./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:03,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:04,042 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:13:04,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:04,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:04,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:04,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:04,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:04,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:04,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:04,103 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:04,104 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:04,105 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:04,106 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:04,107 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:04,107 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:04,108 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:04,108 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:04,109 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:04,109 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:04,110 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:04,111 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:04,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:04,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:04,113 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:13:04,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:04,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:13:04,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:04,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:04,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:04,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:04,117 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:13:04,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:04,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:04,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:04,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:04,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:04,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:04,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:04,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:04,121 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:04,121 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:04,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:04,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:04,122 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:04,123 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:04,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:04,123 INFO L153 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_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29a19c3efa542dcf2ceb090606fb32840c0b6e985b77630bcd852a7818d8a39 [2023-11-23 21:13:04,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:04,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:04,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:04,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:04,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:04,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2023-11-23 21:13:07,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:08,065 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:08,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c [2023-11-23 21:13:08,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/data/48f5904b8/27ece12b8e1c49518bd9ef914e28230a/FLAG8b8c3cd40 [2023-11-23 21:13:08,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/data/48f5904b8/27ece12b8e1c49518bd9ef914e28230a [2023-11-23 21:13:08,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:08,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:08,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:08,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:08,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:08,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:08" (1/1) ... [2023-11-23 21:13:08,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adfe83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:08, skipping insertion in model container [2023-11-23 21:13:08,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:08" (1/1) ... [2023-11-23 21:13:08,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:08,897 WARN L240 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_7a3aec74-9617-463c-b22f-beaa7153548a/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2023-11-23 21:13:08,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:08,949 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:08,962 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-11-23 21:13:08,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [460] [2023-11-23 21:13:08,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [577] [2023-11-23 21:13:08,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [615] [2023-11-23 21:13:08,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [636] [2023-11-23 21:13:08,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [964] [2023-11-23 21:13:08,966 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1330] [2023-11-23 21:13:08,967 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1552] [2023-11-23 21:13:08,967 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2620] [2023-11-23 21:13:08,968 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2960] [2023-11-23 21:13:08,968 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2969] [2023-11-23 21:13:09,180 WARN L240 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_7a3aec74-9617-463c-b22f-beaa7153548a/sv-benchmarks/c/product-lines/email_spec11_product26.cil.c[63627,63640] [2023-11-23 21:13:09,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:09,222 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:09,230 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:09,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09 WrapperNode [2023-11-23 21:13:09,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:09,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:09,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:09,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:09,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,351 INFO L138 Inliner]: procedures = 131, calls = 224, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1099 [2023-11-23 21:13:09,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:09,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:09,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:09,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:09,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:09,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:09,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:09,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:09,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (1/1) ... [2023-11-23 21:13:09,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:09,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:09,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-23 21:13:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-23 21:13:09,593 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-23 21:13:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-23 21:13:09,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-23 21:13:09,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-23 21:13:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-23 21:13:09,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-23 21:13:09,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 21:13:09,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 21:13:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-23 21:13:09,598 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-23 21:13:09,598 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 21:13:09,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 21:13:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 21:13:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 21:13:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 21:13:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 21:13:09,602 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-23 21:13:09,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-23 21:13:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 21:13:09,603 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 21:13:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:13:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 21:13:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 21:13:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-23 21:13:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-23 21:13:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 21:13:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 21:13:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-23 21:13:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-23 21:13:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 21:13:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 21:13:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 21:13:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 21:13:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 21:13:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 21:13:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 21:13:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 21:13:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-23 21:13:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-23 21:13:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 21:13:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 21:13:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-23 21:13:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-23 21:13:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:09,608 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 21:13:09,609 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 21:13:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-23 21:13:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-23 21:13:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:09,974 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:09,979 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:11,365 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:12,148 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:12,148 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:13:12,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:12 BoogieIcfgContainer [2023-11-23 21:13:12,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:12,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:12,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:12,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:12,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:08" (1/3) ... [2023-11-23 21:13:12,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8857a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:12, skipping insertion in model container [2023-11-23 21:13:12,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:09" (2/3) ... [2023-11-23 21:13:12,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8857a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:12, skipping insertion in model container [2023-11-23 21:13:12,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:12" (3/3) ... [2023-11-23 21:13:12,159 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product26.cil.c [2023-11-23 21:13:12,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:12,180 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:12,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:12,244 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25e48f1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:12,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:12,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2023-11-23 21:13:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 21:13:12,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:12,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:12,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:12,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash -594253286, now seen corresponding path program 1 times [2023-11-23 21:13:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:12,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407949156] [2023-11-23 21:13:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:12,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407949156] [2023-11-23 21:13:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407949156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:13:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120331731] [2023-11-23 21:13:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:12,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:13:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:13:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:13:12,856 INFO L87 Difference]: Start difference. First operand has 201 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 118 states have internal predecessors, (148), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:13,046 INFO L93 Difference]: Finished difference Result 310 states and 415 transitions. [2023-11-23 21:13:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:13:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2023-11-23 21:13:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:13,061 INFO L225 Difference]: With dead ends: 310 [2023-11-23 21:13:13,061 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 21:13:13,067 INFO L412 NwaCegarLoop]: 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 [2023-11-23 21:13:13,071 INFO L413 NwaCegarLoop]: 228 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, 228 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 [2023-11-23 21:13:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:13:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 21:13:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-11-23 21:13:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:13:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2023-11-23 21:13:13,131 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 73 [2023-11-23 21:13:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:13,133 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2023-11-23 21:13:13,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2023-11-23 21:13:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:13:13,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:13,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:13,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:13:13,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:13,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1994223828, now seen corresponding path program 1 times [2023-11-23 21:13:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383816191] [2023-11-23 21:13:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:13,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:13,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383816191] [2023-11-23 21:13:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383816191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:13,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33140907] [2023-11-23 21:13:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:13,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:13,422 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:13,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:13,614 INFO L93 Difference]: Finished difference Result 306 states and 400 transitions. [2023-11-23 21:13:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2023-11-23 21:13:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:13,627 INFO L225 Difference]: With dead ends: 306 [2023-11-23 21:13:13,627 INFO L226 Difference]: Without dead ends: 200 [2023-11-23 21:13:13,633 INFO L412 NwaCegarLoop]: 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 [2023-11-23 21:13:13,635 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 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 [2023-11-23 21:13:13,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:13:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-23 21:13:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-11-23 21:13:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 117 states have internal predecessors, (144), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 21:13:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2023-11-23 21:13:13,686 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 74 [2023-11-23 21:13:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:13,689 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2023-11-23 21:13:13,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2023-11-23 21:13:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:13:13,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:13,696 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:13:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:13:13,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:13,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -368976484, now seen corresponding path program 1 times [2023-11-23 21:13:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791470518] [2023-11-23 21:13:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:13,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:13,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791470518] [2023-11-23 21:13:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791470518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477017406] [2023-11-23 21:13:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:13,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:13,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:13,891 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:14,099 INFO L93 Difference]: Finished difference Result 435 states and 601 transitions. [2023-11-23 21:13:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:14,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2023-11-23 21:13:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:14,104 INFO L225 Difference]: With dead ends: 435 [2023-11-23 21:13:14,104 INFO L226 Difference]: Without dead ends: 253 [2023-11-23 21:13:14,107 INFO L412 NwaCegarLoop]: 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 [2023-11-23 21:13:14,112 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 59 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:14,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 461 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-23 21:13:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2023-11-23 21:13:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 147 states have (on average 1.3537414965986394) internal successors, (199), 151 states have internal predecessors, (199), 76 states have call successors, (76), 24 states have call predecessors, (76), 24 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-23 21:13:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 350 transitions. [2023-11-23 21:13:14,181 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 350 transitions. Word has length 79 [2023-11-23 21:13:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:14,184 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 350 transitions. [2023-11-23 21:13:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 21:13:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 350 transitions. [2023-11-23 21:13:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 21:13:14,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:14,189 INFO L195 NwaCegarLoop]: 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] [2023-11-23 21:13:14,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:13:14,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:14,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 367001548, now seen corresponding path program 1 times [2023-11-23 21:13:14,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256126131] [2023-11-23 21:13:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:14,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:14,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:14,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256126131] [2023-11-23 21:13:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256126131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:13:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199114451] [2023-11-23 21:13:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:14,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:14,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:14,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:14,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a3aec74-9617-463c-b22f-beaa7153548a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:13:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:14,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:13:14,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:15,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:13:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 21:13:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199114451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:13:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939095454] [2023-11-23 21:13:15,193 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-11-23 21:13:15,193 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:13:15,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:13:15,204 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:13:15,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs