./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7 --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 ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:26:05,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:26:05,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:26:06,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:26:06,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:26:06,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:26:06,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:26:06,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:26:06,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:26:06,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:26:06,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:26:06,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:26:06,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:26:06,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:26:06,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:26:06,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:26:06,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:26:06,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:26:06,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:26:06,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:26:06,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:26:06,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:26:06,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:26:06,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:26:06,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:26:06,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:26:06,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:26:06,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:26:06,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:26:06,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:26:06,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:26:06,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:26:06,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:26:06,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:26:06,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:26:06,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:26:06,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:26:06,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:26:06,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:26:06,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:26:06,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:26:06,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:26:06,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:26:06,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:26:06,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:26:06,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:26:06,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:26:06,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:26:06,106 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:26:06,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:26:06,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:26:06,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:26:06,107 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:26:06,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:26:06,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:26:06,108 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:26:06,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:26:06,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:26:06,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:26:06,109 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:26:06,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:26:06,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:26:06,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:26:06,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:26:06,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:26:06,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:26:06,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:26:06,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:26:06,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:26:06,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:26:06,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:26:06,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:26:06,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:26:06,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:26:06,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:06,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:26:06,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:26:06,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:26:06,114 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:26:06,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:26:06,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:26:06,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:26:06,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:26:06,115 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_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c [2021-11-25 19:26:06,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:26:06,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:26:06,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:26:06,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:26:06,426 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:26:06,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2021-11-25 19:26:06,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/data/e62d286ac/d34aad46e8574cb89934068fe6cff58f/FLAG651111a92 [2021-11-25 19:26:07,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:26:07,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2021-11-25 19:26:07,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/data/e62d286ac/d34aad46e8574cb89934068fe6cff58f/FLAG651111a92 [2021-11-25 19:26:07,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/data/e62d286ac/d34aad46e8574cb89934068fe6cff58f [2021-11-25 19:26:07,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:26:07,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:26:07,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:07,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:26:07,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:26:07,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:07" (1/1) ... [2021-11-25 19:26:07,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4564d805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:07, skipping insertion in model container [2021-11-25 19:26:07,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:07" (1/1) ... [2021-11-25 19:26:07,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:26:07,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:26:07,846 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_fb18debd-f296-44c2-bd8d-ee6b54ac5138/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2021-11-25 19:26:08,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:08,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:26:08,219 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_fb18debd-f296-44c2-bd8d-ee6b54ac5138/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2021-11-25 19:26:08,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:08,377 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:26:08,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08 WrapperNode [2021-11-25 19:26:08,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:08,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:08,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:26:08,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:26:08,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,531 INFO L137 Inliner]: procedures = 133, calls = 225, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1120 [2021-11-25 19:26:08,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:08,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:26:08,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:26:08,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:26:08,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:26:08,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:26:08,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:26:08,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:26:08,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (1/1) ... [2021-11-25 19:26:08,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:08,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:26:08,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:26:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 19:26:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 19:26:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 19:26:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 19:26:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 19:26:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 19:26:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-25 19:26:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-25 19:26:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 19:26:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 19:26:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 19:26:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 19:26:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 19:26:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 19:26:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 19:26:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 19:26:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 19:26:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 19:26:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 19:26:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 19:26:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 19:26:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 19:26:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 19:26:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 19:26:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 19:26:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:26:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 19:26:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 19:26:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 19:26:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 19:26:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 19:26:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 19:26:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 19:26:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 19:26:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 19:26:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 19:26:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 19:26:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 19:26:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 19:26:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 19:26:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 19:26:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 19:26:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:26:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 19:26:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 19:26:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 19:26:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 19:26:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:26:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:26:08,995 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:26:08,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:26:10,006 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:26:10,491 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:26:10,491 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:26:10,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:10 BoogieIcfgContainer [2021-11-25 19:26:10,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:26:10,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:26:10,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:26:10,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:26:10,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:26:07" (1/3) ... [2021-11-25 19:26:10,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a8501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:10, skipping insertion in model container [2021-11-25 19:26:10,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:08" (2/3) ... [2021-11-25 19:26:10,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a8501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:10, skipping insertion in model container [2021-11-25 19:26:10,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:10" (3/3) ... [2021-11-25 19:26:10,506 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product27.cil.c [2021-11-25 19:26:10,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:26:10,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:26:10,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:26:10,595 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:26:10,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:26:10,635 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) [2021-11-25 19:26:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 19:26:10,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:10,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:10,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1431102340, now seen corresponding path program 1 times [2021-11-25 19:26:10,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:10,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045231807] [2021-11-25 19:26:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:10,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:11,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:11,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045231807] [2021-11-25 19:26:11,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045231807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:11,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:11,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:11,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611557094] [2021-11-25 19:26:11,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:11,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:26:11,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:26:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:26:11,096 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:11,292 INFO L93 Difference]: Finished difference Result 290 states and 389 transitions. [2021-11-25 19:26:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:26:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 60 [2021-11-25 19:26:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:11,314 INFO L225 Difference]: With dead ends: 290 [2021-11-25 19:26:11,314 INFO L226 Difference]: Without dead ends: 188 [2021-11-25 19:26:11,323 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 [2021-11-25 19:26:11,328 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 [2021-11-25 19:26:11,329 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] [2021-11-25 19:26:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-25 19:26:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-25 19:26:11,396 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) [2021-11-25 19:26:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 252 transitions. [2021-11-25 19:26:11,401 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 252 transitions. Word has length 60 [2021-11-25 19:26:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:11,403 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 252 transitions. [2021-11-25 19:26:11,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 252 transitions. [2021-11-25 19:26:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 19:26:11,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:11,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:11,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:26:11,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1261232434, now seen corresponding path program 1 times [2021-11-25 19:26:11,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397751469] [2021-11-25 19:26:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:11,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:11,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:11,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397751469] [2021-11-25 19:26:11,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397751469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:11,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:11,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:11,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932706345] [2021-11-25 19:26:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:11,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:11,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:11,538 INFO L87 Difference]: Start difference. First operand 188 states and 252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:11,695 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2021-11-25 19:26:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-25 19:26:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:11,704 INFO L225 Difference]: With dead ends: 286 [2021-11-25 19:26:11,704 INFO L226 Difference]: Without dead ends: 190 [2021-11-25 19:26:11,710 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 [2021-11-25 19:26:11,712 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 [2021-11-25 19:26:11,713 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] [2021-11-25 19:26:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-25 19:26:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-25 19:26:11,741 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) [2021-11-25 19:26:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2021-11-25 19:26:11,745 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 61 [2021-11-25 19:26:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:11,747 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2021-11-25 19:26:11,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2021-11-25 19:26:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 19:26:11,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:11,757 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] [2021-11-25 19:26:11,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:26:11,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:11,758 INFO L85 PathProgramCache]: Analyzing trace with hash -433821520, now seen corresponding path program 1 times [2021-11-25 19:26:11,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:11,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312960112] [2021-11-25 19:26:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:11,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:11,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:11,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312960112] [2021-11-25 19:26:11,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312960112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:11,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:11,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114073297] [2021-11-25 19:26:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:11,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:11,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:11,911 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:12,057 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2021-11-25 19:26:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2021-11-25 19:26:12,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:12,061 INFO L225 Difference]: With dead ends: 415 [2021-11-25 19:26:12,061 INFO L226 Difference]: Without dead ends: 243 [2021-11-25 19:26:12,062 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 [2021-11-25 19:26:12,069 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 [2021-11-25 19:26:12,071 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] [2021-11-25 19:26:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-25 19:26:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2021-11-25 19:26:12,108 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) [2021-11-25 19:26:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 337 transitions. [2021-11-25 19:26:12,112 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 337 transitions. Word has length 66 [2021-11-25 19:26:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:12,130 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 337 transitions. [2021-11-25 19:26:12,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 19:26:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 337 transitions. [2021-11-25 19:26:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:26:12,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:12,133 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] [2021-11-25 19:26:12,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:26:12,134 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:12,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash 132415004, now seen corresponding path program 1 times [2021-11-25 19:26:12,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:12,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977231730] [2021-11-25 19:26:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:12,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:12,238 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977231730] [2021-11-25 19:26:12,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977231730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:12,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997682316] [2021-11-25 19:26:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:12,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:12,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:12,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:12,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:26:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:12,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:26:12,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:12,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:12,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997682316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1543655758] [2021-11-25 19:26:12,938 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2021-11-25 19:26:12,938 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:12,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:12,949 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:12,951 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:41,930 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-25 19:26:42,233 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-25 19:26:42,486 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 464 for LOIs [2021-11-25 19:26:44,574 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2021-11-25 19:26:44,647 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2021-11-25 19:26:47,879 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 268 for LOIs [2021-11-25 19:26:52,490 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 434 for LOIs [2021-11-25 19:26:52,692 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2021-11-25 19:26:52,744 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2021-11-25 19:26:54,259 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 241 for LOIs [2021-11-25 19:26:54,321 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:44,926 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 565 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:27:50,417 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 567 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:27:56,207 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 567 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:28:01,937 WARN L227 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 565 DAG size of output: 372 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:28:07,654 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 563 DAG size of output: 365 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:28:30,664 WARN L227 SmtUtils]: Spent 11.62s on a formula simplification. DAG size of input: 476 DAG size of output: 367 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:03,384 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 497 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:09,682 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 519 DAG size of output: 413 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:24,342 WARN L227 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 545 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:29,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1543655758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:29,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:29:29,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2021-11-25 19:29:29,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006986671] [2021-11-25 19:29:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:29,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-25 19:29:29,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-25 19:29:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 19:29:29,174 INFO L87 Difference]: Start difference. First operand 238 states and 337 transitions. Second operand has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:30:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:11,448 INFO L93 Difference]: Finished difference Result 636 states and 969 transitions. [2021-11-25 19:30:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-25 19:30:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2021-11-25 19:30:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:11,453 INFO L225 Difference]: With dead ends: 636 [2021-11-25 19:30:11,453 INFO L226 Difference]: Without dead ends: 416 [2021-11-25 19:30:11,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 177.5s TimeCoverageRelationStatistics Valid=202, Invalid=3580, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 19:30:11,456 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 286 mSDsluCounter, 5642 mSDsCounter, 0 mSdLazyCounter, 7188 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 5742 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 7188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:11,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 5742 Invalid, 7240 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 7188 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2021-11-25 19:30:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-25 19:30:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 310. [2021-11-25 19:30:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 196 states have (on average 1.3520408163265305) internal successors, (265), 199 states have internal predecessors, (265), 84 states have call successors, (84), 31 states have call predecessors, (84), 29 states have return successors, (84), 79 states have call predecessors, (84), 83 states have call successors, (84) [2021-11-25 19:30:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 433 transitions. [2021-11-25 19:30:11,561 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 433 transitions. Word has length 67 [2021-11-25 19:30:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:11,562 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 433 transitions. [2021-11-25 19:30:11,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 32 states have (on average 1.0625) internal successors, (34), 29 states have internal predecessors, (34), 15 states have call successors, (15), 10 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-25 19:30:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 433 transitions. [2021-11-25 19:30:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 19:30:11,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:11,565 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2021-11-25 19:30:11,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:30:11,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:11,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:30:11,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 58796477, now seen corresponding path program 1 times [2021-11-25 19:30:11,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:11,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617823598] [2021-11-25 19:30:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:11,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:30:11,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617823598] [2021-11-25 19:30:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617823598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:30:11,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:30:11,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:30:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16253779] [2021-11-25 19:30:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:30:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:30:11,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:30:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:30:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:30:11,879 INFO L87 Difference]: Start difference. First operand 310 states and 433 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (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) [2021-11-25 19:30:12,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:12,097 INFO L93 Difference]: Finished difference Result 722 states and 1046 transitions. [2021-11-25 19:30:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:30:12,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (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 72 [2021-11-25 19:30:12,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:12,101 INFO L225 Difference]: With dead ends: 722 [2021-11-25 19:30:12,102 INFO L226 Difference]: Without dead ends: 438 [2021-11-25 19:30:12,103 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 [2021-11-25 19:30:12,104 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 57 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 450 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 [2021-11-25 19:30:12,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 450 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:30:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-25 19:30:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 431. [2021-11-25 19:30:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 286 states have (on average 1.416083916083916) internal successors, (405), 289 states have internal predecessors, (405), 115 states have call successors, (115), 31 states have call predecessors, (115), 29 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2021-11-25 19:30:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 635 transitions. [2021-11-25 19:30:12,233 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 635 transitions. Word has length 72 [2021-11-25 19:30:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:12,233 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 635 transitions. [2021-11-25 19:30:12,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (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) [2021-11-25 19:30:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 635 transitions. [2021-11-25 19:30:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 19:30:12,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:12,237 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1] [2021-11-25 19:30:12,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:30:12,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:30:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 914473862, now seen corresponding path program 1 times [2021-11-25 19:30:12,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:12,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143793738] [2021-11-25 19:30:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:12,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:30:12,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:12,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143793738] [2021-11-25 19:30:12,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143793738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:30:12,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224869108] [2021-11-25 19:30:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:12,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:12,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:30:12,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:30:12,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:30:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:12,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:30:12,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:30:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:30:12,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:30:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:30:12,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224869108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:30:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [194053101] [2021-11-25 19:30:12,794 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2021-11-25 19:30:12,794 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:30:12,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:30:12,795 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:30:12,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:30:48,649 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-25 19:30:48,902 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-25 19:30:49,187 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:31:50,744 WARN L227 SmtUtils]: Spent 15.12s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:32:08,970 WARN L227 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 581 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:32:20,277 WARN L227 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 584 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:32:20,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [194053101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:20,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:32:20,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-25 19:32:20,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775769565] [2021-11-25 19:32:20,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:20,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 19:32:20,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 19:32:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:32:20,470 INFO L87 Difference]: Start difference. First operand 431 states and 635 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-25 19:32:31,977 WARN L227 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 540 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:32:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:48,457 INFO L93 Difference]: Finished difference Result 836 states and 1271 transitions. [2021-11-25 19:32:48,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 19:32:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 73 [2021-11-25 19:32:48,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:48,462 INFO L225 Difference]: With dead ends: 836 [2021-11-25 19:32:48,462 INFO L226 Difference]: Without dead ends: 516 [2021-11-25 19:32:48,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 113.3s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 19:32:48,465 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 243 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:48,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 3020 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 19:32:48,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-25 19:32:48,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 461. [2021-11-25 19:32:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 314 states have (on average 1.4203821656050954) internal successors, (446), 317 states have internal predecessors, (446), 116 states have call successors, (116), 32 states have call predecessors, (116), 30 states have return successors, (116), 111 states have call predecessors, (116), 115 states have call successors, (116) [2021-11-25 19:32:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 678 transitions. [2021-11-25 19:32:48,649 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 678 transitions. Word has length 73 [2021-11-25 19:32:48,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:48,649 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 678 transitions. [2021-11-25 19:32:48,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-25 19:32:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 678 transitions. [2021-11-25 19:32:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:32:48,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:48,652 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:32:48,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 19:32:48,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:32:48,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:32:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash -31197085, now seen corresponding path program 1 times [2021-11-25 19:32:48,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:48,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810075187] [2021-11-25 19:32:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:48,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:32:48,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:48,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810075187] [2021-11-25 19:32:48,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810075187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:32:48,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531387547] [2021-11-25 19:32:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:48,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:32:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:32:48,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:32:48,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:32:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:49,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:32:49,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:32:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:32:49,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:32:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:32:49,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531387547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:32:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1434715781] [2021-11-25 19:32:49,517 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-25 19:32:49,517 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:32:49,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:32:49,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:32:49,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:34:22,411 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-25 19:34:22,666 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2021-11-25 19:34:22,933 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2021-11-25 19:34:23,226 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 447 for LOIs [2021-11-25 19:34:23,349 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-25 19:34:23,601 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:35:48,017 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 545 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:36:01,716 WARN L227 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 526 DAG size of output: 401 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:36:01,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1434715781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:01,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:36:01,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-25 19:36:01,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299858492] [2021-11-25 19:36:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:01,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-25 19:36:01,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-25 19:36:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2021-11-25 19:36:01,721 INFO L87 Difference]: Start difference. First operand 461 states and 678 transitions. Second operand has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:36:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:17,860 INFO L93 Difference]: Finished difference Result 882 states and 1340 transitions. [2021-11-25 19:36:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 19:36:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 76 [2021-11-25 19:36:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:17,865 INFO L225 Difference]: With dead ends: 882 [2021-11-25 19:36:17,865 INFO L226 Difference]: Without dead ends: 562 [2021-11-25 19:36:17,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:36:17,867 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 131 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:17,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 3627 Invalid, 3100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 19:36:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-25 19:36:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 499. [2021-11-25 19:36:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 346 states have (on average 1.4190751445086704) internal successors, (491), 349 states have internal predecessors, (491), 119 states have call successors, (119), 35 states have call predecessors, (119), 33 states have return successors, (119), 114 states have call predecessors, (119), 118 states have call successors, (119) [2021-11-25 19:36:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 729 transitions. [2021-11-25 19:36:18,053 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 729 transitions. Word has length 76 [2021-11-25 19:36:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:18,054 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 729 transitions. [2021-11-25 19:36:18,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2021-11-25 19:36:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 729 transitions. [2021-11-25 19:36:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 19:36:18,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:18,057 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:18,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:18,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 19:36:18,282 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:36:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1755576858, now seen corresponding path program 1 times [2021-11-25 19:36:18,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:18,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383148850] [2021-11-25 19:36:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:18,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:36:18,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:18,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383148850] [2021-11-25 19:36:18,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383148850] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:18,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070120132] [2021-11-25 19:36:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:18,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:18,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:18,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:18,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb18debd-f296-44c2-bd8d-ee6b54ac5138/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:36:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:18,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:36:18,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:36:18,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:36:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:36:18,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070120132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:36:18,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334335283] [2021-11-25 19:36:18,831 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2021-11-25 19:36:18,831 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:36:18,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:36:18,833 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:36:18,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:37:00,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-25 19:37:00,293 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-25 19:37:00,547 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2021-11-25 19:37:22,819 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2021-11-25 19:37:23,066 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2021-11-25 19:37:35,066 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 269 for LOIs [2021-11-25 19:37:37,947 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2021-11-25 19:37:37,985 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2021-11-25 19:37:38,079 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2021-11-25 19:37:38,596 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 443 for LOIs [2021-11-25 19:37:38,852 INFO L180 IcfgInterpreter]: Interpretation finished