23,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:23,660 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:23,660 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:23,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 362898652, now seen corresponding path program 1 times [2021-11-23 02:28:23,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:23,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129254344] [2021-11-23 02:28:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:23,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:24,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:24,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129254344] [2021-11-23 02:28:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129254344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:24,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:24,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:28:24,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101362506] [2021-11-23 02:28:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:24,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:28:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:28:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:28:24,190 INFO L87 Difference]: Start difference. First operand has 150 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 92 states have internal predecessors, (122), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:24,349 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2021-11-23 02:28:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:28:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2021-11-23 02:28:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:24,372 INFO L225 Difference]: With dead ends: 217 [2021-11-23 02:28:24,372 INFO L226 Difference]: Without dead ends: 147 [2021-11-23 02:28:24,379 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 02:28:24,387 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:24,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-23 02:28:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-23 02:28:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.3181818181818181) internal successors, (116), 89 states have internal predecessors, (116), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-23 02:28:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2021-11-23 02:28:24,468 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 64 [2021-11-23 02:28:24,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:24,470 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2021-11-23 02:28:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2021-11-23 02:28:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:28:24,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:24,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:24,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:28:24,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2115615507, now seen corresponding path program 1 times [2021-11-23 02:28:24,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:24,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855887170] [2021-11-23 02:28:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:24,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:24,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:24,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855887170] [2021-11-23 02:28:24,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855887170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:24,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:24,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:24,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641804096] [2021-11-23 02:28:24,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:24,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:24,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:24,659 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:24,780 INFO L93 Difference]: Finished difference Result 213 states and 278 transitions. [2021-11-23 02:28:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-23 02:28:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:24,784 INFO L225 Difference]: With dead ends: 213 [2021-11-23 02:28:24,784 INFO L226 Difference]: Without dead ends: 149 [2021-11-23 02:28:24,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:24,788 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:24,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-23 02:28:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-11-23 02:28:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-23 02:28:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2021-11-23 02:28:24,811 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 65 [2021-11-23 02:28:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:24,812 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2021-11-23 02:28:24,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2021-11-23 02:28:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:28:24,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:24,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:24,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:28:24,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash 173930239, now seen corresponding path program 1 times [2021-11-23 02:28:24,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:24,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454184465] [2021-11-23 02:28:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:24,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:24,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:24,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454184465] [2021-11-23 02:28:24,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454184465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:28:24,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:28:24,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:28:24,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971511226] [2021-11-23 02:28:24,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:28:24,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:28:24,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:28:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:28:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:24,970 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:28:25,123 INFO L93 Difference]: Finished difference Result 328 states and 461 transitions. [2021-11-23 02:28:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:28:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-23 02:28:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:28:25,128 INFO L225 Difference]: With dead ends: 328 [2021-11-23 02:28:25,129 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 02:28:25,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:28:25,133 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 57 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:28:25,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 355 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:28:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 02:28:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2021-11-23 02:28:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 122 states have (on average 1.401639344262295) internal successors, (171), 123 states have internal predecessors, (171), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 02:28:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 276 transitions. [2021-11-23 02:28:25,170 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 276 transitions. Word has length 70 [2021-11-23 02:28:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:28:25,172 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 276 transitions. [2021-11-23 02:28:25,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:28:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 276 transitions. [2021-11-23 02:28:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:28:25,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:28:25,183 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:28:25,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:28:25,184 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:28:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:28:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash -190186898, now seen corresponding path program 1 times [2021-11-23 02:28:25,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:28:25,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416366330] [2021-11-23 02:28:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:25,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:28:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:25,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:28:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416366330] [2021-11-23 02:28:25,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416366330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:28:25,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98530142] [2021-11-23 02:28:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:28:25,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:28:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:28:25,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:28:25,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:28:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:28:25,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:28:25,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:28:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:25,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:28:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:28:26,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98530142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:28:26,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488339956] [2021-11-23 02:28:26,130 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-23 02:28:26,130 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:28:26,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:28:26,140 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:28:26,141 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:29:00,271 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:29:00,676 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:29:01,071 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 472 for LOIs [2021-11-23 02:29:27,836 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 470 for LOIs [2021-11-23 02:29:59,819 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2021-11-23 02:29:59,856 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 02:29:59,912 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2021-11-23 02:30:00,211 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 237 for LOIs [2021-11-23 02:30:00,323 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:30:38,053 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 486 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:49,633 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 508 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:30:55,933 WARN L227 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 559 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:02,381 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 561 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:23,874 WARN L227 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 560 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:40,938 WARN L227 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 526 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:31:57,579 WARN L227 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 522 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:04,343 WARN L227 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 535 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:24,784 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 570 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:31,891 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 582 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:32:40,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1488339956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:40,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:32:40,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2021-11-23 02:32:40,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232675075] [2021-11-23 02:32:40,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:40,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 02:32:40,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 02:32:40,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2117, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 02:32:40,008 INFO L87 Difference]: Start difference. First operand 192 states and 276 transitions. Second operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-11-23 02:32:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:55,403 INFO L93 Difference]: Finished difference Result 500 states and 766 transitions. [2021-11-23 02:32:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 02:32:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 71 [2021-11-23 02:32:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:55,408 INFO L225 Difference]: With dead ends: 500 [2021-11-23 02:32:55,408 INFO L226 Difference]: Without dead ends: 326 [2021-11-23 02:32:55,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 162.7s TimeCoverageRelationStatistics Valid=147, Invalid=2205, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 02:32:55,411 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 213 mSDsluCounter, 3790 mSDsCounter, 0 mSdLazyCounter, 4240 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 4273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:55,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 3916 Invalid, 4273 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 4240 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2021-11-23 02:32:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-23 02:32:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 274. [2021-11-23 02:32:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 189 states have (on average 1.4550264550264551) internal successors, (275), 191 states have internal predecessors, (275), 62 states have call successors, (62), 23 states have call predecessors, (62), 22 states have return successors, (62), 59 states have call predecessors, (62), 61 states have call successors, (62) [2021-11-23 02:32:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 399 transitions. [2021-11-23 02:32:55,516 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 399 transitions. Word has length 71 [2021-11-23 02:32:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:55,517 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 399 transitions. [2021-11-23 02:32:55,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.25) internal successors, (35), 26 states have internal predecessors, (35), 14 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-11-23 02:32:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 399 transitions. [2021-11-23 02:32:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:32:55,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:55,521 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:55,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:55,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:55,738 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1306969907, now seen corresponding path program 1 times [2021-11-23 02:32:55,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72891927] [2021-11-23 02:32:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:55,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:55,863 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 02:32:55,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72891927] [2021-11-23 02:32:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72891927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:55,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:55,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:32:55,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748784885] [2021-11-23 02:32:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:55,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:32:55,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:32:55,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:55,866 INFO L87 Difference]: Start difference. First operand 274 states and 399 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:32:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:56,091 INFO L93 Difference]: Finished difference Result 662 states and 1004 transitions. [2021-11-23 02:32:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:32:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2021-11-23 02:32:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:56,096 INFO L225 Difference]: With dead ends: 662 [2021-11-23 02:32:56,096 INFO L226 Difference]: Without dead ends: 414 [2021-11-23 02:32:56,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:32:56,098 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 55 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:56,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 361 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:32:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-23 02:32:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 407. [2021-11-23 02:32:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 299 states have internal predecessors, (452), 87 states have call successors, (87), 23 states have call predecessors, (87), 22 states have return successors, (87), 84 states have call predecessors, (87), 86 states have call successors, (87) [2021-11-23 02:32:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 626 transitions. [2021-11-23 02:32:56,222 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 626 transitions. Word has length 76 [2021-11-23 02:32:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:56,223 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 626 transitions. [2021-11-23 02:32:56,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:32:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 626 transitions. [2021-11-23 02:32:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:32:56,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:56,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:56,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:32:56,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:56,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1463758427, now seen corresponding path program 1 times [2021-11-23 02:32:56,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:56,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168274054] [2021-11-23 02:32:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:56,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:32:56,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:56,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168274054] [2021-11-23 02:32:56,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168274054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:56,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773833817] [2021-11-23 02:32:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:56,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:56,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:56,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:56,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:32:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:56,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:32:56,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:32:56,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:32:56,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773833817] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863314797] [2021-11-23 02:32:56,847 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 02:32:56,848 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:32:56,848 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:32:56,849 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:32:56,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:20,568 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:33:20,824 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:33:21,107 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 472 for LOIs [2021-11-23 02:33:43,573 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 470 for LOIs [2021-11-23 02:34:15,345 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2021-11-23 02:34:15,383 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 02:34:15,427 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2021-11-23 02:34:15,676 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 446 for LOIs [2021-11-23 02:34:16,202 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2021-11-23 02:34:16,246 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:34:48,316 WARN L227 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 486 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:34:58,931 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 508 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:04,284 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 559 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:09,667 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 561 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:27,407 WARN L227 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 560 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:00,760 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 522 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:06,390 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 535 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:24,929 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 570 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:31,774 WARN L227 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 582 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:51,662 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 612 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:58,061 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 612 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:05,187 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 610 DAG size of output: 396 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:12,984 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 667 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:12,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1863314797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:12,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:37:12,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2021-11-23 02:37:12,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957616044] [2021-11-23 02:37:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:12,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-23 02:37:12,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-23 02:37:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2691, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 02:37:12,993 INFO L87 Difference]: Start difference. First operand 407 states and 626 transitions. Second operand has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-23 02:37:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:28,877 INFO L93 Difference]: Finished difference Result 513 states and 784 transitions. [2021-11-23 02:37:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-23 02:37:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 76 [2021-11-23 02:37:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:28,883 INFO L225 Difference]: With dead ends: 513 [2021-11-23 02:37:28,883 INFO L226 Difference]: Without dead ends: 456 [2021-11-23 02:37:28,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 179.9s TimeCoverageRelationStatistics Valid=179, Invalid=2791, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 02:37:28,886 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 203 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 4276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:28,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 3627 Invalid, 4276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2021-11-23 02:37:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-23 02:37:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 411. [2021-11-23 02:37:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 302 states have internal predecessors, (455), 87 states have call successors, (87), 24 states have call predecessors, (87), 23 states have return successors, (87), 84 states have call predecessors, (87), 86 states have call successors, (87) [2021-11-23 02:37:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 629 transitions. [2021-11-23 02:37:29,047 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 629 transitions. Word has length 76 [2021-11-23 02:37:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 629 transitions. [2021-11-23 02:37:29,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 30 states have internal predecessors, (38), 15 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-23 02:37:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 629 transitions. [2021-11-23 02:37:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 02:37:29,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:29,051 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:29,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:29,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 02:37:29,259 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1762686401, now seen corresponding path program 1 times [2021-11-23 02:37:29,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:29,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482390971] [2021-11-23 02:37:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:29,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:29,369 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 02:37:29,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:29,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482390971] [2021-11-23 02:37:29,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482390971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:29,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209457352] [2021-11-23 02:37:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:29,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:29,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:29,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03dabaa5-227e-4512-a8ee-5561167d9bac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:37:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:29,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:37:29,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:29,819 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 02:37:29,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:37:30,012 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 02:37:30,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209457352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:37:30,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897110060] [2021-11-23 02:37:30,020 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-23 02:37:30,020 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:37:30,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:37:30,021 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:37:30,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:37:59,370 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:37:59,647 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:37:59,916 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:38:35,621 WARN L227 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 486 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:38:48,113 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 508 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:04,030 WARN L227 SmtUtils]: Spent 15.61s on a formula simplification. DAG size of input: 579 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:27,748 WARN L227 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 580 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:27,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1897110060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:27,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:39:27,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:39:27,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968799055] [2021-11-23 02:39:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:27,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:39:27,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:39:27,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:39:27,931 INFO L87 Difference]: Start difference. First operand 411 states and 629 transitions. Second operand has 25 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 02:39:39,390 WARN L227 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 465 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)