./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91 --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 a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:32,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:32,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:55:32,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:32,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:32,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:32,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:32,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:32,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:32,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:32,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:32,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:32,726 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:32,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:32,728 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:32,729 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:32,729 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:32,730 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:32,730 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:32,731 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:32,731 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:32,732 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:32,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:32,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:32,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:32,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:32,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:32,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:32,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:32,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:32,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:32,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:32,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:32,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:32,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:32,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:32,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:32,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:32,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:32,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:32,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:32,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:32,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:32,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:32,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:32,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:32,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:32,743 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_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2023-11-24 23:55:33,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:33,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:33,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:33,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:33,058 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:33,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2023-11-24 23:55:36,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:36,553 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:36,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2023-11-24 23:55:36,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/data/5938681af/61035fdd1bb44ede8ae9ffec6ff905c8/FLAG2bd22ae6a [2023-11-24 23:55:36,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/data/5938681af/61035fdd1bb44ede8ae9ffec6ff905c8 [2023-11-24 23:55:36,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:36,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:36,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:36,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:36,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:36,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:36" (1/1) ... [2023-11-24 23:55:36,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a38096a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:36, skipping insertion in model container [2023-11-24 23:55:36,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:36" (1/1) ... [2023-11-24 23:55:36,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:37,310 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_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2023-11-24 23:55:37,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:37,537 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:37,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-24 23:55:37,549 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [335] [2023-11-24 23:55:37,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [747] [2023-11-24 23:55:37,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1323] [2023-11-24 23:55:37,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1686] [2023-11-24 23:55:37,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1695] [2023-11-24 23:55:37,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [2061] [2023-11-24 23:55:37,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2103] [2023-11-24 23:55:37,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2210] [2023-11-24 23:55:37,552 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2414] [2023-11-24 23:55:37,552 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2431] [2023-11-24 23:55:37,594 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_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2023-11-24 23:55:37,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:37,671 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:55:37,679 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:37,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37 WrapperNode [2023-11-24 23:55:37,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:37,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:37,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:37,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:37,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,808 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1356 [2023-11-24 23:55:37,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:37,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:37,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:37,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:37,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:37,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:37,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:37,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:37,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (1/1) ... [2023-11-24 23:55:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:37,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:38,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-24 23:55:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-24 23:55:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-24 23:55:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-24 23:55:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-24 23:55:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-24 23:55:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-24 23:55:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-24 23:55:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-24 23:55:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-24 23:55:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-24 23:55:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-24 23:55:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-24 23:55:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-24 23:55:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-24 23:55:38,029 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-24 23:55:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-24 23:55:38,029 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-24 23:55:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-24 23:55:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-24 23:55:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-24 23:55:38,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-24 23:55:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-24 23:55:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-24 23:55:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-24 23:55:38,036 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-24 23:55:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-24 23:55:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-24 23:55:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-24 23:55:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-24 23:55:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-24 23:55:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-24 23:55:38,037 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-24 23:55:38,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-24 23:55:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-24 23:55:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-24 23:55:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-24 23:55:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-24 23:55:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-24 23:55:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-24 23:55:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-24 23:55:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-24 23:55:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-24 23:55:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-24 23:55:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-24 23:55:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-24 23:55:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-24 23:55:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-24 23:55:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-24 23:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-24 23:55:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-24 23:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-24 23:55:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-24 23:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-24 23:55:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-24 23:55:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-24 23:55:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-24 23:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-24 23:55:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-24 23:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-24 23:55:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-24 23:55:38,043 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-24 23:55:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-24 23:55:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-24 23:55:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-24 23:55:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-24 23:55:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-24 23:55:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-24 23:55:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-24 23:55:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-24 23:55:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-24 23:55:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-24 23:55:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-24 23:55:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-24 23:55:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-24 23:55:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-24 23:55:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-24 23:55:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-24 23:55:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-24 23:55:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-24 23:55:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-24 23:55:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-24 23:55:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-24 23:55:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-24 23:55:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-24 23:55:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-24 23:55:38,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-24 23:55:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:38,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:38,333 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:38,338 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:39,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:40,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:40,425 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:40,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:40 BoogieIcfgContainer [2023-11-24 23:55:40,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:40,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:40,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:40,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:40,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:36" (1/3) ... [2023-11-24 23:55:40,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:40, skipping insertion in model container [2023-11-24 23:55:40,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:37" (2/3) ... [2023-11-24 23:55:40,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f50dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:40, skipping insertion in model container [2023-11-24 23:55:40,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:40" (3/3) ... [2023-11-24 23:55:40,440 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2023-11-24 23:55:40,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:40,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:40,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:40,553 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;@3cc7b2c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:40,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-24 23:55:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-24 23:55:40,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:40,601 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:40,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1762373797, now seen corresponding path program 1 times [2023-11-24 23:55:40,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:40,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291803349] [2023-11-24 23:55:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-24 23:55:41,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:41,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291803349] [2023-11-24 23:55:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291803349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:41,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:41,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552109168] [2023-11-24 23:55:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:41,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:41,370 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-24 23:55:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:41,726 INFO L93 Difference]: Finished difference Result 729 states and 1001 transitions. [2023-11-24 23:55:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2023-11-24 23:55:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:41,747 INFO L225 Difference]: With dead ends: 729 [2023-11-24 23:55:41,747 INFO L226 Difference]: Without dead ends: 377 [2023-11-24 23:55:41,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:41,759 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:41,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1382 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-24 23:55:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-24 23:55:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-24 23:55:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2023-11-24 23:55:41,851 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2023-11-24 23:55:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:41,853 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2023-11-24 23:55:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-24 23:55:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2023-11-24 23:55:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-24 23:55:41,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:41,860 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:41,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:41,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash -959004206, now seen corresponding path program 1 times [2023-11-24 23:55:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898580455] [2023-11-24 23:55:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-24 23:55:42,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898580455] [2023-11-24 23:55:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898580455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:42,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:42,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531252556] [2023-11-24 23:55:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:42,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:42,151 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-24 23:55:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:42,328 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2023-11-24 23:55:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:42,328 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 103 [2023-11-24 23:55:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:42,339 INFO L225 Difference]: With dead ends: 731 [2023-11-24 23:55:42,340 INFO L226 Difference]: Without dead ends: 375 [2023-11-24 23:55:42,342 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 [2023-11-24 23:55:42,344 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 476 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:42,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 442 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-24 23:55:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-24 23:55:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 223 states have (on average 1.2690582959641257) internal successors, (283), 240 states have internal predecessors, (283), 107 states have call successors, (107), 44 states have call predecessors, (107), 44 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-24 23:55:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2023-11-24 23:55:42,387 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2023-11-24 23:55:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:42,387 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2023-11-24 23:55:42,388 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), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-24 23:55:42,388 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2023-11-24 23:55:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-24 23:55:42,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:42,428 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:55:42,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 771695388, now seen corresponding path program 1 times [2023-11-24 23:55:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204726546] [2023-11-24 23:55:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-24 23:55:42,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204726546] [2023-11-24 23:55:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204726546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:42,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:42,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132978188] [2023-11-24 23:55:42,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:42,625 INFO L87 Difference]: Start difference. First operand 375 states and 496 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:55:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:42,779 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2023-11-24 23:55:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:42,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2023-11-24 23:55:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:42,784 INFO L225 Difference]: With dead ends: 724 [2023-11-24 23:55:42,785 INFO L226 Difference]: Without dead ends: 374 [2023-11-24 23:55:42,789 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 [2023-11-24 23:55:42,790 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 463 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:42,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 461 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-24 23:55:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-24 23:55:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 239 states have internal predecessors, (281), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-24 23:55:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2023-11-24 23:55:42,840 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2023-11-24 23:55:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:42,842 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2023-11-24 23:55:42,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:55:42,843 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2023-11-24 23:55:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 23:55:42,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:42,854 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:55:42,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:42,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1584595652, now seen corresponding path program 1 times [2023-11-24 23:55:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135883938] [2023-11-24 23:55:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-24 23:55:42,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135883938] [2023-11-24 23:55:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135883938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680626162] [2023-11-24 23:55:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:42,972 INFO L87 Difference]: Start difference. First operand 374 states and 492 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:55:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:43,161 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2023-11-24 23:55:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 115 [2023-11-24 23:55:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:43,166 INFO L225 Difference]: With dead ends: 705 [2023-11-24 23:55:43,167 INFO L226 Difference]: Without dead ends: 371 [2023-11-24 23:55:43,168 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 [2023-11-24 23:55:43,175 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 436 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 437 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-24 23:55:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-24 23:55:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 223 states have (on average 1.210762331838565) internal successors, (270), 234 states have internal predecessors, (270), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-24 23:55:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2023-11-24 23:55:43,234 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2023-11-24 23:55:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:43,235 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2023-11-24 23:55:43,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-24 23:55:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2023-11-24 23:55:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:55:43,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:43,240 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:43,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:55:43,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:43,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash -811525834, now seen corresponding path program 1 times [2023-11-24 23:55:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:43,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472107165] [2023-11-24 23:55:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 23:55:43,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472107165] [2023-11-24 23:55:43,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472107165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:43,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:43,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330002198] [2023-11-24 23:55:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:43,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:43,458 INFO L87 Difference]: Start difference. First operand 371 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:55:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:43,645 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2023-11-24 23:55:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2023-11-24 23:55:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:43,649 INFO L225 Difference]: With dead ends: 587 [2023-11-24 23:55:43,650 INFO L226 Difference]: Without dead ends: 373 [2023-11-24 23:55:43,651 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 [2023-11-24 23:55:43,654 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:43,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 843 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-24 23:55:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-24 23:55:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 225 states have (on average 1.208888888888889) internal successors, (272), 236 states have internal predecessors, (272), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-24 23:55:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2023-11-24 23:55:43,690 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2023-11-24 23:55:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:43,693 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2023-11-24 23:55:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:55:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2023-11-24 23:55:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-24 23:55:43,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:43,698 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:43,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:55:43,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:43,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:43,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1120390586, now seen corresponding path program 1 times [2023-11-24 23:55:43,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:43,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807918575] [2023-11-24 23:55:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:43,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 23:55:43,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807918575] [2023-11-24 23:55:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807918575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247528925] [2023-11-24 23:55:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:43,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:43,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:43,852 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:55:44,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:44,070 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2023-11-24 23:55:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:44,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 132 [2023-11-24 23:55:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:44,074 INFO L225 Difference]: With dead ends: 746 [2023-11-24 23:55:44,074 INFO L226 Difference]: Without dead ends: 440 [2023-11-24 23:55:44,076 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 [2023-11-24 23:55:44,076 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 76 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:44,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 848 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-24 23:55:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2023-11-24 23:55:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 273 states have (on average 1.2527472527472527) internal successors, (342), 284 states have internal predecessors, (342), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-24 23:55:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2023-11-24 23:55:44,114 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2023-11-24 23:55:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:44,115 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2023-11-24 23:55:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-24 23:55:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2023-11-24 23:55:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 23:55:44,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:44,118 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:55:44,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:44,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash 586810592, now seen corresponding path program 1 times [2023-11-24 23:55:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:44,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731294153] [2023-11-24 23:55:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 23:55:44,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731294153] [2023-11-24 23:55:44,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731294153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961023448] [2023-11-24 23:55:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:44,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:44,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:44,316 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:44,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0267a009-03da-43f8-ba9d-c1e4c73bdf5d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:55:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:44,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:44,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 23:55:44,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 23:55:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961023448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1420168213] [2023-11-24 23:55:45,074 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2023-11-24 23:55:45,074 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:45,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:45,084 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:45,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs