./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E --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 beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:47:20,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:47:20,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:47:20,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:47:20,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:47:20,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:47:20,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:47:20,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:47:20,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:47:20,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:47:20,625 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:47:20,625 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:47:20,626 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:47:20,626 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:47:20,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:47:20,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:47:20,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:47:20,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:47:20,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:47:20,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:47:20,630 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E 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 -> beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 [2024-11-14 02:47:20,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:47:20,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:47:20,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:47:20,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:47:20,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:47:20,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c Unable to find full path for "g++" [2024-11-14 02:47:22,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:47:23,177 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:47:23,178 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2024-11-14 02:47:23,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/data/bae0a042a/7dcd526f45254759b8511e3434683274/FLAGa88fc1f7f [2024-11-14 02:47:23,271 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/data/bae0a042a/7dcd526f45254759b8511e3434683274 [2024-11-14 02:47:23,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:47:23,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:47:23,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:47:23,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:47:23,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:47:23,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:47:23" (1/1) ... [2024-11-14 02:47:23,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2738d207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:23, skipping insertion in model container [2024-11-14 02:47:23,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:47:23" (1/1) ... [2024-11-14 02:47:23,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:47:23,948 WARN L250 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_d42297e9-1c2b-4873-8416-3015a91821c1/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2024-11-14 02:47:24,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:47:24,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:47:24,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-14 02:47:24,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1128] [2024-11-14 02:47:24,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1435] [2024-11-14 02:47:24,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1801] [2024-11-14 02:47:24,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1836] [2024-11-14 02:47:24,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1845] [2024-11-14 02:47:24,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2061] [2024-11-14 02:47:24,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2436] [2024-11-14 02:47:24,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2494] [2024-11-14 02:47:24,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2893] [2024-11-14 02:47:24,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3028] [2024-11-14 02:47:24,218 WARN L250 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_d42297e9-1c2b-4873-8416-3015a91821c1/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2024-11-14 02:47:24,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:47:24,294 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:47:24,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24 WrapperNode [2024-11-14 02:47:24,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:47:24,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:47:24,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:47:24,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:47:24,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,404 INFO L138 Inliner]: procedures = 132, calls = 211, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1060 [2024-11-14 02:47:24,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:47:24,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:47:24,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:47:24,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:47:24,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:47:24,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:47:24,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:47:24,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:47:24,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (1/1) ... [2024-11-14 02:47:24,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:47:24,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:47:24,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:47:24,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:47:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-14 02:47:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-14 02:47:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-14 02:47:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-14 02:47:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-14 02:47:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-14 02:47:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-14 02:47:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-14 02:47:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-14 02:47:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-14 02:47:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-14 02:47:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-14 02:47:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-14 02:47:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-14 02:47:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-14 02:47:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-14 02:47:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-14 02:47:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-14 02:47:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-14 02:47:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-14 02:47:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-14 02:47:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-14 02:47:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-14 02:47:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-14 02:47:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:47:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-14 02:47:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-14 02:47:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-14 02:47:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-14 02:47:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-14 02:47:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-14 02:47:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 02:47:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-14 02:47:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-14 02:47:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:47:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:47:24,854 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:47:24,857 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:47:26,167 INFO L? ?]: Removed 483 outVars from TransFormulas that were not future-live. [2024-11-14 02:47:26,167 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:47:26,932 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:47:26,932 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:47:26,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:47:26 BoogieIcfgContainer [2024-11-14 02:47:26,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:47:26,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:47:26,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:47:26,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:47:26,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:47:23" (1/3) ... [2024-11-14 02:47:26,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d6ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:47:26, skipping insertion in model container [2024-11-14 02:47:26,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:47:24" (2/3) ... [2024-11-14 02:47:26,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d6ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:47:26, skipping insertion in model container [2024-11-14 02:47:26,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:47:26" (3/3) ... [2024-11-14 02:47:26,943 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2024-11-14 02:47:26,961 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:47:26,964 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec3_product31.cil.c that has 25 procedures, 211 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:47:27,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:47:27,053 INFO L333 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, 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;@40af8662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:47:27,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:47:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-14 02:47:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 02:47:27,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:27,069 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:27,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:47:27,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2040331540, now seen corresponding path program 1 times [2024-11-14 02:47:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286762640] [2024-11-14 02:47:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:27,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286762640] [2024-11-14 02:47:27,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286762640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:27,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:47:27,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:47:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047479792] [2024-11-14 02:47:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:27,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 02:47:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 02:47:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 02:47:27,607 INFO L87 Difference]: Start difference. First operand has 211 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:27,793 INFO L93 Difference]: Finished difference Result 338 states and 452 transitions. [2024-11-14 02:47:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 02:47:27,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 83 [2024-11-14 02:47:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:27,812 INFO L225 Difference]: With dead ends: 338 [2024-11-14 02:47:27,812 INFO L226 Difference]: Without dead ends: 207 [2024-11-14 02:47:27,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 02:47:27,824 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:27,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:47:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-14 02:47:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-14 02:47:27,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 119 states have (on average 1.2857142857142858) internal successors, (153), 123 states have internal predecessors, (153), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-14 02:47:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2024-11-14 02:47:27,893 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 83 [2024-11-14 02:47:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:27,894 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2024-11-14 02:47:27,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2024-11-14 02:47:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-14 02:47:27,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:27,901 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:47:27,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:47:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash 356073848, now seen corresponding path program 1 times [2024-11-14 02:47:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707319103] [2024-11-14 02:47:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:28,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707319103] [2024-11-14 02:47:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707319103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:28,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:47:28,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:47:28,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071591151] [2024-11-14 02:47:28,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:28,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:47:28,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:47:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:47:28,405 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:28,588 INFO L93 Difference]: Finished difference Result 333 states and 436 transitions. [2024-11-14 02:47:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:47:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2024-11-14 02:47:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:28,591 INFO L225 Difference]: With dead ends: 333 [2024-11-14 02:47:28,594 INFO L226 Difference]: Without dead ends: 209 [2024-11-14 02:47:28,595 INFO L431 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 [2024-11-14 02:47:28,597 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:28,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:47:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-14 02:47:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-14 02:47:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 125 states have internal predecessors, (155), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-14 02:47:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2024-11-14 02:47:28,631 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 84 [2024-11-14 02:47:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:28,631 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2024-11-14 02:47:28,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2024-11-14 02:47:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-14 02:47:28,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:28,637 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:28,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:47:28,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:47:28,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1494926866, now seen corresponding path program 1 times [2024-11-14 02:47:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38426736] [2024-11-14 02:47:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:28,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:28,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38426736] [2024-11-14 02:47:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38426736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:47:28,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:47:28,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:47:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584143983] [2024-11-14 02:47:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:47:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:47:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:47:28,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:47:28,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:47:28,908 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:47:29,082 INFO L93 Difference]: Finished difference Result 448 states and 619 transitions. [2024-11-14 02:47:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:47:29,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2024-11-14 02:47:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:47:29,087 INFO L225 Difference]: With dead ends: 448 [2024-11-14 02:47:29,090 INFO L226 Difference]: Without dead ends: 257 [2024-11-14 02:47:29,092 INFO L431 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 [2024-11-14 02:47:29,092 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 57 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:47:29,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 481 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:47:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-14 02:47:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 252. [2024-11-14 02:47:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 157 states have internal predecessors, (208), 75 states have call successors, (75), 24 states have call predecessors, (75), 23 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-14 02:47:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 355 transitions. [2024-11-14 02:47:29,141 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 355 transitions. Word has length 89 [2024-11-14 02:47:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:47:29,141 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 355 transitions. [2024-11-14 02:47:29,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 02:47:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 355 transitions. [2024-11-14 02:47:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-14 02:47:29,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:47:29,145 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:47:29,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:47:29,146 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:47:29,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:47:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -587261970, now seen corresponding path program 1 times [2024-11-14 02:47:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:47:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027403213] [2024-11-14 02:47:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:47:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:29,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:47:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027403213] [2024-11-14 02:47:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027403213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:47:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062938892] [2024-11-14 02:47:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:47:29,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:47:29,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:47:29,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:47:29,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:47:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:47:29,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:47:30,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:47:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:30,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:47:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:47:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062938892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:47:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249476922] [2024-11-14 02:47:30,230 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2024-11-14 02:47:30,230 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:47:30,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:47:30,238 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:47:30,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:48:00,418 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 238 for LOIs [2024-11-14 02:48:00,619 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2024-11-14 02:48:00,725 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:49:00,783 WARN L286 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 468 DAG size of output: 468 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:12,950 WARN L286 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 469 DAG size of output: 468 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1249476922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:49:19,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:49:19,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2024-11-14 02:49:19,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269745181] [2024-11-14 02:49:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:49:19,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 02:49:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:49:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 02:49:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2024-11-14 02:49:19,930 INFO L87 Difference]: Start difference. First operand 252 states and 355 transitions. Second operand has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-14 02:49:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:49:42,592 INFO L93 Difference]: Finished difference Result 518 states and 746 transitions. [2024-11-14 02:49:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 02:49:42,593 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 90 [2024-11-14 02:49:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:49:42,595 INFO L225 Difference]: With dead ends: 518 [2024-11-14 02:49:42,595 INFO L226 Difference]: Without dead ends: 284 [2024-11-14 02:49:42,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 91.2s TimeCoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2024-11-14 02:49:42,597 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 28 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:49:42,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3514 Invalid, 2211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-14 02:49:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-14 02:49:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 275. [2024-11-14 02:49:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 175 states have (on average 1.3771428571428572) internal successors, (241), 179 states have internal predecessors, (241), 75 states have call successors, (75), 25 states have call predecessors, (75), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-14 02:49:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 388 transitions. [2024-11-14 02:49:42,663 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 388 transitions. Word has length 90 [2024-11-14 02:49:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:49:42,665 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 388 transitions. [2024-11-14 02:49:42,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-14 02:49:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 388 transitions. [2024-11-14 02:49:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-14 02:49:42,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:49:42,667 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:49:42,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 02:49:42,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:49:42,876 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:49:42,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:49:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1146453616, now seen corresponding path program 1 times [2024-11-14 02:49:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:49:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719849495] [2024-11-14 02:49:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:49:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:49:43,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:49:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719849495] [2024-11-14 02:49:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719849495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:49:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:49:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:49:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296090119] [2024-11-14 02:49:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:49:43,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:49:43,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:49:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:49:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:49:43,036 INFO L87 Difference]: Start difference. First operand 275 states and 388 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 02:49:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:49:43,270 INFO L93 Difference]: Finished difference Result 643 states and 940 transitions. [2024-11-14 02:49:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:49:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2024-11-14 02:49:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:49:43,275 INFO L225 Difference]: With dead ends: 643 [2024-11-14 02:49:43,275 INFO L226 Difference]: Without dead ends: 392 [2024-11-14 02:49:43,278 INFO L431 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 [2024-11-14 02:49:43,279 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 55 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:49:43,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 497 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:49:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-14 02:49:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 387. [2024-11-14 02:49:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 262 states have (on average 1.4389312977099236) internal successors, (377), 266 states have internal predecessors, (377), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-14 02:49:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 574 transitions. [2024-11-14 02:49:43,412 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 574 transitions. Word has length 95 [2024-11-14 02:49:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:49:43,412 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 574 transitions. [2024-11-14 02:49:43,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 02:49:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 574 transitions. [2024-11-14 02:49:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 02:49:43,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:49:43,417 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:49:43,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 02:49:43,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:49:43,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:49:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1909842323, now seen corresponding path program 1 times [2024-11-14 02:49:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:49:43,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469167] [2024-11-14 02:49:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:43,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:49:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:49:43,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:49:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469167] [2024-11-14 02:49:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:49:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717595852] [2024-11-14 02:49:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:49:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:49:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:49:43,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:49:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:49:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:49:44,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:49:44,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:49:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:49:44,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:49:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:49:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717595852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:49:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049069926] [2024-11-14 02:49:44,199 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 02:49:44,199 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:49:44,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:49:44,199 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:49:44,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:50:26,254 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 238 for LOIs [2024-11-14 02:50:26,419 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 453 for LOIs [2024-11-14 02:50:27,578 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:50:51,699 WARN L286 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 453 DAG size of output: 453 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:02,863 WARN L286 SmtUtils]: Spent 10.83s on a formula simplification. DAG size of input: 477 DAG size of output: 473 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:44,824 WARN L286 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 470 DAG size of output: 470 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:56,299 WARN L286 SmtUtils]: Spent 10.36s on a formula simplification. DAG size of input: 471 DAG size of output: 470 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:52:15,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1049069926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:52:15,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:52:15,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2024-11-14 02:52:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739887101] [2024-11-14 02:52:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:52:15,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 02:52:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:52:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 02:52:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-14 02:52:15,711 INFO L87 Difference]: Start difference. First operand 387 states and 574 transitions. Second operand has 27 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 02:52:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:48,171 INFO L93 Difference]: Finished difference Result 784 states and 1189 transitions. [2024-11-14 02:52:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 02:52:48,172 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 96 [2024-11-14 02:52:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:48,175 INFO L225 Difference]: With dead ends: 784 [2024-11-14 02:52:48,175 INFO L226 Difference]: Without dead ends: 460 [2024-11-14 02:52:48,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 128.2s TimeCoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 02:52:48,178 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 108 mSDsluCounter, 3328 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:48,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 3552 Invalid, 2804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-14 02:52:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-14 02:52:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 401. [2024-11-14 02:52:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 274 states have (on average 1.437956204379562) internal successors, (394), 278 states have internal predecessors, (394), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-14 02:52:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 593 transitions. [2024-11-14 02:52:48,276 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 593 transitions. Word has length 96 [2024-11-14 02:52:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:48,276 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 593 transitions. [2024-11-14 02:52:48,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 02:52:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 593 transitions. [2024-11-14 02:52:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 02:52:48,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:48,279 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:48,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 02:52:48,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:48,479 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:52:48,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1855948651, now seen corresponding path program 1 times [2024-11-14 02:52:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:48,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541560372] [2024-11-14 02:52:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:52:48,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541560372] [2024-11-14 02:52:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541560372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680400802] [2024-11-14 02:52:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:48,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:48,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:48,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:48,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:52:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:49,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:52:49,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:52:49,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:52:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680400802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295776380] [2024-11-14 02:52:49,276 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2024-11-14 02:52:49,276 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:52:49,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:52:49,277 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:52:49,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:53:44,884 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 238 for LOIs [2024-11-14 02:53:45,024 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 499 for LOIs [2024-11-14 02:53:45,962 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 508 for LOIs [2024-11-14 02:53:46,847 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 444 for LOIs [2024-11-14 02:53:47,216 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2024-11-14 02:53:47,320 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:54:48,347 WARN L286 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 528 DAG size of output: 523 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:55:01,381 WARN L286 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 529 DAG size of output: 523 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:55:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1295776380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:55:55,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:55:55,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2024-11-14 02:55:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728660265] [2024-11-14 02:55:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:55:55,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 02:55:55,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:55:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 02:55:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 02:55:55,698 INFO L87 Difference]: Start difference. First operand 401 states and 593 transitions. Second operand has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-14 02:56:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:56:18,379 INFO L93 Difference]: Finished difference Result 807 states and 1222 transitions. [2024-11-14 02:56:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-14 02:56:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 99 [2024-11-14 02:56:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:56:18,383 INFO L225 Difference]: With dead ends: 807 [2024-11-14 02:56:18,383 INFO L226 Difference]: Without dead ends: 483 [2024-11-14 02:56:18,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 131.9s TimeCoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 02:56:18,386 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 75 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:56:18,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3763 Invalid, 3641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3631 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2024-11-14 02:56:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-14 02:56:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 437. [2024-11-14 02:56:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 304 states have (on average 1.4342105263157894) internal successors, (436), 308 states have internal predecessors, (436), 104 states have call successors, (104), 29 states have call predecessors, (104), 28 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2024-11-14 02:56:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 641 transitions. [2024-11-14 02:56:18,552 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 641 transitions. Word has length 99 [2024-11-14 02:56:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:56:18,553 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 641 transitions. [2024-11-14 02:56:18,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-14 02:56:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 641 transitions. [2024-11-14 02:56:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-14 02:56:18,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:56:18,556 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:56:18,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:56:18,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:56:18,756 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:56:18,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:56:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1640730961, now seen corresponding path program 1 times [2024-11-14 02:56:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:56:18,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647743115] [2024-11-14 02:56:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:56:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:56:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:56:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:56:18,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:56:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647743115] [2024-11-14 02:56:18,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647743115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:56:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187913764] [2024-11-14 02:56:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:56:18,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:56:18,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:56:18,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:56:18,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:56:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:56:19,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:56:19,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:56:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:56:19,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:56:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 02:56:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187913764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:56:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [748545575] [2024-11-14 02:56:19,437 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2024-11-14 02:56:19,437 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:56:19,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:56:19,438 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:56:19,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:57:01,157 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 238 for LOIs [2024-11-14 02:57:01,296 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2024-11-14 02:57:01,397 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:58:01,402 WARN L286 SmtUtils]: Spent 10.30s on a formula simplification. DAG size of input: 469 DAG size of output: 469 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:58:13,216 WARN L286 SmtUtils]: Spent 10.69s on a formula simplification. DAG size of input: 470 DAG size of output: 469 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:58:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [748545575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:38,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:58:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2024-11-14 02:58:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351416937] [2024-11-14 02:58:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:38,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 02:58:38,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 02:58:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 02:58:38,274 INFO L87 Difference]: Start difference. First operand 437 states and 641 transitions. Second operand has 28 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-14 02:59:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:19,574 INFO L93 Difference]: Finished difference Result 809 states and 1213 transitions. [2024-11-14 02:59:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 02:59:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 98 [2024-11-14 02:59:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:19,579 INFO L225 Difference]: With dead ends: 809 [2024-11-14 02:59:19,579 INFO L226 Difference]: Without dead ends: 485 [2024-11-14 02:59:19,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 261 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 127.0s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 02:59:19,582 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 27 mSDsluCounter, 3800 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:19,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 4017 Invalid, 2838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-14 02:59:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-14 02:59:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 457. [2024-11-14 02:59:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 324 states have (on average 1.4382716049382716) internal successors, (466), 328 states have internal predecessors, (466), 104 states have call successors, (104), 29 states have call predecessors, (104), 28 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2024-11-14 02:59:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 671 transitions. [2024-11-14 02:59:19,743 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 671 transitions. Word has length 98 [2024-11-14 02:59:19,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:19,744 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 671 transitions. [2024-11-14 02:59:19,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 2.6) internal successors, (52), 19 states have internal predecessors, (52), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-14 02:59:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 671 transitions. [2024-11-14 02:59:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-14 02:59:19,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:19,747 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:19,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 02:59:19,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:19,947 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:19,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash -488299174, now seen corresponding path program 1 times [2024-11-14 02:59:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386591618] [2024-11-14 02:59:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:19,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:59:20,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386591618] [2024-11-14 02:59:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386591618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520977654] [2024-11-14 02:59:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:20,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:20,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:59:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:20,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:59:20,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:59:20,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:59:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 02:59:20,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520977654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:59:20,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927912935] [2024-11-14 02:59:20,718 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 02:59:20,720 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:59:20,720 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:59:20,721 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:59:20,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:59:54,642 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 238 for LOIs [2024-11-14 02:59:54,780 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 453 for LOIs [2024-11-14 02:59:55,851 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:00:20,608 WARN L286 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 453 DAG size of output: 453 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:00:32,432 WARN L286 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 477 DAG size of output: 472 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:01:23,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [927912935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:23,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:01:23,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [5, 5, 5] total 32 [2024-11-14 03:01:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741423320] [2024-11-14 03:01:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:23,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:01:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:01:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-14 03:01:23,966 INFO L87 Difference]: Start difference. First operand 457 states and 671 transitions. Second operand has 27 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 03:01:45,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:45,303 INFO L93 Difference]: Finished difference Result 879 states and 1315 transitions. [2024-11-14 03:01:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 03:01:45,304 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 101 [2024-11-14 03:01:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:45,307 INFO L225 Difference]: With dead ends: 879 [2024-11-14 03:01:45,307 INFO L226 Difference]: Without dead ends: 515 [2024-11-14 03:01:45,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 274 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 95.8s TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 03:01:45,311 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 75 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:45,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3893 Invalid, 3376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2024-11-14 03:01:45,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-14 03:01:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 466. [2024-11-14 03:01:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 331 states have (on average 1.4290030211480362) internal successors, (473), 335 states have internal predecessors, (473), 105 states have call successors, (105), 30 states have call predecessors, (105), 29 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-14 03:01:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 680 transitions. [2024-11-14 03:01:45,512 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 680 transitions. Word has length 101 [2024-11-14 03:01:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:45,512 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 680 transitions. [2024-11-14 03:01:45,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-14 03:01:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 680 transitions. [2024-11-14 03:01:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 03:01:45,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:45,514 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:45,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:01:45,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:45,717 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:45,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1222316815, now seen corresponding path program 1 times [2024-11-14 03:01:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429565708] [2024-11-14 03:01:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 03:01:47,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429565708] [2024-11-14 03:01:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429565708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:01:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435169098] [2024-11-14 03:01:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:47,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:01:47,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:01:47,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42297e9-1c2b-4873-8416-3015a91821c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:01:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:48,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:01:48,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:01:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 03:01:48,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:01:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 03:01:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435169098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:01:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1366583649] [2024-11-14 03:01:48,614 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2024-11-14 03:01:48,614 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:01:48,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:01:48,615 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:01:48,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs