./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product35.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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/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 66ba4360d8cd17925c78e04f17940e3bee0e828bd2ae8cc06c9e6a2549687bf9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:03,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:03,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:03,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:03,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:03,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:03,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:03,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:03,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:03,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:03,554 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:03,555 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:03,555 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:03,556 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:03,557 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:03,557 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:03,558 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:03,558 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:03,559 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:03,559 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:03,560 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:03,561 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:03,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:03,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:03,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:03,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:03,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:03,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:03,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:03,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:03,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:03,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:03,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:03,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:03,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:03,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:03,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:03,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:03,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:03,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:03,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:03,570 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:03,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:03,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:03,571 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:03,571 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:03,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:03,571 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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66ba4360d8cd17925c78e04f17940e3bee0e828bd2ae8cc06c9e6a2549687bf9 [2023-11-23 21:16:03,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:03,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:03,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:03,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:03,934 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:03,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec27_product35.cil.c [2023-11-23 21:16:07,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:07,663 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:07,664 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c [2023-11-23 21:16:07,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/data/fabb2cf7c/2f575516a71f4eb4b771a409c221ffec/FLAG5cb85f12d [2023-11-23 21:16:07,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/data/fabb2cf7c/2f575516a71f4eb4b771a409c221ffec [2023-11-23 21:16:07,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:07,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:07,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:07,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:07,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:07,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:07" (1/1) ... [2023-11-23 21:16:07,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649275d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:07, skipping insertion in model container [2023-11-23 21:16:07,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:07" (1/1) ... [2023-11-23 21:16:07,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:08,300 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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c[40704,40717] [2023-11-23 21:16:08,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:08,418 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:08,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-23 21:16:08,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [208] [2023-11-23 21:16:08,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [225] [2023-11-23 21:16:08,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1305] [2023-11-23 21:16:08,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1671] [2023-11-23 21:16:08,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1680] [2023-11-23 21:16:08,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1718] [2023-11-23 21:16:08,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2120] [2023-11-23 21:16:08,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [2560] [2023-11-23 21:16:08,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2591] [2023-11-23 21:16:08,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2901] [2023-11-23 21:16:08,493 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_a7b0835a-c6c9-4b1c-806f-30f70c73929a/sv-benchmarks/c/product-lines/email_spec27_product35.cil.c[40704,40717] [2023-11-23 21:16:08,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:08,583 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:16:08,592 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:08,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08 WrapperNode [2023-11-23 21:16:08,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:08,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:08,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:08,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:08,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,744 INFO L138 Inliner]: procedures = 137, calls = 248, calls flagged for inlining = 65, calls inlined = 62, statements flattened = 1150 [2023-11-23 21:16:08,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:08,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:08,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:08,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:08,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:08,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:08,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:08,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:08,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (1/1) ... [2023-11-23 21:16:08,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:08,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:09,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-23 21:16:09,032 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-23 21:16:09,032 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-23 21:16:09,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-23 21:16:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-23 21:16:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-23 21:16:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-23 21:16:09,034 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-23 21:16:09,034 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-23 21:16:09,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-23 21:16:09,036 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 21:16:09,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 21:16:09,037 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-23 21:16:09,037 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-23 21:16:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 21:16:09,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 21:16:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 21:16:09,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 21:16:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 21:16:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 21:16:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-23 21:16:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-23 21:16:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-23 21:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-23 21:16:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 21:16:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 21:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 21:16:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 21:16:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-23 21:16:09,043 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-23 21:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 21:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 21:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-23 21:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-23 21:16:09,044 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-23 21:16:09,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-23 21:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-23 21:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-23 21:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 21:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 21:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 21:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 21:16:09,045 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 21:16:09,045 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 21:16:09,046 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-11-23 21:16:09,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-11-23 21:16:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-23 21:16:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-23 21:16:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 21:16:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 21:16:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-23 21:16:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-23 21:16:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 21:16:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 21:16:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-23 21:16:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-23 21:16:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 21:16:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 21:16:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-23 21:16:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-23 21:16:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:09,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:09,335 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:09,338 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:10,660 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:11,584 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:11,584 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:11,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:11 BoogieIcfgContainer [2023-11-23 21:16:11,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:11,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:11,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:11,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:11,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:07" (1/3) ... [2023-11-23 21:16:11,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a42ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:11, skipping insertion in model container [2023-11-23 21:16:11,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:08" (2/3) ... [2023-11-23 21:16:11,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a42ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:11, skipping insertion in model container [2023-11-23 21:16:11,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:11" (3/3) ... [2023-11-23 21:16:11,601 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product35.cil.c [2023-11-23 21:16:11,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:11,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:11,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:11,714 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;@4a05af5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:11,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 144 states have internal predecessors, (178), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-23 21:16:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 21:16:11,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:11,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:11,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:11,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 289281050, now seen corresponding path program 1 times [2023-11-23 21:16:11,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:11,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978762231] [2023-11-23 21:16:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:11,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:12,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978762231] [2023-11-23 21:16:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978762231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:12,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:12,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:16:12,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726600763] [2023-11-23 21:16:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:12,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:16:12,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:16:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:16:12,422 INFO L87 Difference]: Start difference. First operand has 248 states, 139 states have (on average 1.2805755395683454) internal successors, (178), 144 states have internal predecessors, (178), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:12,604 INFO L93 Difference]: Finished difference Result 404 states and 535 transitions. [2023-11-23 21:16:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:16:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 110 [2023-11-23 21:16:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:12,620 INFO L225 Difference]: With dead ends: 404 [2023-11-23 21:16:12,620 INFO L226 Difference]: Without dead ends: 245 [2023-11-23 21:16:12,627 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 21:16:12,631 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:12,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:16:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-23 21:16:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-23 21:16:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 141 states have internal predecessors, (172), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:16:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 325 transitions. [2023-11-23 21:16:12,713 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 325 transitions. Word has length 110 [2023-11-23 21:16:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:12,715 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 325 transitions. [2023-11-23 21:16:12,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 325 transitions. [2023-11-23 21:16:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 21:16:12,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:12,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:16:12,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:12,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash 839406146, now seen corresponding path program 1 times [2023-11-23 21:16:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039905784] [2023-11-23 21:16:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:13,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:13,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039905784] [2023-11-23 21:16:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039905784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:13,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551219197] [2023-11-23 21:16:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:13,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:13,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:13,189 INFO L87 Difference]: Start difference. First operand 245 states and 325 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:13,420 INFO L93 Difference]: Finished difference Result 400 states and 520 transitions. [2023-11-23 21:16:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:13,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 111 [2023-11-23 21:16:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:13,425 INFO L225 Difference]: With dead ends: 400 [2023-11-23 21:16:13,426 INFO L226 Difference]: Without dead ends: 247 [2023-11-23 21:16:13,430 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 21:16:13,436 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:13,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-23 21:16:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-23 21:16:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 139 states have (on average 1.2517985611510791) internal successors, (174), 143 states have internal predecessors, (174), 77 states have call successors, (77), 30 states have call predecessors, (77), 30 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-23 21:16:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 327 transitions. [2023-11-23 21:16:13,498 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 327 transitions. Word has length 111 [2023-11-23 21:16:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:13,500 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 327 transitions. [2023-11-23 21:16:13,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 327 transitions. [2023-11-23 21:16:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 21:16:13,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:13,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:16:13,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:13,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash -359036825, now seen corresponding path program 1 times [2023-11-23 21:16:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:13,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148959940] [2023-11-23 21:16:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:13,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148959940] [2023-11-23 21:16:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148959940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:13,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:13,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:13,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536560007] [2023-11-23 21:16:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:13,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:13,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:13,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:13,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:13,798 INFO L87 Difference]: Start difference. First operand 247 states and 327 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:14,036 INFO L93 Difference]: Finished difference Result 529 states and 721 transitions. [2023-11-23 21:16:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:14,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 116 [2023-11-23 21:16:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:14,041 INFO L225 Difference]: With dead ends: 529 [2023-11-23 21:16:14,041 INFO L226 Difference]: Without dead ends: 300 [2023-11-23 21:16:14,043 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 21:16:14,045 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 59 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:14,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 565 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-23 21:16:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2023-11-23 21:16:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 173 states have (on average 1.323699421965318) internal successors, (229), 177 states have internal predecessors, (229), 91 states have call successors, (91), 30 states have call predecessors, (91), 30 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-23 21:16:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 410 transitions. [2023-11-23 21:16:14,080 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 410 transitions. Word has length 116 [2023-11-23 21:16:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:14,081 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 410 transitions. [2023-11-23 21:16:14,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:16:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 410 transitions. [2023-11-23 21:16:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 21:16:14,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:14,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:14,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:16:14,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:14,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash 417373935, now seen corresponding path program 1 times [2023-11-23 21:16:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536679758] [2023-11-23 21:16:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:14,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:14,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536679758] [2023-11-23 21:16:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536679758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261292500] [2023-11-23 21:16:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:14,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:14,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:14,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b0835a-c6c9-4b1c-806f-30f70c73929a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:14,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:16:14,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:15,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 21:16:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261292500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306885205] [2023-11-23 21:16:15,309 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2023-11-23 21:16:15,309 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:16:15,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:16:15,327 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:16:15,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs