./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product27.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_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/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_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/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_f222664c-01e7-4695-bcb7-a7859ed435c5/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 00530584ceb95509e59a4223c6066e974815f5b40475a70fc9a47cceec3e0b2f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:28:57,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:28:57,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:28:58,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:28:58,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:28:58,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:28:58,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:28:58,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:28:58,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:28:58,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:28:58,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:28:58,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:28:58,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:28:58,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:28:58,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:28:58,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:28:58,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:28:58,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:28:58,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:28:58,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:28:58,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:28:58,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:28:58,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:28:58,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:28:58,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:28:58,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:28:58,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:28:58,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:28:58,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:28:58,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:28:58,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:28:58,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:28:58,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:28:58,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:28:58,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:28:58,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:28:58,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:28:58,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:28:58,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:28:58,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:28:58,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:28:58,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:28:58,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:28:58,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:28:58,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:28:58,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:28:58,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:28:58,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:28:58,164 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:28:58,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:28:58,165 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:28:58,165 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:28:58,165 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:28:58,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:28:58,166 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:28:58,166 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:28:58,167 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:28:58,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:28:58,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:28:58,168 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:28:58,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:28:58,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:28:58,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:28:58,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:28:58,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:28:58,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:28:58,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:28:58,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:28:58,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:28:58,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:28:58,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:28:58,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:28:58,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:28:58,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:28:58,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:28:58,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:28:58,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:28:58,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:28:58,175 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:28:58,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:28:58,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:28:58,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:28:58,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:28:58,176 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_f222664c-01e7-4695-bcb7-a7859ed435c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00530584ceb95509e59a4223c6066e974815f5b40475a70fc9a47cceec3e0b2f [2021-11-23 03:28:58,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:28:58,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:28:58,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:28:58,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:28:58,627 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:28:58,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product27.cil.c [2021-11-23 03:28:58,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/data/11eb4ce5b/342bbe8b44804475bb9552d35a445db3/FLAG36edd6a13 [2021-11-23 03:28:59,483 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:28:59,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c [2021-11-23 03:28:59,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/data/11eb4ce5b/342bbe8b44804475bb9552d35a445db3/FLAG36edd6a13 [2021-11-23 03:28:59,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/data/11eb4ce5b/342bbe8b44804475bb9552d35a445db3 [2021-11-23 03:28:59,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:28:59,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:28:59,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:28:59,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:28:59,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:28:59,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:59" (1/1) ... [2021-11-23 03:28:59,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4334ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:28:59, skipping insertion in model container [2021-11-23 03:28:59,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:28:59" (1/1) ... [2021-11-23 03:28:59,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:28:59,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:29:00,279 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_f222664c-01e7-4695-bcb7-a7859ed435c5/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c[34014,34027] [2021-11-23 03:29:00,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:00,509 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:29:00,607 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_f222664c-01e7-4695-bcb7-a7859ed435c5/sv-benchmarks/c/product-lines/email_spec11_product27.cil.c[34014,34027] [2021-11-23 03:29:00,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:29:00,712 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:29:00,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00 WrapperNode [2021-11-23 03:29:00,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:29:00,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:00,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:29:00,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:29:00,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,848 INFO L137 Inliner]: procedures = 133, calls = 227, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1125 [2021-11-23 03:29:00,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:29:00,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:29:00,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:29:00,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:29:00,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:29:00,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:29:00,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:29:00,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:29:00,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (1/1) ... [2021-11-23 03:29:00,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:29:00,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:01,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:29:01,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:29:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:29:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:29:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:29:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:29:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:29:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:29:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:29:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:29:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:29:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:29:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:29:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:29:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:29:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:29:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:29:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:29:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:29:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:29:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:29:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:29:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:29:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 03:29:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 03:29:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:29:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:29:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:29:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:29:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:29:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:29:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:29:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:29:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:29:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:29:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:29:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:29:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:29:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:29:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:29:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:29:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:29:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:29:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:29:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:29:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:29:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:29:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:29:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:29:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:29:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:29:01,505 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:29:01,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:29:02,675 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:29:03,282 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:29:03,282 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:29:03,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:03 BoogieIcfgContainer [2021-11-23 03:29:03,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:29:03,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:29:03,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:29:03,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:29:03,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:28:59" (1/3) ... [2021-11-23 03:29:03,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a7f5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:03, skipping insertion in model container [2021-11-23 03:29:03,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:00" (2/3) ... [2021-11-23 03:29:03,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a7f5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:03, skipping insertion in model container [2021-11-23 03:29:03,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:03" (3/3) ... [2021-11-23 03:29:03,308 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product27.cil.c [2021-11-23 03:29:03,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:29:03,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:29:03,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:29:03,420 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 03:29:03,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:29:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-11-23 03:29:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:29:03,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:03,468 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:03,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1302163263, now seen corresponding path program 1 times [2021-11-23 03:29:03,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:03,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927973872] [2021-11-23 03:29:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:03,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:03,910 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 03:29:03,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:03,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927973872] [2021-11-23 03:29:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927973872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:03,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:29:03,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301575452] [2021-11-23 03:29:03,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:03,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:29:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:29:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:29:03,963 INFO L87 Difference]: Start difference. First operand has 191 states, 109 states have (on average 1.311926605504587) internal successors, (143), 112 states have internal predecessors, (143), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:04,204 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2021-11-23 03:29:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:29:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2021-11-23 03:29:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:04,232 INFO L225 Difference]: With dead ends: 290 [2021-11-23 03:29:04,233 INFO L226 Difference]: Without dead ends: 188 [2021-11-23 03:29:04,246 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 03:29:04,252 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:04,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-23 03:29:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-23 03:29:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-23 03:29:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2021-11-23 03:29:04,354 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 67 [2021-11-23 03:29:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:04,357 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2021-11-23 03:29:04,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2021-11-23 03:29:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 03:29:04,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:04,365 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:29:04,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:29:04,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1687111893, now seen corresponding path program 1 times [2021-11-23 03:29:04,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:04,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916895557] [2021-11-23 03:29:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:04,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:04,534 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 03:29:04,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:04,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916895557] [2021-11-23 03:29:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916895557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:04,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:04,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:04,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388587647] [2021-11-23 03:29:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:04,541 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:04,767 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2021-11-23 03:29:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 68 [2021-11-23 03:29:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:04,780 INFO L225 Difference]: With dead ends: 286 [2021-11-23 03:29:04,780 INFO L226 Difference]: Without dead ends: 190 [2021-11-23 03:29:04,790 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 03:29:04,794 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:04,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:04,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-23 03:29:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-23 03:29:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 109 states have (on average 1.275229357798165) internal successors, (139), 111 states have internal predecessors, (139), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-23 03:29:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2021-11-23 03:29:04,845 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 68 [2021-11-23 03:29:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:04,846 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2021-11-23 03:29:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2021-11-23 03:29:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 03:29:04,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:04,852 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, 1] [2021-11-23 03:29:04,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:29:04,853 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:04,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1635167115, now seen corresponding path program 1 times [2021-11-23 03:29:04,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:04,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832093857] [2021-11-23 03:29:04,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:04,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:05,073 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 03:29:05,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:05,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832093857] [2021-11-23 03:29:05,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832093857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:29:05,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:29:05,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:29:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617771579] [2021-11-23 03:29:05,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:29:05,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:29:05,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:29:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:29:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:29:05,085 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:29:05,286 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2021-11-23 03:29:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:29:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2021-11-23 03:29:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:29:05,293 INFO L225 Difference]: With dead ends: 415 [2021-11-23 03:29:05,294 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 03:29:05,295 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 03:29:05,306 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 59 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:29:05,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 435 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:29:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 03:29:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2021-11-23 03:29:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 143 states have (on average 1.3566433566433567) internal successors, (194), 145 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 22 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-23 03:29:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2021-11-23 03:29:05,359 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 73 [2021-11-23 03:29:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:29:05,361 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2021-11-23 03:29:05,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:29:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2021-11-23 03:29:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:29:05,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:29:05,372 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, 1, 1] [2021-11-23 03:29:05,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:29:05,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:29:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:29:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1665878613, now seen corresponding path program 1 times [2021-11-23 03:29:05,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:29:05,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101978427] [2021-11-23 03:29:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:05,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:29:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:05,565 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 03:29:05,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:29:05,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101978427] [2021-11-23 03:29:05,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101978427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:29:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590338031] [2021-11-23 03:29:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:29:05,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:29:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:29:05,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:29:05,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:29:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:29:05,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:29:05,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:29:06,232 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 03:29:06,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:29:06,438 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 03:29:06,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590338031] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:29:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963465716] [2021-11-23 03:29:06,466 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2021-11-23 03:29:06,467 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:29:06,473 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:29:06,480 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:29:06,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:29:43,959 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 03:29:44,362 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:29:44,715 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:30:24,776 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 486 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:51,268 WARN L227 SmtUtils]: Spent 14.27s on a formula simplification. DAG size of input: 589 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:16,658 WARN L227 SmtUtils]: Spent 23.63s on a formula simplification. DAG size of input: 591 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:41,993 WARN L227 SmtUtils]: Spent 23.51s on a formula simplification. DAG size of input: 590 DAG size of output: 464 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:07,525 WARN L227 SmtUtils]: Spent 23.56s on a formula simplification. DAG size of input: 588 DAG size of output: 462 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:13,939 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 545 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1963465716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:32:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 03:32:13,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134685932] [2021-11-23 03:32:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:13,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:32:13,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:32:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:32:13,953 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 03:32:27,461 WARN L227 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 561 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:37,506 WARN L227 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 568 DAG size of output: 419 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:47,146 WARN L227 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 559 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:56,454 INFO L93 Difference]: Finished difference Result 527 states and 781 transitions. [2021-11-23 03:32:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 03:32:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 74 [2021-11-23 03:32:56,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:56,459 INFO L225 Difference]: With dead ends: 527 [2021-11-23 03:32:56,459 INFO L226 Difference]: Without dead ends: 307 [2021-11-23 03:32:56,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 181.0s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:32:56,462 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 157 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:56,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 2957 Invalid, 1717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2021-11-23 03:32:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-23 03:32:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 266. [2021-11-23 03:32:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 170 states have (on average 1.3705882352941177) internal successors, (233), 172 states have internal predecessors, (233), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-23 03:32:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 376 transitions. [2021-11-23 03:32:56,583 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 376 transitions. Word has length 74 [2021-11-23 03:32:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:56,584 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 376 transitions. [2021-11-23 03:32:56,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 03:32:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 376 transitions. [2021-11-23 03:32:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 03:32:56,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:56,588 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:56,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:32:56,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:56,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1311921407, now seen corresponding path program 1 times [2021-11-23 03:32:56,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:56,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037858392] [2021-11-23 03:32:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:56,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:56,892 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 03:32:56,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:56,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037858392] [2021-11-23 03:32:56,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037858392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:32:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558782154] [2021-11-23 03:32:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:56,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:56,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:32:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:57,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:32:57,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:57,439 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 03:32:57,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:57,612 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 03:32:57,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558782154] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104738190] [2021-11-23 03:32:57,618 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 03:32:57,618 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:57,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:57,619 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:57,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:33:43,941 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:33:44,256 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 03:33:44,589 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:33:57,182 WARN L227 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:02,890 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:09,176 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:15,112 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:31,898 WARN L227 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 486 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:34:43,504 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 508 DAG size of output: 295 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:02,967 WARN L227 SmtUtils]: Spent 19.15s on a formula simplification. DAG size of input: 579 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:20,195 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 547 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:26,591 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 549 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:37,974 WARN L227 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 580 DAG size of output: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:38,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1104738190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:35:38,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:35:38,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 03:35:38,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225263698] [2021-11-23 03:35:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:35:38,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:35:38,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:35:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:35:38,252 INFO L87 Difference]: Start difference. First operand 266 states and 376 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 03:35:58,365 WARN L227 SmtUtils]: Spent 18.51s on a formula simplification. DAG size of input: 541 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:23,790 WARN L227 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 566 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:32,276 INFO L93 Difference]: Finished difference Result 570 states and 839 transitions. [2021-11-23 03:36:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:36:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 80 [2021-11-23 03:36:32,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:32,281 INFO L225 Difference]: With dead ends: 570 [2021-11-23 03:36:32,281 INFO L226 Difference]: Without dead ends: 350 [2021-11-23 03:36:32,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 159.3s TimeCoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:36:32,285 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 172 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:32,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 3086 Invalid, 2009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-23 03:36:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-23 03:36:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 280. [2021-11-23 03:36:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.3736263736263736) internal successors, (250), 184 states have internal predecessors, (250), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 03:36:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 395 transitions. [2021-11-23 03:36:32,397 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 395 transitions. Word has length 80 [2021-11-23 03:36:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:32,398 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 395 transitions. [2021-11-23 03:36:32,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 03:36:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 395 transitions. [2021-11-23 03:36:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 03:36:32,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:32,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:32,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:32,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:32,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1657192171, now seen corresponding path program 1 times [2021-11-23 03:36:32,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:32,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334577183] [2021-11-23 03:36:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:32,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:32,767 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 03:36:32,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334577183] [2021-11-23 03:36:32,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334577183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:36:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849796254] [2021-11-23 03:36:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:32,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:32,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:32,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:36:32,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:36:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:36:33,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:33,310 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 03:36:33,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:33,501 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 03:36:33,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849796254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:36:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1372726534] [2021-11-23 03:36:33,511 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-23 03:36:33,511 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:36:33,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:36:33,512 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:36:33,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:37:16,210 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:37:16,470 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 03:37:16,537 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 452 for LOIs [2021-11-23 03:37:16,881 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 449 for LOIs [2021-11-23 03:37:17,250 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:37:17,573 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:37:29,747 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:59,042 WARN L227 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 486 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:27,628 WARN L227 SmtUtils]: Spent 17.34s on a formula simplification. DAG size of input: 619 DAG size of output: 502 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:38:58,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1372726534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:58,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:38:58,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 03:38:58,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007250161] [2021-11-23 03:38:58,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 03:38:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 03:38:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 03:38:58,223 INFO L87 Difference]: Start difference. First operand 280 states and 395 transitions. Second operand has 30 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 03:39:06,356 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 594 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:39:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:39:16,226 INFO L93 Difference]: Finished difference Result 592 states and 871 transitions. [2021-11-23 03:39:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:39:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 83 [2021-11-23 03:39:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:39:16,230 INFO L225 Difference]: With dead ends: 592 [2021-11-23 03:39:16,230 INFO L226 Difference]: Without dead ends: 372 [2021-11-23 03:39:16,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 110.0s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 03:39:16,232 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 129 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 2973 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:39:16,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 3729 Invalid, 2989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 2973 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2021-11-23 03:39:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-23 03:39:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 316. [2021-11-23 03:39:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 212 states have (on average 1.3773584905660377) internal successors, (292), 214 states have internal predecessors, (292), 76 states have call successors, (76), 27 states have call predecessors, (76), 27 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-23 03:39:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 443 transitions. [2021-11-23 03:39:16,367 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 443 transitions. Word has length 83 [2021-11-23 03:39:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:39:16,368 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 443 transitions. [2021-11-23 03:39:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 18 states have internal predecessors, (41), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 03:39:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 443 transitions. [2021-11-23 03:39:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 03:39:16,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:39:16,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:39:16,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:39:16,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 03:39:16,584 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:39:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:39:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash 316820286, now seen corresponding path program 1 times [2021-11-23 03:39:16,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:39:16,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985191450] [2021-11-23 03:39:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:16,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:39:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:16,695 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 03:39:16,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:39:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985191450] [2021-11-23 03:39:16,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985191450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:39:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037446153] [2021-11-23 03:39:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:39:16,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:39:16,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:39:16,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:39:16,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f222664c-01e7-4695-bcb7-a7859ed435c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:39:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:39:16,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:39:16,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:39:17,099 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 03:39:17,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:39:17,249 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 03:39:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037446153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:39:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749797809] [2021-11-23 03:39:17,257 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2021-11-23 03:39:17,257 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:39:17,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:39:17,260 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:39:17,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:39:56,575 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:39:56,846 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:39:57,100 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2021-11-23 03:39:58,764 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 03:39:58,807 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2021-11-23 03:40:01,857 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2021-11-23 03:40:04,888 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-23 03:40:04,928 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2021-11-23 03:40:04,977 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2021-11-23 03:40:06,633 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 242 for LOIs [2021-11-23 03:40:06,686 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:40:22,749 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 468 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)