./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b26e97b5c42973451de5f20f984873ade34b15aaa31cbbdc58b330ea8f51f185 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:25:35,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:25:35,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:25:35,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:25:35,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:25:35,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:25:35,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:25:35,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:25:35,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:25:35,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:25:35,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:25:35,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:25:35,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:25:35,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:25:35,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:25:35,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:25:35,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:25:35,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:25:35,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:25:35,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:25:35,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:25:35,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:25:35,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:25:35,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:25:36,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:25:36,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:25:36,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:25:36,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:25:36,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:25:36,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:25:36,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:25:36,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:25:36,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:25:36,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:25:36,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:25:36,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:25:36,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:25:36,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:25:36,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:25:36,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:25:36,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:25:36,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:25:36,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:25:36,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:25:36,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:25:36,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:25:36,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:25:36,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:25:36,082 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:25:36,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:25:36,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:25:36,083 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:25:36,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:25:36,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:25:36,084 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:25:36,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:25:36,085 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:25:36,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:25:36,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:25:36,086 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:25:36,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:25:36,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:25:36,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:25:36,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:25:36,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:25:36,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:25:36,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:25:36,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:25:36,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:25:36,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:25:36,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:25:36,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:25:36,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:25:36,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:25:36,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:25:36,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:25:36,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:25:36,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:25:36,093 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:25:36,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:25:36,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:25:36,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:25:36,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:25:36,094 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_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b26e97b5c42973451de5f20f984873ade34b15aaa31cbbdc58b330ea8f51f185 [2021-11-23 03:25:36,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:25:36,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:25:36,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:25:36,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:25:36,492 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:25:36,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2021-11-23 03:25:36,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/data/a35864bda/1db48e2f1abd4e59a16db9ae6567a3e7/FLAG7d25340b8 [2021-11-23 03:25:37,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:25:37,206 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2021-11-23 03:25:37,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/data/a35864bda/1db48e2f1abd4e59a16db9ae6567a3e7/FLAG7d25340b8 [2021-11-23 03:25:37,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/data/a35864bda/1db48e2f1abd4e59a16db9ae6567a3e7 [2021-11-23 03:25:37,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:25:37,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:25:37,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:25:37,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:25:37,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:25:37,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:37" (1/1) ... [2021-11-23 03:25:37,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604fce48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:37, skipping insertion in model container [2021-11-23 03:25:37,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:25:37" (1/1) ... [2021-11-23 03:25:37,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:25:37,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:25:38,163 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_cee86c42-b962-4127-8d6c-d3ab76339225/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c[46731,46744] [2021-11-23 03:25:38,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:25:38,249 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:25:38,383 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_cee86c42-b962-4127-8d6c-d3ab76339225/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c[46731,46744] [2021-11-23 03:25:38,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:25:38,501 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:25:38,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38 WrapperNode [2021-11-23 03:25:38,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:25:38,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:25:38,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:25:38,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:25:38,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,691 INFO L137 Inliner]: procedures = 130, calls = 219, calls flagged for inlining = 58, calls inlined = 52, statements flattened = 952 [2021-11-23 03:25:38,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:25:38,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:25:38,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:25:38,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:25:38,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:25:38,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:25:38,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:25:38,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:25:38,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (1/1) ... [2021-11-23 03:25:38,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:25:38,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:38,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:25:38,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:25:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 03:25:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 03:25:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 03:25:38,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 03:25:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 03:25:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 03:25:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:25:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 03:25:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 03:25:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 03:25:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 03:25:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 03:25:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 03:25:38,921 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 03:25:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 03:25:38,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 03:25:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 03:25:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 03:25:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 03:25:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 03:25:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 03:25:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 03:25:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 03:25:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:25:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 03:25:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 03:25:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 03:25:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 03:25:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 03:25:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 03:25:38,952 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 