./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/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_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/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_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/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 4373ae32f100aa418b32a7018bfdec5c3f7ae719a7f9b296410b14fba54a4baf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:17:00,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:17:00,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:17:00,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:17:00,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:17:00,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:17:00,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:17:00,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:17:00,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:17:00,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:17:00,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:17:00,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:17:00,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:17:00,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:17:00,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:17:00,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:17:00,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:17:00,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:17:00,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:17:00,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:17:00,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:17:00,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:17:00,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:17:01,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:17:01,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:17:01,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:17:01,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:17:01,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:17:01,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:17:01,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:17:01,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:17:01,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:17:01,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:17:01,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:17:01,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:17:01,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:17:01,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:17:01,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:17:01,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:17:01,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:17:01,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:17:01,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:17:01,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:17:01,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:17:01,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:17:01,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:17:01,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:17:01,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:17:01,071 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:17:01,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:17:01,071 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:17:01,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:17:01,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:17:01,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:17:01,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:17:01,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:17:01,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:17:01,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:17:01,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:17:01,074 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:17:01,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:17:01,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:17:01,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:17:01,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:17:01,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:17:01,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:17:01,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:17:01,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:17:01,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:17:01,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:17:01,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:17:01,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:17:01,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:17:01,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:17:01,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:01,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:17:01,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:17:01,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:17:01,080 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:17:01,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:17:01,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:17:01,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:17:01,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:17:01,081 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_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4373ae32f100aa418b32a7018bfdec5c3f7ae719a7f9b296410b14fba54a4baf [2021-11-23 02:17:01,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:17:01,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:17:01,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:17:01,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:17:01,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:17:01,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec4_product27.cil.c [2021-11-23 02:17:01,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/data/216e9f43f/9d17ce80b610430190aab5d34c344798/FLAGeb36ab227 [2021-11-23 02:17:02,055 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:17:02,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c [2021-11-23 02:17:02,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/data/216e9f43f/9d17ce80b610430190aab5d34c344798/FLAGeb36ab227 [2021-11-23 02:17:02,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/data/216e9f43f/9d17ce80b610430190aab5d34c344798 [2021-11-23 02:17:02,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:17:02,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:17:02,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:02,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:17:02,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:17:02,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:02" (1/1) ... [2021-11-23 02:17:02,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4adc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:02, skipping insertion in model container [2021-11-23 02:17:02,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:17:02" (1/1) ... [2021-11-23 02:17:02,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:17:02,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:17:02,598 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_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c[1542,1555] [2021-11-23 02:17:02,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:02,999 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:17:03,011 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_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/sv-benchmarks/c/product-lines/email_spec4_product27.cil.c[1542,1555] [2021-11-23 02:17:03,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:17:03,163 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:17:03,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03 WrapperNode [2021-11-23 02:17:03,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:17:03,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:03,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:17:03,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:17:03,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,288 INFO L137 Inliner]: procedures = 133, calls = 228, calls flagged for inlining = 64, calls inlined = 61, statements flattened = 1112 [2021-11-23 02:17:03,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:17:03,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:17:03,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:17:03,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:17:03,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:17:03,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:17:03,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:17:03,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:17:03,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (1/1) ... [2021-11-23 02:17:03,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:03,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:03,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:17:03,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:17:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-23 02:17:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-23 02:17:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-23 02:17:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-23 02:17:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-23 02:17:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-23 02:17:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 02:17:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 02:17:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:17:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-23 02:17:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 02:17:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 02:17:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 02:17:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 02:17:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 02:17:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 02:17:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-23 02:17:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-23 02:17:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 02:17:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 02:17:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 02:17:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 02:17:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 02:17:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 02:17:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 02:17:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 02:17:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 02:17:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:17:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-23 02:17:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-23 02:17:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-23 02:17:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-23 02:17:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 02:17:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 02:17:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 02:17:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 02:17:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 02:17:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 02:17:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 02:17:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 02:17:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 02:17:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 02:17:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 02:17:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 02:17:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:17:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 02:17:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 02:17:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-23 02:17:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-23 02:17:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:17:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:17:03,769 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:17:03,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:17:04,547 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:17:04,994 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:17:04,994 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:17:04,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:04 BoogieIcfgContainer [2021-11-23 02:17:04,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:17:05,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:17:05,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:17:05,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:17:05,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:17:02" (1/3) ... [2021-11-23 02:17:05,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325de5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:05, skipping insertion in model container [2021-11-23 02:17:05,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:17:03" (2/3) ... [2021-11-23 02:17:05,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325de5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:05, skipping insertion in model container [2021-11-23 02:17:05,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:04" (3/3) ... [2021-11-23 02:17:05,007 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2021-11-23 02:17:05,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:17:05,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:17:05,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:17:05,091 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:17:05,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:17:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 116 states have internal predecessors, (148), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-23 02:17:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 02:17:05,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:05,140 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] [2021-11-23 02:17:05,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash -759364448, now seen corresponding path program 1 times [2021-11-23 02:17:05,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:05,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545166335] [2021-11-23 02:17:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:05,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:05,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545166335] [2021-11-23 02:17:05,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545166335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:05,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:17:05,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779712341] [2021-11-23 02:17:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:05,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:17:05,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:05,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:17:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:17:05,548 INFO L87 Difference]: Start difference. First operand has 198 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 116 states have internal predecessors, (148), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:05,734 INFO L93 Difference]: Finished difference Result 304 states and 407 transitions. [2021-11-23 02:17:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:17:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2021-11-23 02:17:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:05,755 INFO L225 Difference]: With dead ends: 304 [2021-11-23 02:17:05,755 INFO L226 Difference]: Without dead ends: 195 [2021-11-23 02:17:05,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:17:05,771 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:05,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-23 02:17:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-23 02:17:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 113 states have internal predecessors, (142), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 02:17:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 261 transitions. [2021-11-23 02:17:05,868 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 261 transitions. Word has length 65 [2021-11-23 02:17:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:05,871 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 261 transitions. [2021-11-23 02:17:05,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 261 transitions. [2021-11-23 02:17:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:17:05,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:05,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:05,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:17:05,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 129975916, now seen corresponding path program 1 times [2021-11-23 02:17:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:05,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907171223] [2021-11-23 02:17:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:05,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:06,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:06,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907171223] [2021-11-23 02:17:06,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907171223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:06,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:06,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:06,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347441223] [2021-11-23 02:17:06,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:06,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:06,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:06,118 INFO L87 Difference]: Start difference. First operand 195 states and 261 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:06,312 INFO L93 Difference]: Finished difference Result 300 states and 392 transitions. [2021-11-23 02:17:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2021-11-23 02:17:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:06,316 INFO L225 Difference]: With dead ends: 300 [2021-11-23 02:17:06,316 INFO L226 Difference]: Without dead ends: 197 [2021-11-23 02:17:06,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:06,318 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:06,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 441 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-23 02:17:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-23 02:17:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 115 states have internal predecessors, (144), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-11-23 02:17:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 263 transitions. [2021-11-23 02:17:06,348 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 263 transitions. Word has length 66 [2021-11-23 02:17:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:06,350 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 263 transitions. [2021-11-23 02:17:06,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 263 transitions. [2021-11-23 02:17:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:17:06,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:06,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:06,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:17:06,355 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2121415515, now seen corresponding path program 1 times [2021-11-23 02:17:06,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658198315] [2021-11-23 02:17:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:06,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:06,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:06,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658198315] [2021-11-23 02:17:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658198315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:06,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:06,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:06,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669525182] [2021-11-23 02:17:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:06,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:06,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:06,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:06,460 INFO L87 Difference]: Start difference. First operand 197 states and 263 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:06,586 INFO L93 Difference]: Finished difference Result 429 states and 593 transitions. [2021-11-23 02:17:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:06,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2021-11-23 02:17:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:06,590 INFO L225 Difference]: With dead ends: 429 [2021-11-23 02:17:06,590 INFO L226 Difference]: Without dead ends: 250 [2021-11-23 02:17:06,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:06,593 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 59 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:06,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 458 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-23 02:17:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 245. [2021-11-23 02:17:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 149 states have internal predecessors, (199), 74 states have call successors, (74), 23 states have call predecessors, (74), 23 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 02:17:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2021-11-23 02:17:06,620 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 71 [2021-11-23 02:17:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:06,621 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2021-11-23 02:17:06,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:17:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2021-11-23 02:17:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 02:17:06,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:06,624 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:06,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:17:06,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:06,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -145725422, now seen corresponding path program 1 times [2021-11-23 02:17:06,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:06,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177463019] [2021-11-23 02:17:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:06,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:06,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177463019] [2021-11-23 02:17:06,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177463019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:06,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234725279] [2021-11-23 02:17:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:06,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:06,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:06,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:17:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:07,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:07,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:07,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:17:07,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234725279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:07,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1292942698] [2021-11-23 02:17:07,497 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-23 02:17:07,498 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:07,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:07,513 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:07,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:37,626 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:17:37,980 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:17:38,281 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:18:41,581 WARN L227 SmtUtils]: Spent 18.75s on a formula simplification. DAG size of input: 589 DAG size of output: 463 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:18:55,346 WARN L227 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 591 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:01,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1292942698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:19:01,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:19:01,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:19:01,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257139143] [2021-11-23 02:19:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:19:01,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:19:01,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:19:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:19:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:19:01,666 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 02:19:10,735 WARN L227 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 530 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:28,551 WARN L227 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 586 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:19:35,785 INFO L93 Difference]: Finished difference Result 541 states and 799 transitions. [2021-11-23 02:19:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 02:19:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 72 [2021-11-23 02:19:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:19:35,794 INFO L225 Difference]: With dead ends: 541 [2021-11-23 02:19:35,794 INFO L226 Difference]: Without dead ends: 314 [2021-11-23 02:19:35,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 111.3s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:19:35,797 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 131 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:19:35,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 3460 Invalid, 1976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 02:19:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-23 02:19:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 273. [2021-11-23 02:19:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 174 states have (on average 1.367816091954023) internal successors, (238), 176 states have internal predecessors, (238), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 72 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-23 02:19:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 385 transitions. [2021-11-23 02:19:35,886 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 385 transitions. Word has length 72 [2021-11-23 02:19:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:19:35,886 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 385 transitions. [2021-11-23 02:19:35,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 02:19:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 385 transitions. [2021-11-23 02:19:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 02:19:35,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:19:35,889 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:19:35,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:19:36,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 02:19:36,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:19:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:19:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1258749791, now seen corresponding path program 1 times [2021-11-23 02:19:36,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:19:36,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125524351] [2021-11-23 02:19:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:36,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:19:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:19:36,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:19:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125524351] [2021-11-23 02:19:36,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125524351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:19:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224748795] [2021-11-23 02:19:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:19:36,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:19:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:19:36,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:19:36,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:19:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:19:36,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:19:36,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:19:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:19:36,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:19:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:19:36,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224748795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:19:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1545917771] [2021-11-23 02:19:36,821 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2021-11-23 02:19:36,821 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:19:36,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:19:36,822 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:19:36,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:20:08,947 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2021-11-23 02:20:09,197 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:20:09,452 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:13,289 WARN L227 SmtUtils]: Spent 18.34s on a formula simplification. DAG size of input: 585 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:23,553 WARN L227 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 587 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:31,498 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 570 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:37,357 WARN L227 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 566 DAG size of output: 316 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:43,081 WARN L227 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 564 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:45,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1545917771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:45,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:21:45,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2021-11-23 02:21:45,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206412928] [2021-11-23 02:21:45,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:45,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:21:45,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:21:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-11-23 02:21:45,291 INFO L87 Difference]: Start difference. First operand 273 states and 385 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 02:21:58,115 WARN L227 SmtUtils]: Spent 11.62s on a formula simplification. DAG size of input: 522 DAG size of output: 399 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:32,021 WARN L227 SmtUtils]: Spent 7.43s on a formula simplification. DAG size of input: 581 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:22:41,525 INFO L93 Difference]: Finished difference Result 597 states and 880 transitions. [2021-11-23 02:22:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 02:22:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 78 [2021-11-23 02:22:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:22:41,531 INFO L225 Difference]: With dead ends: 597 [2021-11-23 02:22:41,531 INFO L226 Difference]: Without dead ends: 370 [2021-11-23 02:22:41,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 145.0s TimeCoverageRelationStatistics Valid=216, Invalid=1344, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 02:22:41,534 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 154 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:22:41,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 3726 Invalid, 2346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 02:22:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-23 02:22:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 287. [2021-11-23 02:22:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 186 states have (on average 1.3709677419354838) internal successors, (255), 188 states have internal predecessors, (255), 75 states have call successors, (75), 25 states have call predecessors, (75), 25 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2021-11-23 02:22:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 404 transitions. [2021-11-23 02:22:41,614 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 404 transitions. Word has length 78 [2021-11-23 02:22:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:22:41,615 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 404 transitions. [2021-11-23 02:22:41,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-23 02:22:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 404 transitions. [2021-11-23 02:22:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:22:41,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:41,617 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:22:41,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:22:41,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:22:41,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1824324572, now seen corresponding path program 1 times [2021-11-23 02:22:41,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:22:41,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367367262] [2021-11-23 02:22:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:41,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:22:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:22:41,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:22:41,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367367262] [2021-11-23 02:22:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367367262] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:22:41,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633726009] [2021-11-23 02:22:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:41,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:22:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:22:41,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:22:42,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:22:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:22:42,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:22:42,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:22:42,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633726009] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:22:42,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1641875536] [2021-11-23 02:22:42,595 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2021-11-23 02:22:42,595 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:22:42,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:22:42,596 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:22:42,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:23:25,434 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:23:25,675 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 02:23:25,746 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 02:23:25,815 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 449 for LOIs [2021-11-23 02:23:26,106 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:23:26,350 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:24:16,743 WARN L227 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 619 DAG size of output: 406 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:43,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1641875536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:24:43,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:24:43,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 02:24:43,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656799041] [2021-11-23 02:24:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:24:43,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 02:24:43,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:24:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 02:24:43,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 02:24:43,177 INFO L87 Difference]: Start difference. First operand 287 states and 404 transitions. Second operand has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 02:24:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:24:57,785 INFO L93 Difference]: Finished difference Result 606 states and 889 transitions. [2021-11-23 02:24:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:24:57,785 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2021-11-23 02:24:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:24:57,789 INFO L225 Difference]: With dead ends: 606 [2021-11-23 02:24:57,789 INFO L226 Difference]: Without dead ends: 379 [2021-11-23 02:24:57,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 83.4s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 02:24:57,792 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 129 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 4065 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:24:57,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 4065 Invalid, 3150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-23 02:24:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-23 02:24:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 323. [2021-11-23 02:24:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 216 states have (on average 1.375) internal successors, (297), 218 states have internal predecessors, (297), 78 states have call successors, (78), 28 states have call predecessors, (78), 28 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-23 02:24:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 452 transitions. [2021-11-23 02:24:57,907 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 452 transitions. Word has length 81 [2021-11-23 02:24:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:24:57,908 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 452 transitions. [2021-11-23 02:24:57,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-23 02:24:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 452 transitions. [2021-11-23 02:24:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:24:57,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:24:57,910 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:24:57,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:24:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:58,124 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:24:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:24:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 481324300, now seen corresponding path program 1 times [2021-11-23 02:24:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:24:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695987690] [2021-11-23 02:24:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:24:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:24:58,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:24:58,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695987690] [2021-11-23 02:24:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695987690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:24:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345751088] [2021-11-23 02:24:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:24:58,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:24:58,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:24:58,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:24:58,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0e9dab-2dc8-49a2-ae5d-6dbb4fd8baaa/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:24:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:24:58,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:24:58,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:24:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:24:58,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:24:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:24:58,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345751088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:24:58,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112551221] [2021-11-23 02:24:58,819 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2021-11-23 02:24:58,819 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:24:58,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:24:58,822 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:24:58,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:25:32,754 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:25:32,996 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:25:33,240 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 469 for LOIs [2021-11-23 02:25:55,233 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 447 for LOIs [2021-11-23 02:25:55,470 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 467 for LOIs [2021-11-23 02:26:00,581 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2021-11-23 02:26:04,862 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 436 for LOIs [2021-11-23 02:26:05,083 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2021-11-23 02:26:05,587 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2021-11-23 02:26:05,632 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2021-11-23 02:26:05,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:26:59,720 WARN L227 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 599 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:10,634 WARN L227 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 601 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:27:54,738 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 567 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:01,136 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 563 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:06,846 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 564 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:28:32,367 WARN L227 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 523 DAG size of output: 391 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)