./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/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 c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:14,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:15,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:03:15,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:15,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:15,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:15,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:15,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:15,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:15,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:15,107 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:15,108 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:15,109 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:15,111 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:03:15,111 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:15,112 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:15,112 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:03:15,112 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:03:15,113 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:15,113 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:03:15,114 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:03:15,114 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:03:15,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:15,116 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:15,116 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:15,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:03:15,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:15,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:15,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:15,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:15,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:15,120 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:15,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:15,121 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:15,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:15,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:15,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:15,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:15,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:15,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:15,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:15,124 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:03:15,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:03:15,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:15,125 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:15,125 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:15,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:15,125 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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2ee13e5ae0bbed1c37b7eadefb29cbd7041f4c5e0d498dc3d4ea1e000526be8 [2023-11-25 00:03:15,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:15,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:15,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:15,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:15,460 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:15,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2023-11-25 00:03:18,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:19,022 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:19,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c [2023-11-25 00:03:19,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/data/b0950509f/c8e961c4ee3d4cceb903a9139021f57a/FLAG302917039 [2023-11-25 00:03:19,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/data/b0950509f/c8e961c4ee3d4cceb903a9139021f57a [2023-11-25 00:03:19,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:19,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:19,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:19,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:19,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:19,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:19" (1/1) ... [2023-11-25 00:03:19,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110b0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:19, skipping insertion in model container [2023-11-25 00:03:19,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:19" (1/1) ... [2023-11-25 00:03:19,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:19,792 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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2023-11-25 00:03:19,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:19,932 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:19,943 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [48] [2023-11-25 00:03:19,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [89] [2023-11-25 00:03:19,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [366] [2023-11-25 00:03:19,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [583] [2023-11-25 00:03:19,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1155] [2023-11-25 00:03:19,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1552] [2023-11-25 00:03:19,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1915] [2023-11-25 00:03:19,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1924] [2023-11-25 00:03:19,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2290] [2023-11-25 00:03:19,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3350] [2023-11-25 00:03:19,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3457] [2023-11-25 00:03:20,017 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_4034f90d-ccb1-4eac-a051-0cb8b06ee781/sv-benchmarks/c/product-lines/email_spec1_productSimulator.cil.c[35789,35802] [2023-11-25 00:03:20,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:20,114 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:03:20,123 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:20,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20 WrapperNode [2023-11-25 00:03:20,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:20,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:20,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:20,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:20,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,255 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1340 [2023-11-25 00:03:20,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:20,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:20,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:20,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:20,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:20,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:20,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:20,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:20,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:20,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:20,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-25 00:03:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-25 00:03:20,540 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-25 00:03:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-25 00:03:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-25 00:03:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-25 00:03:20,541 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-25 00:03:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-25 00:03:20,542 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-25 00:03:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-25 00:03:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-25 00:03:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-25 00:03:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-25 00:03:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-25 00:03:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-25 00:03:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-25 00:03:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-25 00:03:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-25 00:03:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-25 00:03:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-25 00:03:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-25 00:03:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-25 00:03:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-25 00:03:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-25 00:03:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-25 00:03:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-25 00:03:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-25 00:03:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-25 00:03:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-25 00:03:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-25 00:03:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-25 00:03:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-25 00:03:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-25 00:03:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-25 00:03:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-25 00:03:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-25 00:03:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-25 00:03:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-25 00:03:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-25 00:03:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-25 00:03:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-25 00:03:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-25 00:03:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-25 00:03:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-25 00:03:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-25 00:03:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-25 00:03:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-25 00:03:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-25 00:03:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-25 00:03:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-25 00:03:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-25 00:03:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-25 00:03:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-25 00:03:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-25 00:03:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-25 00:03:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-25 00:03:20,554 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-25 00:03:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-25 00:03:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-25 00:03:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-25 00:03:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-25 00:03:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-25 00:03:20,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-25 00:03:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-25 00:03:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-25 00:03:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-25 00:03:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-25 00:03:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-25 00:03:20,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-25 00:03:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-25 00:03:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-25 00:03:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-25 00:03:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-25 00:03:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-25 00:03:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-25 00:03:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-25 00:03:20,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-25 00:03:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-25 00:03:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-25 00:03:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:03:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-25 00:03:20,558 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-25 00:03:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-25 00:03:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-25 00:03:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-25 00:03:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-25 00:03:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-25 00:03:20,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-25 00:03:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:20,815 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:20,818 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:22,057 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:03:22,848 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:03:22,848 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:03:22,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:22 BoogieIcfgContainer [2023-11-25 00:03:22,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:03:22,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:03:22,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:03:22,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:03:22,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:19" (1/3) ... [2023-11-25 00:03:22,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6d881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:22, skipping insertion in model container [2023-11-25 00:03:22,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20" (2/3) ... [2023-11-25 00:03:22,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b6d881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:22, skipping insertion in model container [2023-11-25 00:03:22,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:22" (3/3) ... [2023-11-25 00:03:22,860 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_productSimulator.cil.c [2023-11-25 00:03:22,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:03:22,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:03:22,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:03:23,002 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;@6e753b3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:03:23,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:03:23,010 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) [2023-11-25 00:03:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-25 00:03:23,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:23,029 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] [2023-11-25 00:03:23,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:23,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1309091309, now seen corresponding path program 1 times [2023-11-25 00:03:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:23,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116863040] [2023-11-25 00:03:23,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:03:23,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116863040] [2023-11-25 00:03:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116863040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:23,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:23,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:23,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415776873] [2023-11-25 00:03:23,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:23,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:23,834 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) [2023-11-25 00:03:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:24,129 INFO L93 Difference]: Finished difference Result 729 states and 1001 transitions. [2023-11-25 00:03:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:24,132 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 [2023-11-25 00:03:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:24,149 INFO L225 Difference]: With dead ends: 729 [2023-11-25 00:03:24,149 INFO L226 Difference]: Without dead ends: 377 [2023-11-25 00:03:24,157 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 [2023-11-25 00:03:24,161 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:24,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1385 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-25 00:03:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-25 00:03:24,240 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) [2023-11-25 00:03:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2023-11-25 00:03:24,278 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 97 [2023-11-25 00:03:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:24,280 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2023-11-25 00:03:24,281 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) [2023-11-25 00:03:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2023-11-25 00:03:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:03:24,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:24,289 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] [2023-11-25 00:03:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:03:24,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:24,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash 874502644, now seen corresponding path program 1 times [2023-11-25 00:03:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870995659] [2023-11-25 00:03:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:03:24,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:24,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870995659] [2023-11-25 00:03:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870995659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:24,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:24,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:24,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589957075] [2023-11-25 00:03:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:24,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:24,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:24,588 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) [2023-11-25 00:03:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:24,846 INFO L93 Difference]: Finished difference Result 731 states and 999 transitions. [2023-11-25 00:03:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:24,847 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 [2023-11-25 00:03:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:24,853 INFO L225 Difference]: With dead ends: 731 [2023-11-25 00:03:24,854 INFO L226 Difference]: Without dead ends: 375 [2023-11-25 00:03:24,856 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 [2023-11-25 00:03:24,858 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 476 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:24,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 443 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-25 00:03:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-25 00:03:24,898 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) [2023-11-25 00:03:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 496 transitions. [2023-11-25 00:03:24,903 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 496 transitions. Word has length 103 [2023-11-25 00:03:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:24,904 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 496 transitions. [2023-11-25 00:03:24,904 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) [2023-11-25 00:03:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 496 transitions. [2023-11-25 00:03:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-25 00:03:24,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:24,910 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] [2023-11-25 00:03:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:03:24,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:24,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2114584124, now seen corresponding path program 1 times [2023-11-25 00:03:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502240306] [2023-11-25 00:03:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:03:25,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502240306] [2023-11-25 00:03:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502240306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688758992] [2023-11-25 00:03:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:25,051 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) [2023-11-25 00:03:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:25,233 INFO L93 Difference]: Finished difference Result 724 states and 967 transitions. [2023-11-25 00:03:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:25,234 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 [2023-11-25 00:03:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:25,240 INFO L225 Difference]: With dead ends: 724 [2023-11-25 00:03:25,240 INFO L226 Difference]: Without dead ends: 374 [2023-11-25 00:03:25,245 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 [2023-11-25 00:03:25,249 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 463 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:25,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 462 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-25 00:03:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-25 00:03:25,307 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) [2023-11-25 00:03:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2023-11-25 00:03:25,314 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 114 [2023-11-25 00:03:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:25,317 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2023-11-25 00:03:25,317 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) [2023-11-25 00:03:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2023-11-25 00:03:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-25 00:03:25,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:25,331 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] [2023-11-25 00:03:25,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:03:25,332 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:25,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1491309611, now seen corresponding path program 1 times [2023-11-25 00:03:25,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638252662] [2023-11-25 00:03:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:25,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:03:25,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638252662] [2023-11-25 00:03:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638252662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627448376] [2023-11-25 00:03:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:25,505 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) [2023-11-25 00:03:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:25,691 INFO L93 Difference]: Finished difference Result 705 states and 926 transitions. [2023-11-25 00:03:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:25,692 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 [2023-11-25 00:03:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:25,697 INFO L225 Difference]: With dead ends: 705 [2023-11-25 00:03:25,697 INFO L226 Difference]: Without dead ends: 371 [2023-11-25 00:03:25,699 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 [2023-11-25 00:03:25,706 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 436 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:25,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 438 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-25 00:03:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-25 00:03:25,751 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) [2023-11-25 00:03:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2023-11-25 00:03:25,755 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 115 [2023-11-25 00:03:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:25,756 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2023-11-25 00:03:25,756 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) [2023-11-25 00:03:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2023-11-25 00:03:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-25 00:03:25,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:25,760 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] [2023-11-25 00:03:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:03:25,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:25,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2014818913, now seen corresponding path program 1 times [2023-11-25 00:03:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201419869] [2023-11-25 00:03:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-25 00:03:25,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201419869] [2023-11-25 00:03:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201419869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104204502] [2023-11-25 00:03:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:25,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:25,954 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) [2023-11-25 00:03:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:26,167 INFO L93 Difference]: Finished difference Result 587 states and 745 transitions. [2023-11-25 00:03:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:26,168 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 [2023-11-25 00:03:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:26,172 INFO L225 Difference]: With dead ends: 587 [2023-11-25 00:03:26,172 INFO L226 Difference]: Without dead ends: 373 [2023-11-25 00:03:26,174 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 [2023-11-25 00:03:26,176 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 0 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:26,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 845 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-25 00:03:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-25 00:03:26,207 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) [2023-11-25 00:03:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2023-11-25 00:03:26,210 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 127 [2023-11-25 00:03:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:26,213 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2023-11-25 00:03:26,213 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) [2023-11-25 00:03:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2023-11-25 00:03:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-25 00:03:26,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:26,218 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] [2023-11-25 00:03:26,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:03:26,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:26,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1677020530, now seen corresponding path program 1 times [2023-11-25 00:03:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:26,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107401786] [2023-11-25 00:03:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-25 00:03:26,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107401786] [2023-11-25 00:03:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107401786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:26,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:26,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664189888] [2023-11-25 00:03:26,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:26,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:26,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:26,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:26,370 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) [2023-11-25 00:03:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:26,557 INFO L93 Difference]: Finished difference Result 746 states and 978 transitions. [2023-11-25 00:03:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:26,558 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 [2023-11-25 00:03:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:26,563 INFO L225 Difference]: With dead ends: 746 [2023-11-25 00:03:26,564 INFO L226 Difference]: Without dead ends: 440 [2023-11-25 00:03:26,565 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 [2023-11-25 00:03:26,566 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 76 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:26,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 858 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-25 00:03:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 435. [2023-11-25 00:03:26,602 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) [2023-11-25 00:03:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 575 transitions. [2023-11-25 00:03:26,606 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 575 transitions. Word has length 132 [2023-11-25 00:03:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:26,607 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 575 transitions. [2023-11-25 00:03:26,607 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) [2023-11-25 00:03:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 575 transitions. [2023-11-25 00:03:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-25 00:03:26,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:26,611 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] [2023-11-25 00:03:26,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:03:26,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:03:26,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash 74213999, now seen corresponding path program 1 times [2023-11-25 00:03:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387822839] [2023-11-25 00:03:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-25 00:03:26,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387822839] [2023-11-25 00:03:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387822839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:03:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307486169] [2023-11-25 00:03:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:26,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4034f90d-ccb1-4eac-a051-0cb8b06ee781/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:03:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:27,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:03:27,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-25 00:03:27,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:03:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-25 00:03:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307486169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:03:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1084848805] [2023-11-25 00:03:27,623 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2023-11-25 00:03:27,623 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:03:27,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:03:27,633 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:03:27,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs