./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product07.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product07.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh --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 ca488828ecb96ea32a61c8f7cc33f9cc148887f4e62691829b51b0a2976db03e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:50:20,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:50:20,303 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:50:20,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:50:20,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:50:20,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:50:20,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:50:20,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:50:20,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:50:20,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:50:20,334 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:50:20,335 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:50:20,336 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:50:20,336 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:50:20,337 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:50:20,337 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:50:20,338 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:50:20,338 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:50:20,339 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:50:20,339 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:50:20,340 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:50:20,341 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:50:20,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:50:20,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:50:20,343 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:50:20,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:50:20,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:50:20,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:50:20,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:50:20,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:50:20,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:50:20,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:50:20,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:50:20,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:50:20,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:50:20,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:50:20,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:50:20,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:50:20,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:50:20,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:50:20,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:50:20,348 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:50:20,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:50:20,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:50:20,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:50:20,349 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:50:20,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:50:20,349 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca488828ecb96ea32a61c8f7cc33f9cc148887f4e62691829b51b0a2976db03e [2023-12-02 15:50:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:50:20,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:50:20,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:50:20,572 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:50:20,573 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:50:20,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec11_product07.cil.c [2023-12-02 15:50:23,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:50:23,542 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:50:23,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/sv-benchmarks/c/product-lines/email_spec11_product07.cil.c [2023-12-02 15:50:23,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/data/c9b1e7f50/cadac37076494ee58fa69fe5017d719b/FLAGcdcb1cdbf [2023-12-02 15:50:23,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/data/c9b1e7f50/cadac37076494ee58fa69fe5017d719b [2023-12-02 15:50:23,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:50:23,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:50:23,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:50:23,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:50:23,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:50:23,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:23" (1/1) ... [2023-12-02 15:50:23,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c11b9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23, skipping insertion in model container [2023-12-02 15:50:23,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:23" (1/1) ... [2023-12-02 15:50:23,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:50:24,096 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/sv-benchmarks/c/product-lines/email_spec11_product07.cil.c[47468,47481] [2023-12-02 15:50:24,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:50:24,155 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:50:24,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-02 15:50:24,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [460] [2023-12-02 15:50:24,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1540] [2023-12-02 15:50:24,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1706] [2023-12-02 15:50:24,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1910] [2023-12-02 15:50:24,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1975] [2023-12-02 15:50:24,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2010] [2023-12-02 15:50:24,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2205] [2023-12-02 15:50:24,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2214] [2023-12-02 15:50:24,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2580] [2023-12-02 15:50:24,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2599] [2023-12-02 15:50:24,229 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/sv-benchmarks/c/product-lines/email_spec11_product07.cil.c[47468,47481] [2023-12-02 15:50:24,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:50:24,289 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:50:24,297 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:50:24,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24 WrapperNode [2023-12-02 15:50:24,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:50:24,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:50:24,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:50:24,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:50:24,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,381 INFO L138 Inliner]: procedures = 110, calls = 144, calls flagged for inlining = 36, calls inlined = 30, statements flattened = 626 [2023-12-02 15:50:24,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:50:24,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:50:24,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:50:24,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:50:24,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:50:24,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:50:24,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:50:24,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:50:24,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (1/1) ... [2023-12-02 15:50:24,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:50:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:24,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:50:24,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:50:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 15:50:24,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 15:50:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 15:50:24,505 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 15:50:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 15:50:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 15:50:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-12-02 15:50:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-12-02 15:50:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 15:50:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 15:50:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 15:50:24,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 15:50:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 15:50:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 15:50:24,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 15:50:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 15:50:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 15:50:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:50:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 15:50:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 15:50:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 15:50:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 15:50:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 15:50:24,509 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 15:50:24,509 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 15:50:24,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 15:50:24,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:50:24,509 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 15:50:24,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 15:50:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:50:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:50:24,666 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:50:24,668 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:50:25,136 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:50:25,458 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:50:25,458 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:50:25,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:25 BoogieIcfgContainer [2023-12-02 15:50:25,460 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:50:25,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:50:25,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:50:25,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:50:25,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:50:23" (1/3) ... [2023-12-02 15:50:25,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f695558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:25, skipping insertion in model container [2023-12-02 15:50:25,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:24" (2/3) ... [2023-12-02 15:50:25,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f695558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:25, skipping insertion in model container [2023-12-02 15:50:25,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:25" (3/3) ... [2023-12-02 15:50:25,469 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product07.cil.c [2023-12-02 15:50:25,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:50:25,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:50:25,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:50:25,543 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2805e9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:50:25,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:50:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 70 states have internal predecessors, (97), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:50:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 15:50:25,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:25,560 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:25,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:50:25,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1484916735, now seen corresponding path program 1 times [2023-12-02 15:50:25,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310605771] [2023-12-02 15:50:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:50:25,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:25,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310605771] [2023-12-02 15:50:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310605771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:50:25,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:50:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:50:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484029490] [2023-12-02 15:50:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:50:25,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:50:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:50:25,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:50:25,902 INFO L87 Difference]: Start difference. First operand has 107 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 70 states have internal predecessors, (97), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:50:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:25,991 INFO L93 Difference]: Finished difference Result 171 states and 229 transitions. [2023-12-02 15:50:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:50:25,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2023-12-02 15:50:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:26,004 INFO L225 Difference]: With dead ends: 171 [2023-12-02 15:50:26,004 INFO L226 Difference]: Without dead ends: 104 [2023-12-02 15:50:26,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:50:26,011 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:26,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:50:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-02 15:50:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-02 15:50:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.4) internal successors, (91), 67 states have internal predecessors, (91), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 15:50:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2023-12-02 15:50:26,058 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 49 [2023-12-02 15:50:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:26,060 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2023-12-02 15:50:26,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:50:26,061 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2023-12-02 15:50:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 15:50:26,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:26,081 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:26,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:50:26,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:50:26,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 998960635, now seen corresponding path program 1 times [2023-12-02 15:50:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444866139] [2023-12-02 15:50:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:50:26,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444866139] [2023-12-02 15:50:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444866139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:50:26,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:50:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:50:26,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190137327] [2023-12-02 15:50:26,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:50:26,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:50:26,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:50:26,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:50:26,235 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:50:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:26,313 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2023-12-02 15:50:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:50:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-12-02 15:50:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:26,316 INFO L225 Difference]: With dead ends: 167 [2023-12-02 15:50:26,316 INFO L226 Difference]: Without dead ends: 106 [2023-12-02 15:50:26,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:50:26,319 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:26,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:50:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-02 15:50:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-02 15:50:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 69 states have internal predecessors, (93), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 15:50:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-12-02 15:50:26,336 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 50 [2023-12-02 15:50:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:26,336 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-12-02 15:50:26,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:50:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-12-02 15:50:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 15:50:26,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:26,339 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:50:26,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:50:26,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1989644096, now seen corresponding path program 1 times [2023-12-02 15:50:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:26,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182821889] [2023-12-02 15:50:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:50:26,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182821889] [2023-12-02 15:50:26,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182821889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:50:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792881084] [2023-12-02 15:50:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:26,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:26,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:50:26,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:50:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:26,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:50:26,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:50:26,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:50:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792881084] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:50:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682387215] [2023-12-02 15:50:26,911 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 15:50:26,911 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:50:26,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:50:26,920 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:50:26,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:50:46,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:50:46,813 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:14,251 WARN L293 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 447 DAG size of output: 447 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:51:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1682387215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:51:19,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:51:19,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2023-12-02 15:51:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453969078] [2023-12-02 15:51:19,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:51:19,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:51:19,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:51:19,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:51:19,619 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:51:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:22,915 INFO L93 Difference]: Finished difference Result 250 states and 367 transitions. [2023-12-02 15:51:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:51:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2023-12-02 15:51:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:22,917 INFO L225 Difference]: With dead ends: 250 [2023-12-02 15:51:22,917 INFO L226 Difference]: Without dead ends: 156 [2023-12-02 15:51:22,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:51:22,919 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 47 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:22,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1392 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 15:51:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-02 15:51:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 127. [2023-12-02 15:51:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 90 states have internal predecessors, (125), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 15:51:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2023-12-02 15:51:22,941 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 54 [2023-12-02 15:51:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:22,941 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2023-12-02 15:51:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:51:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2023-12-02 15:51:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 15:51:22,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:22,944 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:22,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:51:23,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:23,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:51:23,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1716339412, now seen corresponding path program 1 times [2023-12-02 15:51:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394820289] [2023-12-02 15:51:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:51:23,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394820289] [2023-12-02 15:51:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394820289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:51:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:51:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:51:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131211495] [2023-12-02 15:51:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:51:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:51:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:51:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:51:23,220 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:51:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:23,296 INFO L93 Difference]: Finished difference Result 295 states and 421 transitions. [2023-12-02 15:51:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:51:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-12-02 15:51:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:23,299 INFO L225 Difference]: With dead ends: 295 [2023-12-02 15:51:23,299 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:51:23,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:51:23,301 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 48 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:23,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 232 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:51:23,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:51:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 177. [2023-12-02 15:51:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 135 states have (on average 1.4962962962962962) internal successors, (202), 137 states have internal predecessors, (202), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:51:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 257 transitions. [2023-12-02 15:51:23,338 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 257 transitions. Word has length 55 [2023-12-02 15:51:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:23,339 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 257 transitions. [2023-12-02 15:51:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:51:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 257 transitions. [2023-12-02 15:51:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 15:51:23,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:23,341 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 15:51:23,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:51:23,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -838496337, now seen corresponding path program 1 times [2023-12-02 15:51:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185361832] [2023-12-02 15:51:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:51:23,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:23,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185361832] [2023-12-02 15:51:23,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185361832] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:51:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145375229] [2023-12-02 15:51:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:23,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:23,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:23,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:51:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:23,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:51:23,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:51:23,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:51:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145375229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:51:23,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279947631] [2023-12-02 15:51:23,752 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-12-02 15:51:23,752 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:23,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:23,753 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:23,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:51:45,616 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:51:45,783 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:52:13,089 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 450 DAG size of output: 450 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:52:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1279947631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:52:24,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2023-12-02 15:52:24,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863746020] [2023-12-02 15:52:24,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:24,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:52:24,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:52:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:52:24,186 INFO L87 Difference]: Start difference. First operand 177 states and 257 transitions. Second operand has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:52:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:27,086 INFO L93 Difference]: Finished difference Result 367 states and 559 transitions. [2023-12-02 15:52:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:52:27,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2023-12-02 15:52:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:27,089 INFO L225 Difference]: With dead ends: 367 [2023-12-02 15:52:27,089 INFO L226 Difference]: Without dead ends: 245 [2023-12-02 15:52:27,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:52:27,091 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 147 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:27,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1073 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 15:52:27,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-02 15:52:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 185. [2023-12-02 15:52:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 143 states have (on average 1.4965034965034965) internal successors, (214), 145 states have internal predecessors, (214), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:52:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 269 transitions. [2023-12-02 15:52:27,137 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 269 transitions. Word has length 56 [2023-12-02 15:52:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:27,137 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 269 transitions. [2023-12-02 15:52:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:52:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 269 transitions. [2023-12-02 15:52:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 15:52:27,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:27,140 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:52:27,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:52:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:52:27,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:52:27,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1478749342, now seen corresponding path program 1 times [2023-12-02 15:52:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010375410] [2023-12-02 15:52:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:52:27,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010375410] [2023-12-02 15:52:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010375410] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:52:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67544904] [2023-12-02 15:52:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:52:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:52:27,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:52:27,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:52:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:27,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:52:27,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:52:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:52:27,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:52:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:52:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67544904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:52:27,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1482318605] [2023-12-02 15:52:27,777 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 15:52:27,777 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:52:27,778 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:52:27,778 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:52:27,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:52:52,581 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:52:52,747 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:53:20,064 WARN L293 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 451 DAG size of output: 451 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:53:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1482318605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:53:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:53:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2023-12-02 15:53:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34469133] [2023-12-02 15:53:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:53:36,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:53:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:53:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:53:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-12-02 15:53:36,816 INFO L87 Difference]: Start difference. First operand 185 states and 269 transitions. Second operand has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:53:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:53:41,176 INFO L93 Difference]: Finished difference Result 371 states and 564 transitions. [2023-12-02 15:53:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 15:53:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2023-12-02 15:53:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:53:41,178 INFO L225 Difference]: With dead ends: 371 [2023-12-02 15:53:41,178 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 15:53:41,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 44.1s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-12-02 15:53:41,180 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 76 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:53:41,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1336 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-02 15:53:41,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 15:53:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 195. [2023-12-02 15:53:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 155 states have internal predecessors, (229), 28 states have call successors, (28), 13 states have call predecessors, (28), 13 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:53:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2023-12-02 15:53:41,216 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 58 [2023-12-02 15:53:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:53:41,217 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2023-12-02 15:53:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:53:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2023-12-02 15:53:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 15:53:41,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:53:41,219 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:53:41,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 15:53:41,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:53:41,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:53:41,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:53:41,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1622913839, now seen corresponding path program 1 times [2023-12-02 15:53:41,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:53:41,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491703755] [2023-12-02 15:53:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:53:41,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:53:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:53:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:53:41,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:53:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491703755] [2023-12-02 15:53:41,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491703755] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:53:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934218169] [2023-12-02 15:53:41,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:53:41,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:53:41,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:53:41,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:53:41,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:53:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:53:41,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:53:41,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:53:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:53:41,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:53:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:53:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934218169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:53:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [209185623] [2023-12-02 15:53:41,914 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-12-02 15:53:41,915 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:53:41,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:53:41,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:53:41,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:54:15,950 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:54:16,114 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 242 for LOIs [2023-12-02 15:54:19,580 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2023-12-02 15:54:19,730 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 240 for LOIs [2023-12-02 15:54:21,472 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 240 for LOIs [2023-12-02 15:54:26,908 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 233 for LOIs [2023-12-02 15:54:27,037 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 231 for LOIs [2023-12-02 15:54:27,197 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 249 for LOIs [2023-12-02 15:54:28,501 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2023-12-02 15:54:28,620 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:55:37,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [209185623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:55:37,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:55:37,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [6, 5, 5] total 53 [2023-12-02 15:55:37,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387070303] [2023-12-02 15:55:37,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:55:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-02 15:55:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:55:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-02 15:55:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2604, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 15:55:37,787 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:55:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:47,920 INFO L93 Difference]: Finished difference Result 460 states and 694 transitions. [2023-12-02 15:55:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 15:55:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2023-12-02 15:55:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:47,924 INFO L225 Difference]: With dead ends: 460 [2023-12-02 15:55:47,924 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 15:55:47,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 70.5s TimeCoverageRelationStatistics Valid=159, Invalid=2703, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 15:55:47,927 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 168 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:47,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2221 Invalid, 3301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 15:55:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 15:55:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2023-12-02 15:55:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 190 states have (on average 1.4526315789473685) internal successors, (276), 193 states have internal predecessors, (276), 37 states have call successors, (37), 21 states have call predecessors, (37), 19 states have return successors, (37), 32 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-02 15:55:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 350 transitions. [2023-12-02 15:55:47,999 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 350 transitions. Word has length 59 [2023-12-02 15:55:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:47,999 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 350 transitions. [2023-12-02 15:55:48,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 29 states have (on average 1.103448275862069) internal successors, (32), 26 states have internal predecessors, (32), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:55:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 350 transitions. [2023-12-02 15:55:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 15:55:48,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:48,001 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:55:48,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:55:48,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:55:48,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:55:48,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1470233763, now seen corresponding path program 1 times [2023-12-02 15:55:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:55:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799205999] [2023-12-02 15:55:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:55:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:55:48,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:55:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799205999] [2023-12-02 15:55:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799205999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:55:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898508314] [2023-12-02 15:55:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:48,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:55:48,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:55:48,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:55:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:48,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:55:48,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:55:48,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:55:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:55:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898508314] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:55:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [88251813] [2023-12-02 15:55:48,562 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 15:55:48,562 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:55:48,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:55:48,563 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:55:48,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:56:16,962 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:56:17,127 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:56:44,894 WARN L293 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 453 DAG size of output: 453 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:57:07,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [88251813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:57:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [4, 4, 4] total 25 [2023-12-02 15:57:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820240062] [2023-12-02 15:57:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:57:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:57:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:57:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:57:07,197 INFO L87 Difference]: Start difference. First operand 247 states and 350 transitions. Second operand has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:57:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:57:10,976 INFO L93 Difference]: Finished difference Result 431 states and 641 transitions. [2023-12-02 15:57:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 15:57:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 60 [2023-12-02 15:57:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:57:10,979 INFO L225 Difference]: With dead ends: 431 [2023-12-02 15:57:10,980 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 15:57:10,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:57:10,981 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 85 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:57:10,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1212 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-02 15:57:10,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 15:57:11,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2023-12-02 15:57:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 202 states have (on average 1.4554455445544554) internal successors, (294), 205 states have internal predecessors, (294), 37 states have call successors, (37), 21 states have call predecessors, (37), 19 states have return successors, (37), 32 states have call predecessors, (37), 36 states have call successors, (37) [2023-12-02 15:57:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 368 transitions. [2023-12-02 15:57:11,046 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 368 transitions. Word has length 60 [2023-12-02 15:57:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:57:11,047 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 368 transitions. [2023-12-02 15:57:11,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.1875) internal successors, (35), 15 states have internal predecessors, (35), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 15:57:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 368 transitions. [2023-12-02 15:57:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 15:57:11,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:57:11,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:57:11,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:57:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:57:11,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:57:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:57:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 366948382, now seen corresponding path program 1 times [2023-12-02 15:57:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:57:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991339818] [2023-12-02 15:57:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:57:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:57:11,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:57:11,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991339818] [2023-12-02 15:57:11,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991339818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:57:11,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158712369] [2023-12-02 15:57:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:11,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:57:11,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:57:11,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:57:11,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:57:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:11,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:57:11,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:57:11,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:57:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:57:11,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158712369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:57:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [689510602] [2023-12-02 15:57:11,642 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 15:57:11,642 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:57:11,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:57:11,642 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:57:11,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:57:47,489 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:57:47,652 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 241 for LOIs [2023-12-02 15:57:51,079 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 229 for LOIs [2023-12-02 15:57:51,248 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 239 for LOIs [2023-12-02 15:57:52,911 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 239 for LOIs [2023-12-02 15:57:56,202 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 230 for LOIs [2023-12-02 15:57:56,362 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 248 for LOIs [2023-12-02 15:57:57,666 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 221 for LOIs [2023-12-02 15:57:57,784 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:59:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [689510602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:59:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [6, 5, 5] total 50 [2023-12-02 15:59:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341476510] [2023-12-02 15:59:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:00,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-02 15:59:00,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:59:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-02 15:59:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2308, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 15:59:00,828 INFO L87 Difference]: Start difference. First operand 259 states and 368 transitions. Second operand has 42 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 25 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:59:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:13,396 INFO L93 Difference]: Finished difference Result 545 states and 805 transitions. [2023-12-02 15:59:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 15:59:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 25 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 61 [2023-12-02 15:59:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:13,399 INFO L225 Difference]: With dead ends: 545 [2023-12-02 15:59:13,399 INFO L226 Difference]: Without dead ends: 418 [2023-12-02 15:59:13,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 65.6s TimeCoverageRelationStatistics Valid=159, Invalid=2493, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 15:59:13,402 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 134 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:13,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 2942 Invalid, 3611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 3585 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 15:59:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-02 15:59:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 326. [2023-12-02 15:59:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 256 states have (on average 1.4375) internal successors, (368), 260 states have internal predecessors, (368), 45 states have call successors, (45), 28 states have call predecessors, (45), 24 states have return successors, (45), 37 states have call predecessors, (45), 44 states have call successors, (45) [2023-12-02 15:59:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 458 transitions. [2023-12-02 15:59:13,527 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 458 transitions. Word has length 61 [2023-12-02 15:59:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:13,528 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 458 transitions. [2023-12-02 15:59:13,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 25 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:59:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 458 transitions. [2023-12-02 15:59:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 15:59:13,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:13,530 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:13,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:59:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 15:59:13,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:13,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash -342269720, now seen corresponding path program 1 times [2023-12-02 15:59:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:59:13,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123071602] [2023-12-02 15:59:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:13,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:59:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:59:13,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:59:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123071602] [2023-12-02 15:59:13,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123071602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:59:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142916597] [2023-12-02 15:59:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:13,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:59:13,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:59:13,823 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:59:13,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:59:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:14,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:59:14,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:59:14,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:59:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:59:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142916597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:59:14,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1612814722] [2023-12-02 15:59:14,124 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2023-12-02 15:59:14,125 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:59:14,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:59:14,125 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:59:14,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:59:45,426 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 15:59:45,591 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:00:12,946 WARN L293 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 455 DAG size of output: 455 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:00:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1612814722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:00:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2023-12-02 16:00:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351807772] [2023-12-02 16:00:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 16:00:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:00:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 16:00:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:00:41,426 INFO L87 Difference]: Start difference. First operand 326 states and 458 transitions. Second operand has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 16:00:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:46,173 INFO L93 Difference]: Finished difference Result 506 states and 742 transitions. [2023-12-02 16:00:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 16:00:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2023-12-02 16:00:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:46,176 INFO L225 Difference]: With dead ends: 506 [2023-12-02 16:00:46,176 INFO L226 Difference]: Without dead ends: 384 [2023-12-02 16:00:46,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:00:46,178 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 135 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:46,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1251 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 16:00:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-02 16:00:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 340. [2023-12-02 16:00:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 270 states have (on average 1.4407407407407407) internal successors, (389), 274 states have internal predecessors, (389), 45 states have call successors, (45), 28 states have call predecessors, (45), 24 states have return successors, (45), 37 states have call predecessors, (45), 44 states have call successors, (45) [2023-12-02 16:00:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2023-12-02 16:00:46,288 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 62 [2023-12-02 16:00:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:46,289 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2023-12-02 16:00:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 16:00:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2023-12-02 16:00:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 16:00:46,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:46,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:46,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:00:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:00:46,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:00:46,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -917688847, now seen corresponding path program 1 times [2023-12-02 16:00:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:00:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646477392] [2023-12-02 16:00:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:00:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:00:46,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:00:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646477392] [2023-12-02 16:00:46,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646477392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:00:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155408146] [2023-12-02 16:00:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:00:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:00:46,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:00:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:00:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:46,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:00:46,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:00:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:00:46,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:00:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:00:46,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155408146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:00:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1246637526] [2023-12-02 16:00:46,914 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-12-02 16:00:46,914 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:00:46,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:00:46,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:00:46,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:01:19,408 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 16:01:19,572 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 242 for LOIs [2023-12-02 16:01:22,955 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2023-12-02 16:01:23,117 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 240 for LOIs [2023-12-02 16:01:24,852 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 240 for LOIs [2023-12-02 16:01:30,126 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 233 for LOIs [2023-12-02 16:01:30,253 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 231 for LOIs [2023-12-02 16:01:30,413 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 249 for LOIs [2023-12-02 16:01:31,716 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 222 for LOIs [2023-12-02 16:01:31,834 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:02:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1246637526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:02:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:02:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [6, 5, 5] total 55 [2023-12-02 16:02:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291116640] [2023-12-02 16:02:42,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:02:42,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-02 16:02:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:02:42,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-02 16:02:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2803, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 16:02:42,908 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 47 states, 31 states have (on average 1.096774193548387) internal successors, (34), 28 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:02:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:02:56,652 INFO L93 Difference]: Finished difference Result 652 states and 946 transitions. [2023-12-02 16:02:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-02 16:02:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 31 states have (on average 1.096774193548387) internal successors, (34), 28 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 63 [2023-12-02 16:02:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:02:56,656 INFO L225 Difference]: With dead ends: 652 [2023-12-02 16:02:56,656 INFO L226 Difference]: Without dead ends: 530 [2023-12-02 16:02:56,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 73.6s TimeCoverageRelationStatistics Valid=184, Invalid=3008, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 16:02:56,658 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 209 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 3915 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:02:56,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 3058 Invalid, 3951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 3915 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-02 16:02:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-12-02 16:02:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 347. [2023-12-02 16:02:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 277 states have (on average 1.447653429602888) internal successors, (401), 281 states have internal predecessors, (401), 45 states have call successors, (45), 28 states have call predecessors, (45), 24 states have return successors, (45), 37 states have call predecessors, (45), 44 states have call successors, (45) [2023-12-02 16:02:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 491 transitions. [2023-12-02 16:02:56,787 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 491 transitions. Word has length 63 [2023-12-02 16:02:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:02:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 491 transitions. [2023-12-02 16:02:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 31 states have (on average 1.096774193548387) internal successors, (34), 28 states have internal predecessors, (34), 12 states have call successors, (12), 9 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 16:02:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 491 transitions. [2023-12-02 16:02:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 16:02:56,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:02:56,790 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:02:56,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 16:02:56,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:02:56,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:02:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:02:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1818599389, now seen corresponding path program 1 times [2023-12-02 16:02:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:02:56,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799689711] [2023-12-02 16:02:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:02:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:02:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:02:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 16:02:57,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:02:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799689711] [2023-12-02 16:02:57,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799689711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:02:57,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836172389] [2023-12-02 16:02:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:02:57,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:02:57,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:02:57,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:02:57,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fc6aeed-1e15-40a1-88a3-2fb239443900/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:02:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:02:57,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:02:57,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:02:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:02:57,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:02:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:02:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836172389] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:02:57,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927569873] [2023-12-02 16:02:57,462 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2023-12-02 16:02:57,463 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:02:57,463 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:02:57,463 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:02:57,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:03:34,114 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 229 for LOIs [2023-12-02 16:03:34,277 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 241 for LOIs [2023-12-02 16:03:37,549 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 229 for LOIs [2023-12-02 16:03:37,713 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 239 for LOIs [2023-12-02 16:03:39,358 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 239 for LOIs [2023-12-02 16:03:42,652 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 230 for LOIs [2023-12-02 16:03:42,814 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 248 for LOIs [2023-12-02 16:03:44,118 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 221 for LOIs [2023-12-02 16:03:44,237 INFO L180 IcfgInterpreter]: Interpretation finished