03:25:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 03:25:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 03:25:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 03:25:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-11-23 03:25:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-11-23 03:25:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-23 03:25:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-23 03:25:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 03:25:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 03:25:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 03:25:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 03:25:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 03:25:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 03:25:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:25:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 03:25:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 03:25:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 03:25:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 03:25:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:25:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:25:39,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:25:39,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:25:40,338 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:25:40,872 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:25:40,873 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:25:40,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:40 BoogieIcfgContainer [2021-11-23 03:25:40,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:25:40,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:25:40,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:25:40,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:25:40,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:25:37" (1/3) ... [2021-11-23 03:25:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312619f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:40, skipping insertion in model container [2021-11-23 03:25:40,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:25:38" (2/3) ... [2021-11-23 03:25:40,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312619f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:40, skipping insertion in model container [2021-11-23 03:25:40,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:40" (3/3) ... [2021-11-23 03:25:40,891 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2021-11-23 03:25:40,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:25:40,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:25:40,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:25:40,991 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:25:40,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:25:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 108 states have internal predecessors, (139), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-11-23 03:25:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 03:25:41,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:41,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:41,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1022770611, now seen corresponding path program 1 times [2021-11-23 03:25:41,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:41,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689654637] [2021-11-23 03:25:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:41,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:41,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689654637] [2021-11-23 03:25:41,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689654637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:41,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:41,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:25:41,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301001710] [2021-11-23 03:25:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:41,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:25:41,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:25:41,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:25:41,490 INFO L87 Difference]: Start difference. First operand has 183 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 108 states have internal predecessors, (139), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:41,705 INFO L93 Difference]: Finished difference Result 274 states and 361 transitions. [2021-11-23 03:25:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:25:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2021-11-23 03:25:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:41,722 INFO L225 Difference]: With dead ends: 274 [2021-11-23 03:25:41,722 INFO L226 Difference]: Without dead ends: 180 [2021-11-23 03:25:41,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:25:41,731 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:41,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:25:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-23 03:25:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-23 03:25:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 105 states have internal predecessors, (133), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 03:25:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 238 transitions. [2021-11-23 03:25:41,801 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 238 transitions. Word has length 75 [2021-11-23 03:25:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:41,803 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 238 transitions. [2021-11-23 03:25:41,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 238 transitions. [2021-11-23 03:25:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 03:25:41,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:41,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:41,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:25:41,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash -676741265, now seen corresponding path program 1 times [2021-11-23 03:25:41,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236778993] [2021-11-23 03:25:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:41,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:42,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236778993] [2021-11-23 03:25:42,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236778993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:42,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:42,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:25:42,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489453817] [2021-11-23 03:25:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:42,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:25:42,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:42,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:25:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:42,023 INFO L87 Difference]: Start difference. First operand 180 states and 238 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:42,211 INFO L93 Difference]: Finished difference Result 270 states and 346 transitions. [2021-11-23 03:25:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:25:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2021-11-23 03:25:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:42,221 INFO L225 Difference]: With dead ends: 270 [2021-11-23 03:25:42,221 INFO L226 Difference]: Without dead ends: 182 [2021-11-23 03:25:42,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:42,230 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:42,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:25:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-23 03:25:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-11-23 03:25:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 107 states have internal predecessors, (135), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-11-23 03:25:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2021-11-23 03:25:42,274 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 76 [2021-11-23 03:25:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:42,274 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2021-11-23 03:25:42,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2021-11-23 03:25:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 03:25:42,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:42,279 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, 1, 1, 1, 1, 1] [2021-11-23 03:25:42,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:25:42,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:42,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1643487442, now seen corresponding path program 1 times [2021-11-23 03:25:42,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:42,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022229690] [2021-11-23 03:25:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:42,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:42,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:42,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022229690] [2021-11-23 03:25:42,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022229690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:25:42,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:25:42,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:25:42,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060233257] [2021-11-23 03:25:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:25:42,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:25:42,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:25:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:25:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:42,510 INFO L87 Difference]: Start difference. First operand 182 states and 240 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:25:42,663 INFO L93 Difference]: Finished difference Result 399 states and 547 transitions. [2021-11-23 03:25:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:25:42,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2021-11-23 03:25:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:25:42,669 INFO L225 Difference]: With dead ends: 399 [2021-11-23 03:25:42,669 INFO L226 Difference]: Without dead ends: 235 [2021-11-23 03:25:42,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:25:42,677 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:25:42,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 416 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:25:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-23 03:25:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 230. [2021-11-23 03:25:42,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 141 states have internal predecessors, (190), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-23 03:25:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 323 transitions. [2021-11-23 03:25:42,724 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 323 transitions. Word has length 81 [2021-11-23 03:25:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:25:42,726 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 323 transitions. [2021-11-23 03:25:42,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 03:25:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 323 transitions. [2021-11-23 03:25:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 03:25:42,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:42,736 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:25:42,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:25:42,736 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:42,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash -269605495, now seen corresponding path program 1 times [2021-11-23 03:25:42,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:42,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713808397] [2021-11-23 03:25:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:42,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:42,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713808397] [2021-11-23 03:25:42,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713808397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:25:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362884318] [2021-11-23 03:25:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:42,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:42,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:25:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:43,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:25:43,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:43,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:25:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:25:43,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362884318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:25:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18518544] [2021-11-23 03:25:43,744 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-23 03:25:43,744 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:25:43,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:25:43,761 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:25:43,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:26:15,801 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:26:16,191 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:26:16,496 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:26:59,491 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:17,190 WARN L227 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 588 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:28,026 WARN L227 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 590 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:27:51,862 WARN L227 SmtUtils]: Spent 22.24s on a formula simplification. DAG size of input: 589 DAG size of output: 464 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:01,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [18518544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:28:01,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:28:01,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 03:28:01,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258153854] [2021-11-23 03:28:01,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:28:01,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:28:01,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:28:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:28:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:28:01,777 INFO L87 Difference]: Start difference. First operand 230 states and 323 transitions. Second operand has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-23 03:28:16,523 WARN L227 SmtUtils]: Spent 9.25s on a formula simplification. DAG size of input: 591 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:25,683 WARN L227 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 592 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:46,656 WARN L227 SmtUtils]: Spent 17.65s on a formula simplification. DAG size of input: 589 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:28:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:28:53,606 INFO L93 Difference]: Finished difference Result 546 states and 820 transitions. [2021-11-23 03:28:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 03:28:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 82 [2021-11-23 03:28:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:28:53,611 INFO L225 Difference]: With dead ends: 546 [2021-11-23 03:28:53,611 INFO L226 Difference]: Without dead ends: 334 [2021-11-23 03:28:53,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 148.5s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:28:53,616 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 261 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:28:53,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 2994 Invalid, 1962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:28:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-23 03:28:53,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 258. [2021-11-23 03:28:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 166 states have (on average 1.3795180722891567) internal successors, (229), 168 states have internal predecessors, (229), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-23 03:28:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 362 transitions. [2021-11-23 03:28:53,717 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 362 transitions. Word has length 82 [2021-11-23 03:28:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:28:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 362 transitions. [2021-11-23 03:28:53,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-23 03:28:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 362 transitions. [2021-11-23 03:28:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:28:53,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:28:53,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:28:53,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:28:53,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:28:53,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:28:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:28:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash -570599582, now seen corresponding path program 1 times [2021-11-23 03:28:53,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:28:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437023752] [2021-11-23 03:28:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:53,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:28:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:54,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:28:54,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437023752] [2021-11-23 03:28:54,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437023752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:28:54,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591087434] [2021-11-23 03:28:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:28:54,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:28:54,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:28:54,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:28:54,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:28:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:28:54,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:28:54,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:28:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:54,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:28:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:28:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591087434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:28:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [921123038] [2021-11-23 03:28:54,787 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2021-11-23 03:28:54,787 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:28:54,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:28:54,788 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:28:54,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:29:35,933 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:29:36,185 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2021-11-23 03:29:36,448 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:29:53,337 WARN L227 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:23,494 WARN L227 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:42,881 WARN L227 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 579 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:30:58,077 WARN L227 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 566 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:04,667 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 570 DAG size of output: 362 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:17,041 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 580 DAG size of output: 384 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:17,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [921123038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:17,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:31:17,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 03:31:17,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055683317] [2021-11-23 03:31:17,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:17,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 03:31:17,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:17,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 03:31:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2021-11-23 03:31:17,049 INFO L87 Difference]: Start difference. First operand 258 states and 362 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 03:31:24,056 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 429 DAG size of output: 359 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:31:49,997 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 494 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:03,961 INFO L93 Difference]: Finished difference Result 601 states and 899 transitions. [2021-11-23 03:32:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 03:32:03,962 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 88 [2021-11-23 03:32:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:03,968 INFO L225 Difference]: With dead ends: 601 [2021-11-23 03:32:03,968 INFO L226 Difference]: Without dead ends: 389 [2021-11-23 03:32:03,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 137.4s TimeCoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:32:03,971 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 194 mSDsluCounter, 3421 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:03,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 3541 Invalid, 2734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-23 03:32:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-23 03:32:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 294. [2021-11-23 03:32:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 199 states have (on average 1.4221105527638191) internal successors, (283), 202 states have internal predecessors, (283), 69 states have call successors, (69), 25 states have call predecessors, (69), 25 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-23 03:32:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 420 transitions. [2021-11-23 03:32:04,115 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 420 transitions. Word has length 88 [2021-11-23 03:32:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:04,116 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 420 transitions. [2021-11-23 03:32:04,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 03:32:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 420 transitions. [2021-11-23 03:32:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 03:32:04,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:04,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:04,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:32:04,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:04,348 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:04,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2071481803, now seen corresponding path program 1 times [2021-11-23 03:32:04,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:04,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727096576] [2021-11-23 03:32:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:04,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:32:04,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:04,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727096576] [2021-11-23 03:32:04,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727096576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:32:04,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515567986] [2021-11-23 03:32:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:04,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:04,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:04,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:04,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:32:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:32:04,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:32:05,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:32:05,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515567986] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:05,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309082246] [2021-11-23 03:32:05,293 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2021-11-23 03:32:05,293 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:05,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:05,294 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:05,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:32:37,774 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 03:32:38,022 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 03:32:38,085 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 03:32:38,153 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 449 for LOIs [2021-11-23 03:32:38,439 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:32:38,682 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:33:16,774 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:32,841 WARN L227 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 631 DAG size of output: 404 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:43,608 WARN L227 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 633 DAG size of output: 404 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:33:58,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [309082246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:58,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:33:58,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2021-11-23 03:33:58,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001533258] [2021-11-23 03:33:58,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:58,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 03:33:58,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 03:33:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 03:33:58,931 INFO L87 Difference]: Start difference. First operand 294 states and 420 transitions. Second operand has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-11-23 03:34:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:12,647 INFO L93 Difference]: Finished difference Result 626 states and 938 transitions. [2021-11-23 03:34:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 03:34:12,647 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 91 [2021-11-23 03:34:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:12,652 INFO L225 Difference]: With dead ends: 626 [2021-11-23 03:34:12,652 INFO L226 Difference]: Without dead ends: 414 [2021-11-23 03:34:12,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 84.7s TimeCoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 03:34:12,654 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 176 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 3357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:12,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 3849 Invalid, 3357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 03:34:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-23 03:34:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 353. [2021-11-23 03:34:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 251 states have (on average 1.4462151394422311) internal successors, (363), 255 states have internal predecessors, (363), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-23 03:34:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 508 transitions. [2021-11-23 03:34:12,798 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 508 transitions. Word has length 91 [2021-11-23 03:34:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:12,799 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 508 transitions. [2021-11-23 03:34:12,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-11-23 03:34:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 508 transitions. [2021-11-23 03:34:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 03:34:12,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:12,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:12,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:34:13,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:13,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1154359555, now seen corresponding path program 1 times [2021-11-23 03:34:13,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:13,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121152240] [2021-11-23 03:34:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:13,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:34:13,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121152240] [2021-11-23 03:34:13,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121152240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:13,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155943485] [2021-11-23 03:34:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:13,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:13,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:13,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cee86c42-b962-4127-8d6c-d3ab76339225/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:34:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:13,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:34:13,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:34:13,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 03:34:13,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155943485] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:34:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [918612562] [2021-11-23 03:34:13,698 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2021-11-23 03:34:13,698 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:34:13,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:34:13,699 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:34:13,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:34:43,666 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 03:34:43,929 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2021-11-23 03:34:45,497 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2021-11-23 03:34:45,537 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 03:34:45,784 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2021-11-23 03:34:48,764 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 266 for LOIs [2021-11-23 03:34:53,057 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2021-11-23 03:34:53,264 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-23 03:34:53,309 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2021-11-23 03:34:54,837 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2021-11-23 03:34:54,883 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:35:33,501 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:35:54,110 WARN L227 SmtUtils]: Spent 14.04s on a formula simplification. DAG size of input: 595 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:16,212 WARN L227 SmtUtils]: Spent 20.44s on a formula simplification. DAG size of input: 597 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:40,734 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 575 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:47,090 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 571 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:36:55,140 WARN L227 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 575 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:03,140 WARN L227 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 571 DAG size of output: 429 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:37:10,047 WARN L227 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 575 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)