./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product24.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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/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 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:37:51,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:37:51,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:37:51,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:37:51,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:37:51,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:37:51,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:37:51,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:37:51,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:37:51,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:37:51,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:37:51,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:37:51,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:37:51,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:37:51,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:37:51,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:37:51,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:37:51,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:37:51,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:37:51,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:37:51,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:37:51,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:37:51,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:37:51,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:37:51,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:37:51,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:37:51,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:37:51,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:37:51,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:37:51,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:37:51,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:37:51,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:37:51,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:37:51,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:37:51,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:37:51,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:37:51,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:37:51,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:37:51,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:37:51,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:37:51,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:37:51,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:37:51,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:37:51,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:37:51,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:37:51,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:37:51,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:37:51,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:37:51,815 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:37:51,815 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:37:51,816 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:37:51,816 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:37:51,817 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:37:51,817 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:37:51,817 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:37:51,818 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:37:51,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:37:51,818 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:37:51,818 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:37:51,819 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:37:51,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:37:51,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:37:51,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:37:51,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:37:51,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:37:51,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:37:51,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:37:51,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:37:51,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:37:51,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:37:51,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:37:51,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:37:51,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:37:51,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:37:51,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:51,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:37:51,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:37:51,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:37:51,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:37:51,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:37:51,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:37:51,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:37:51,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:37:51,825 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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51fa488e776e831bac86701b44da2398387b953b2cee791cda39a1547c039fcd [2021-11-23 03:37:52,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:37:52,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:37:52,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:37:52,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:37:52,135 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:37:52,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2021-11-23 03:37:52,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/data/7bea5c235/a52adb144ac2498a8a35e0990cb5bdb3/FLAG224a37d1e [2021-11-23 03:37:52,820 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:37:52,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c [2021-11-23 03:37:52,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/data/7bea5c235/a52adb144ac2498a8a35e0990cb5bdb3/FLAG224a37d1e [2021-11-23 03:37:53,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/data/7bea5c235/a52adb144ac2498a8a35e0990cb5bdb3 [2021-11-23 03:37:53,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:37:53,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:37:53,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:53,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:37:53,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:37:53,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:53,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5efe6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53, skipping insertion in model container [2021-11-23 03:37:53,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:53,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:37:53,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:37:53,593 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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c[16887,16900] [2021-11-23 03:37:53,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:53,802 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:37:53,857 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_73906f38-25e2-4ee4-9fb1-7ed082de7a60/sv-benchmarks/c/product-lines/email_spec11_product24.cil.c[16887,16900] [2021-11-23 03:37:53,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:53,950 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:37:53,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53 WrapperNode [2021-11-23 03:37:53,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:53,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:53,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:37:53,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:37:53,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:53,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,083 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1049 [2021-11-23 03:37:54,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:54,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:37:54,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:37:54,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:37:54,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:37:54,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:37:54,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:37:54,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:37:54,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (1/1) ... [2021-11-23 03:37:54,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:54,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:54,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:37:54,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:37:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:37:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:37:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:37:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:37:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:37:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:37:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:37:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:37:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:37:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:37:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:37:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:37:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:37:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:37:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:37:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:37:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:37:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:37:54,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:37:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:37:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:37:54,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:37:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:37:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:37:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:37:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:37:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:37:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:37:54,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:37:54,554 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:37:54,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:37:55,343 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:37:55,804 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:37:55,804 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:37:55,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:55 BoogieIcfgContainer [2021-11-23 03:37:55,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:37:55,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:37:55,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:37:55,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:37:55,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:37:53" (1/3) ... [2021-11-23 03:37:55,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8cd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:55, skipping insertion in model container [2021-11-23 03:37:55,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:53" (2/3) ... [2021-11-23 03:37:55,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8cd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:55, skipping insertion in model container [2021-11-23 03:37:55,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:55" (3/3) ... [2021-11-23 03:37:55,816 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product24.cil.c [2021-11-23 03:37:55,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:37:55,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:37:55,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:37:55,920 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 03:37:55,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:37:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-23 03:37:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:37:55,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:55,962 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:37:55,963 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:55,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1242711693, now seen corresponding path program 1 times [2021-11-23 03:37:55,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:55,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408078697] [2021-11-23 03:37:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:55,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:56,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:56,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408078697] [2021-11-23 03:37:56,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408078697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:56,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:56,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:37:56,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268970535] [2021-11-23 03:37:56,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:56,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:37:56,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:37:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:37:56,427 INFO L87 Difference]: Start difference. First operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:56,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:56,596 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2021-11-23 03:37:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:37:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2021-11-23 03:37:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:56,614 INFO L225 Difference]: With dead ends: 239 [2021-11-23 03:37:56,614 INFO L226 Difference]: Without dead ends: 158 [2021-11-23 03:37:56,620 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 03:37:56,625 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:56,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:37:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-23 03:37:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-23 03:37:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-23 03:37:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2021-11-23 03:37:56,717 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 60 [2021-11-23 03:37:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:56,720 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2021-11-23 03:37:56,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2021-11-23 03:37:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 03:37:56,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:56,734 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:37:56,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:37:56,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash -720978825, now seen corresponding path program 1 times [2021-11-23 03:37:56,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657430802] [2021-11-23 03:37:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:56,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:56,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657430802] [2021-11-23 03:37:56,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657430802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:56,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:56,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:56,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139957004] [2021-11-23 03:37:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:56,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:56,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:56,924 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:57,088 INFO L93 Difference]: Finished difference Result 235 states and 308 transitions. [2021-11-23 03:37:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 03:37:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:57,097 INFO L225 Difference]: With dead ends: 235 [2021-11-23 03:37:57,097 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 03:37:57,106 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 03:37:57,107 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:57,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:37:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 03:37:57,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-23 03:37:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-23 03:37:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 216 transitions. [2021-11-23 03:37:57,142 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 216 transitions. Word has length 61 [2021-11-23 03:37:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:57,144 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 216 transitions. [2021-11-23 03:37:57,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 216 transitions. [2021-11-23 03:37:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 03:37:57,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:57,152 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:57,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:37:57,152 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1393388340, now seen corresponding path program 1 times [2021-11-23 03:37:57,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:57,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397536832] [2021-11-23 03:37:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:57,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:57,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:57,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397536832] [2021-11-23 03:37:57,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397536832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:57,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:57,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482700213] [2021-11-23 03:37:57,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:57,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:57,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:57,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:57,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:57,288 INFO L87 Difference]: Start difference. First operand 160 states and 216 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:57,404 INFO L93 Difference]: Finished difference Result 350 states and 491 transitions. [2021-11-23 03:37:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:57,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-23 03:37:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:57,412 INFO L225 Difference]: With dead ends: 350 [2021-11-23 03:37:57,412 INFO L226 Difference]: Without dead ends: 208 [2021-11-23 03:37:57,413 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 03:37:57,420 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 57 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:57,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 376 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:37:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-23 03:37:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2021-11-23 03:37:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-23 03:37:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2021-11-23 03:37:57,455 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 66 [2021-11-23 03:37:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:57,457 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2021-11-23 03:37:57,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 03:37:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2021-11-23 03:37:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:37:57,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:57,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:57,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:37:57,462 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1891110327, now seen corresponding path program 1 times [2021-11-23 03:37:57,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:57,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328016788] [2021-11-23 03:37:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:57,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:57,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:57,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328016788] [2021-11-23 03:37:57,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328016788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:37:57,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562729341] [2021-11-23 03:37:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:57,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:37:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:57,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:37:57,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:37:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:57,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:37:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:58,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:37:58,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562729341] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:37:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1569186905] [2021-11-23 03:37:58,310 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2021-11-23 03:37:58,310 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:37:58,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:37:58,320 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:37:58,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:38:44,572 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:38:44,851 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:38:45,098 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 465 for LOIs [2021-11-23 03:38:47,205 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 03:38:47,270 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2021-11-23 03:38:57,374 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-23 03:38:57,412 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2021-11-23 03:38:57,457 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2021-11-23 03:38:58,017 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:39:57,140 WARN L227 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 567 DAG size of output: 432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:40:04,939 WARN L227 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 571 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:40:45,666 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 579 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:40:53,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1569186905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:40:53,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:40:53,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2021-11-23 03:40:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632610453] [2021-11-23 03:40:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:40:53,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 03:40:53,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:40:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 03:40:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 03:40:53,384 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 43 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 03:41:06,087 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 553 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:11,662 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 558 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:17,255 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 549 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:23,264 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 551 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:29,627 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 554 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:41:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:41:42,290 INFO L93 Difference]: Finished difference Result 591 states and 927 transitions. [2021-11-23 03:41:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-23 03:41:42,291 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2021-11-23 03:41:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:41:42,296 INFO L225 Difference]: With dead ends: 591 [2021-11-23 03:41:42,296 INFO L226 Difference]: Without dead ends: 406 [2021-11-23 03:41:42,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 147.7s TimeCoverageRelationStatistics Valid=192, Invalid=2888, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 03:41:42,300 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 350 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 6035 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:41:42,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 4979 Invalid, 6073 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [38 Valid, 6035 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2021-11-23 03:41:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-23 03:41:42,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 303. [2021-11-23 03:41:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 213 states have (on average 1.4553990610328638) internal successors, (310), 215 states have internal predecessors, (310), 66 states have call successors, (66), 24 states have call predecessors, (66), 23 states have return successors, (66), 63 states have call predecessors, (66), 65 states have call successors, (66) [2021-11-23 03:41:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 442 transitions. [2021-11-23 03:41:42,417 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 442 transitions. Word has length 67 [2021-11-23 03:41:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:41:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 442 transitions. [2021-11-23 03:41:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 26 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 03:41:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 442 transitions. [2021-11-23 03:41:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 03:41:42,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:41:42,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:41:42,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:41:42,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 03:41:42,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:41:42,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:41:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash -191795993, now seen corresponding path program 1 times [2021-11-23 03:41:42,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:41:42,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47420045] [2021-11-23 03:41:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:42,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:41:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:41:42,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:41:42,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47420045] [2021-11-23 03:41:42,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47420045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:41:42,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080599231] [2021-11-23 03:41:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:41:42,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:41:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:41:42,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:41:42,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:41:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:41:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:41:43,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:41:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:41:43,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:41:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:41:43,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080599231] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:41:43,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585781378] [2021-11-23 03:41:43,267 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-23 03:41:43,267 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:41:43,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:41:43,268 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:41:43,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:42:13,423 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:42:13,674 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:42:14,019 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 465 for LOIs [2021-11-23 03:42:15,636 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 03:42:15,677 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2021-11-23 03:42:41,551 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 440 for LOIs [2021-11-23 03:42:41,988 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2021-11-23 03:42:42,033 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2021-11-23 03:42:42,559 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2021-11-23 03:42:42,604 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:43:39,400 WARN L227 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 567 DAG size of output: 432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:43:47,289 WARN L227 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 571 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:44:31,382 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 579 DAG size of output: 409 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:44:39,070 WARN L227 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 440 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:44:46,941 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 446 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:05,177 WARN L227 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 609 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:17,397 WARN L227 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 607 DAG size of output: 423 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:25,688 WARN L227 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 671 DAG size of output: 466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:34,443 WARN L227 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 693 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:40,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [585781378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:40,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:45:40,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2021-11-23 03:45:40,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482642703] [2021-11-23 03:45:40,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:40,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-23 03:45:40,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-23 03:45:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3008, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:45:40,111 INFO L87 Difference]: Start difference. First operand 303 states and 442 transitions. Second operand has 52 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:45:52,874 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 553 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:45:58,482 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 558 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:04,122 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 549 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:10,138 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 551 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:16,436 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 554 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:33,085 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 601 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:40,279 WARN L227 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 601 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:46:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:44,907 INFO L93 Difference]: Finished difference Result 426 states and 639 transitions. [2021-11-23 03:46:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-23 03:46:44,907 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 72 [2021-11-23 03:46:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:44,912 INFO L225 Difference]: With dead ends: 426 [2021-11-23 03:46:44,912 INFO L226 Difference]: Without dead ends: 424 [2021-11-23 03:46:44,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 223.7s TimeCoverageRelationStatistics Valid=271, Invalid=4151, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 03:46:44,914 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 405 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 7040 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 5345 SdHoareTripleChecker+Invalid, 7071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:44,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 5345 Invalid, 7071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 7040 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2021-11-23 03:46:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-23 03:46:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 312. [2021-11-23 03:46:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 219 states have (on average 1.447488584474886) internal successors, (317), 221 states have internal predecessors, (317), 67 states have call successors, (67), 26 states have call predecessors, (67), 25 states have return successors, (67), 64 states have call predecessors, (67), 66 states have call successors, (67) [2021-11-23 03:46:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 451 transitions. [2021-11-23 03:46:45,030 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 451 transitions. Word has length 72 [2021-11-23 03:46:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:45,031 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 451 transitions. [2021-11-23 03:46:45,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 32 states have internal predecessors, (37), 15 states have call successors, (15), 9 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 03:46:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 451 transitions. [2021-11-23 03:46:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 03:46:45,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:45,034 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:45,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:46:45,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:45,251 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -853274321, now seen corresponding path program 1 times [2021-11-23 03:46:45,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:45,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200258993] [2021-11-23 03:46:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:45,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:46:45,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:45,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200258993] [2021-11-23 03:46:45,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200258993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:45,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:45,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:46:45,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029820668] [2021-11-23 03:46:45,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:45,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:46:45,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:45,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:46:45,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:46:45,358 INFO L87 Difference]: Start difference. First operand 312 states and 451 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 03:46:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:45,638 INFO L93 Difference]: Finished difference Result 697 states and 1036 transitions. [2021-11-23 03:46:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:46:45,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 72 [2021-11-23 03:46:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:45,642 INFO L225 Difference]: With dead ends: 697 [2021-11-23 03:46:45,643 INFO L226 Difference]: Without dead ends: 427 [2021-11-23 03:46:45,644 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 03:46:45,645 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 55 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:45,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 394 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:46:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-23 03:46:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2021-11-23 03:46:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 302 states have (on average 1.4801324503311257) internal successors, (447), 304 states have internal predecessors, (447), 92 states have call successors, (92), 26 states have call predecessors, (92), 25 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2021-11-23 03:46:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 631 transitions. [2021-11-23 03:46:45,857 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 631 transitions. Word has length 72 [2021-11-23 03:46:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:45,858 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 631 transitions. [2021-11-23 03:46:45,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 03:46:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 631 transitions. [2021-11-23 03:46:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:46:45,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:45,862 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:45,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:46:45,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1853148361, now seen corresponding path program 1 times [2021-11-23 03:46:45,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556119741] [2021-11-23 03:46:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:45,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:46:45,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556119741] [2021-11-23 03:46:45,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556119741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:46:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838126226] [2021-11-23 03:46:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:45,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:45,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:46:45,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73906f38-25e2-4ee4-9fb1-7ed082de7a60/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:46:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:46,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:46:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:46:46,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:46:46,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838126226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:46:46,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1943610842] [2021-11-23 03:46:46,509 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-11-23 03:46:46,509 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:46:46,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:46:46,510 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:46:46,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:47:24,583 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:47:24,827 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 03:47:25,082 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:22,910 WARN L227 SmtUtils]: Spent 14.11s on a formula simplification. DAG size of input: 593 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:38,139 WARN L227 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 578 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:46,470 WARN L227 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 580 DAG size of output: 321 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:48:54,826 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 578 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:49:01,180 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 551 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:49:07,625 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 553 DAG size of output: 400 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:49:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1943610842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:49:13,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:49:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 03:49:13,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997296226] [2021-11-23 03:49:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:49:13,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:49:13,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:49:13,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:49:13,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:49:13,112 INFO L87 Difference]: Start difference. First operand 420 states and 631 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-23 03:49:19,224 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 338 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)