./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ --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 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:49,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:49,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:51:49,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:49,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:49,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:49,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:49,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:49,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:49,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:49,531 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:49,533 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:49,533 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:49,535 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:49,535 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:49,536 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:49,536 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:49,537 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:49,537 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:49,538 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:49,538 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:49,539 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:49,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:49,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:49,541 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:49,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:49,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:49,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:49,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:49,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:49,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:49,545 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:49,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:49,546 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:49,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:49,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:49,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:49,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:49,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:49,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:51:49,547 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:49,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:49,548 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:51:49,548 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:49,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:49,549 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_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 [2023-11-19 04:51:49,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:49,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:49,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:49,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:49,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:49,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2023-11-19 04:51:53,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:53,399 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:53,400 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2023-11-19 04:51:53,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/data/3764683d3/5748ebe1d0dc47c0ae346db90a5f80c4/FLAGa5208568b [2023-11-19 04:51:53,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/data/3764683d3/5748ebe1d0dc47c0ae346db90a5f80c4 [2023-11-19 04:51:53,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:53,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:53,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:53,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:53,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:53,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:53" (1/1) ... [2023-11-19 04:51:53,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1776044a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:53, skipping insertion in model container [2023-11-19 04:51:53,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:53" (1/1) ... [2023-11-19 04:51:53,538 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:53,966 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_829df3e7-e1eb-4d71-af6b-b929dfc84020/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2023-11-19 04:51:54,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:54,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:54,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-11-19 04:51:54,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [530] [2023-11-19 04:51:54,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [854] [2023-11-19 04:51:54,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [901] [2023-11-19 04:51:54,213 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1123] [2023-11-19 04:51:54,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1260] [2023-11-19 04:51:54,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1269] [2023-11-19 04:51:54,214 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2329] [2023-11-19 04:51:54,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2695] [2023-11-19 04:51:54,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3092] [2023-11-19 04:51:54,215 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3109] [2023-11-19 04:51:54,318 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_829df3e7-e1eb-4d71-af6b-b929dfc84020/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2023-11-19 04:51:54,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:54,445 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:54,453 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:54,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54 WrapperNode [2023-11-19 04:51:54,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:54,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:54,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:54,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:54,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,571 INFO L138 Inliner]: procedures = 138, calls = 254, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1185 [2023-11-19 04:51:54,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:54,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:54,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:54,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:54,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:54,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:54,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:54,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:54,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (1/1) ... [2023-11-19 04:51:54,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:54,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:54,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:54,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:54,788 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-19 04:51:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-19 04:51:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-19 04:51:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-19 04:51:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-19 04:51:54,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-19 04:51:54,790 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-19 04:51:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-19 04:51:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-19 04:51:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-19 04:51:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 04:51:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 04:51:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-19 04:51:54,793 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-19 04:51:54,793 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 04:51:54,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 04:51:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 04:51:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 04:51:54,796 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 04:51:54,796 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 04:51:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-19 04:51:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-19 04:51:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 04:51:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 04:51:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 04:51:54,797 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 04:51:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 04:51:54,797 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 04:51:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 04:51:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 04:51:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 04:51:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 04:51:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 04:51:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:54,798 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 04:51:54,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 04:51:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 04:51:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 04:51:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-19 04:51:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-19 04:51:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 04:51:54,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 04:51:54,799 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 04:51:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 04:51:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 04:51:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 04:51:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 04:51:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 04:51:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 04:51:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 04:51:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-19 04:51:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-19 04:51:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 04:51:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 04:51:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 04:51:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 04:51:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:51:54,803 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 04:51:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 04:51:54,804 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-19 04:51:54,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-19 04:51:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:54,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:55,065 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:55,068 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:56,318 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:57,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:57,173 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:51:57,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:57 BoogieIcfgContainer [2023-11-19 04:51:57,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:57,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:57,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:57,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:57,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:53" (1/3) ... [2023-11-19 04:51:57,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f393f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:57, skipping insertion in model container [2023-11-19 04:51:57,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:54" (2/3) ... [2023-11-19 04:51:57,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f393f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:57, skipping insertion in model container [2023-11-19 04:51:57,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:57" (3/3) ... [2023-11-19 04:51:57,204 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product35.cil.c [2023-11-19 04:51:57,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:57,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:51:57,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:57,306 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;@3122cd52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:57,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:51:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 143 states have internal predecessors, (177), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 04:51:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 04:51:57,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:57,337 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:57,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:51:57,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash 249683234, now seen corresponding path program 1 times [2023-11-19 04:51:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483800347] [2023-11-19 04:51:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:57,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483800347] [2023-11-19 04:51:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483800347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:57,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483137909] [2023-11-19 04:51:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:57,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:51:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:51:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:51:57,945 INFO L87 Difference]: Start difference. First operand has 246 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 143 states have internal predecessors, (177), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:58,106 INFO L93 Difference]: Finished difference Result 400 states and 533 transitions. [2023-11-19 04:51:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:51:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 87 [2023-11-19 04:51:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:58,122 INFO L225 Difference]: With dead ends: 400 [2023-11-19 04:51:58,122 INFO L226 Difference]: Without dead ends: 243 [2023-11-19 04:51:58,129 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 [2023-11-19 04:51:58,133 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:58,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:58,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-19 04:51:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-11-19 04:51:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-19 04:51:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 324 transitions. [2023-11-19 04:51:58,203 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 324 transitions. Word has length 87 [2023-11-19 04:51:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:58,204 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 324 transitions. [2023-11-19 04:51:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 324 transitions. [2023-11-19 04:51:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 04:51:58,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:58,211 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:58,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:51:58,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:51:58,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1736461600, now seen corresponding path program 1 times [2023-11-19 04:51:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:58,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649912312] [2023-11-19 04:51:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:58,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649912312] [2023-11-19 04:51:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649912312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:58,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:58,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474444478] [2023-11-19 04:51:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:58,577 INFO L87 Difference]: Start difference. First operand 243 states and 324 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:58,721 INFO L93 Difference]: Finished difference Result 396 states and 518 transitions. [2023-11-19 04:51:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:58,722 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2023-11-19 04:51:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:58,726 INFO L225 Difference]: With dead ends: 396 [2023-11-19 04:51:58,726 INFO L226 Difference]: Without dead ends: 245 [2023-11-19 04:51:58,728 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 [2023-11-19 04:51:58,729 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:58,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-19 04:51:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-19 04:51:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 138 states have (on average 1.2536231884057971) internal successors, (173), 142 states have internal predecessors, (173), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-19 04:51:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 326 transitions. [2023-11-19 04:51:58,758 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 326 transitions. Word has length 88 [2023-11-19 04:51:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:58,759 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 326 transitions. [2023-11-19 04:51:58,759 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 326 transitions. [2023-11-19 04:51:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-19 04:51:58,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:58,765 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 04:51:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:51:58,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:51:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1307691038, now seen corresponding path program 1 times [2023-11-19 04:51:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:58,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694128321] [2023-11-19 04:51:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:58,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694128321] [2023-11-19 04:51:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694128321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29773479] [2023-11-19 04:51:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:58,911 INFO L87 Difference]: Start difference. First operand 245 states and 326 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:59,054 INFO L93 Difference]: Finished difference Result 525 states and 719 transitions. [2023-11-19 04:51:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 93 [2023-11-19 04:51:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:59,059 INFO L225 Difference]: With dead ends: 525 [2023-11-19 04:51:59,059 INFO L226 Difference]: Without dead ends: 298 [2023-11-19 04:51:59,060 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 [2023-11-19 04:51:59,062 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 59 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:59,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 559 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-19 04:51:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 293. [2023-11-19 04:51:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 172 states have (on average 1.3255813953488371) internal successors, (228), 176 states have internal predecessors, (228), 91 states have call successors, (91), 29 states have call predecessors, (91), 29 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-19 04:51:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2023-11-19 04:51:59,092 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 93 [2023-11-19 04:51:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:59,093 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2023-11-19 04:51:59,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:51:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2023-11-19 04:51:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 04:51:59,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:59,097 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 04:51:59,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:51:59,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:51:59,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1674578560, now seen corresponding path program 1 times [2023-11-19 04:51:59,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:59,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698298525] [2023-11-19 04:51:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:59,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:59,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698298525] [2023-11-19 04:51:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698298525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667645519] [2023-11-19 04:51:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:59,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:59,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:59,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:59,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829df3e7-e1eb-4d71-af6b-b929dfc84020/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:51:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:59,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:59,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:59,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:51:59,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667645519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942935886] [2023-11-19 04:51:59,926 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2023-11-19 04:51:59,926 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:59,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:59,940 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:59,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs