./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a235b81518d1466c5f4be9b22c3eaea6ff575e28236a3798a0ed19e321bfc6e0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:06,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:06,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:50:06,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:06,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:06,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:06,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:06,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:06,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:06,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:06,979 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:06,980 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:06,980 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:06,981 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:50:06,982 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:06,982 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:06,983 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:50:06,984 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:50:06,984 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:06,985 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:50:06,985 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:50:06,992 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:50:06,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:06,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:50:06,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:50:06,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:50:06,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:50:06,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:06,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:50:06,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:06,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:50:06,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:50:07,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:50:07,001 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:07,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:07,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:07,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:07,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:07,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:07,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:50:07,003 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:50:07,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:50:07,004 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:50:07,004 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:07,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:07,005 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_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a235b81518d1466c5f4be9b22c3eaea6ff575e28236a3798a0ed19e321bfc6e0 [2023-11-19 04:50:07,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:07,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:07,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:07,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:07,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:07,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/email_spec3_product35.cil.c [2023-11-19 04:50:10,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:11,235 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:11,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/sv-benchmarks/c/product-lines/email_spec3_product35.cil.c [2023-11-19 04:50:11,266 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/data/72a23d903/6310e3ce49f94b9b9062d442c8b04343/FLAG73ebcf6e9 [2023-11-19 04:50:11,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/data/72a23d903/6310e3ce49f94b9b9062d442c8b04343 [2023-11-19 04:50:11,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:11,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:11,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:11,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:11,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:11,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:11" (1/1) ... [2023-11-19 04:50:11,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391e5ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:11, skipping insertion in model container [2023-11-19 04:50:11,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:11" (1/1) ... [2023-11-19 04:50:11,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:12,322 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_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/sv-benchmarks/c/product-lines/email_spec3_product35.cil.c[61781,61794] [2023-11-19 04:50:12,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:12,364 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:12,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-19 04:50:12,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [392] [2023-11-19 04:50:12,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [854] [2023-11-19 04:50:12,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [913] [2023-11-19 04:50:12,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1973] [2023-11-19 04:50:12,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2372] [2023-11-19 04:50:12,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2507] [2023-11-19 04:50:12,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2873] [2023-11-19 04:50:12,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2908] [2023-11-19 04:50:12,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2925] [2023-11-19 04:50:12,387 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2934] [2023-11-19 04:50:12,515 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_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/sv-benchmarks/c/product-lines/email_spec3_product35.cil.c[61781,61794] [2023-11-19 04:50:12,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:12,576 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:12,585 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:12,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12 WrapperNode [2023-11-19 04:50:12,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:12,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:12,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:12,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:12,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,758 INFO L138 Inliner]: procedures = 138, calls = 256, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1190 [2023-11-19 04:50:12,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:12,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:12,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:12,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:12,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:12,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:12,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:12,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:12,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (1/1) ... [2023-11-19 04:50:12,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:12,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:12,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-19 04:50:13,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-19 04:50:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-19 04:50:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-19 04:50:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-19 04:50:13,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-19 04:50:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-19 04:50:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-19 04:50:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-19 04:50:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-19 04:50:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-19 04:50:13,005 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-19 04:50:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-11-19 04:50:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-11-19 04:50:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-19 04:50:13,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-19 04:50:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-19 04:50:13,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-19 04:50:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-19 04:50:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-19 04:50:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-19 04:50:13,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-19 04:50:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-19 04:50:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-19 04:50:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-19 04:50:13,012 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-19 04:50:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 04:50:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-19 04:50:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-19 04:50:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-19 04:50:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-19 04:50:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-19 04:50:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-19 04:50:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-19 04:50:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-19 04:50:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-19 04:50:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-19 04:50:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-19 04:50:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-19 04:50:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-19 04:50:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-19 04:50:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-19 04:50:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-19 04:50:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-19 04:50:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-19 04:50:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-19 04:50:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-19 04:50:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-19 04:50:13,017 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-19 04:50:13,018 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-19 04:50:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-19 04:50:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-19 04:50:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-19 04:50:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-19 04:50:13,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-19 04:50:13,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-19 04:50:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-19 04:50:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:50:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-19 04:50:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-19 04:50:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-19 04:50:13,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-19 04:50:13,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:13,349 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:13,352 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:14,826 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:15,731 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:15,732 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:50:15,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:15 BoogieIcfgContainer [2023-11-19 04:50:15,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:15,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:15,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:15,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:15,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:11" (1/3) ... [2023-11-19 04:50:15,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac4330e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:15, skipping insertion in model container [2023-11-19 04:50:15,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:12" (2/3) ... [2023-11-19 04:50:15,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac4330e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:15, skipping insertion in model container [2023-11-19 04:50:15,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:15" (3/3) ... [2023-11-19 04:50:15,751 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product35.cil.c [2023-11-19 04:50:15,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:15,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:50:15,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:15,882 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;@5e519f12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:15,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:50:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 140 states have (on average 1.2857142857142858) internal successors, (180), 147 states have internal predecessors, (180), 80 states have call successors, (80), 30 states have call predecessors, (80), 30 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-19 04:50:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 04:50:15,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:15,927 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:15,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:15,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash -59843704, now seen corresponding path program 1 times [2023-11-19 04:50:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173206740] [2023-11-19 04:50:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:15,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:50:16,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173206740] [2023-11-19 04:50:16,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173206740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:16,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:16,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555484855] [2023-11-19 04:50:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:50:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:50:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:50:16,638 INFO L87 Difference]: Start difference. First operand has 252 states, 140 states have (on average 1.2857142857142858) internal successors, (180), 147 states have internal predecessors, (180), 80 states have call successors, (80), 30 states have call predecessors, (80), 30 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:50:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:16,930 INFO L93 Difference]: Finished difference Result 411 states and 551 transitions. [2023-11-19 04:50:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:50:16,940 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2023-11-19 04:50:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:16,962 INFO L225 Difference]: With dead ends: 411 [2023-11-19 04:50:16,962 INFO L226 Difference]: Without dead ends: 248 [2023-11-19 04:50:16,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:50:16,974 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:16,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:50:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-19 04:50:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-11-19 04:50:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 138 states have (on average 1.2608695652173914) internal successors, (174), 143 states have internal predecessors, (174), 80 states have call successors, (80), 30 states have call predecessors, (80), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 04:50:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 331 transitions. [2023-11-19 04:50:17,058 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 331 transitions. Word has length 90 [2023-11-19 04:50:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 331 transitions. [2023-11-19 04:50:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 04:50:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 331 transitions. [2023-11-19 04:50:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 04:50:17,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:17,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:50:17,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 461699257, now seen corresponding path program 1 times [2023-11-19 04:50:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187486828] [2023-11-19 04:50:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:50:17,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:17,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187486828] [2023-11-19 04:50:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187486828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340007750] [2023-11-19 04:50:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:17,573 INFO L87 Difference]: Start difference. First operand 248 states and 331 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 04:50:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:17,782 INFO L93 Difference]: Finished difference Result 406 states and 532 transitions. [2023-11-19 04:50:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:17,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 102 [2023-11-19 04:50:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:17,793 INFO L225 Difference]: With dead ends: 406 [2023-11-19 04:50:17,793 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 04:50:17,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:17,803 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:17,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 567 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:50:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 04:50:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-11-19 04:50:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 145 states have internal predecessors, (176), 80 states have call successors, (80), 30 states have call predecessors, (80), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 04:50:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 333 transitions. [2023-11-19 04:50:17,852 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 333 transitions. Word has length 102 [2023-11-19 04:50:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:17,853 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 333 transitions. [2023-11-19 04:50:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 04:50:17,854 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 333 transitions. [2023-11-19 04:50:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 04:50:17,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:17,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:17,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:50:17,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:17,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:17,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1674588981, now seen corresponding path program 1 times [2023-11-19 04:50:17,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:17,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170813563] [2023-11-19 04:50:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:17,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:50:18,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170813563] [2023-11-19 04:50:18,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170813563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:18,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657040715] [2023-11-19 04:50:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:50:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:18,142 INFO L87 Difference]: Start difference. First operand 250 states and 333 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 04:50:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:18,328 INFO L93 Difference]: Finished difference Result 535 states and 733 transitions. [2023-11-19 04:50:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2023-11-19 04:50:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:18,333 INFO L225 Difference]: With dead ends: 535 [2023-11-19 04:50:18,333 INFO L226 Difference]: Without dead ends: 303 [2023-11-19 04:50:18,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:18,337 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 59 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:18,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 586 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:50:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-19 04:50:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 298. [2023-11-19 04:50:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 174 states have (on average 1.3275862068965518) internal successors, (231), 179 states have internal predecessors, (231), 94 states have call successors, (94), 30 states have call predecessors, (94), 29 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-19 04:50:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 416 transitions. [2023-11-19 04:50:18,387 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 416 transitions. Word has length 107 [2023-11-19 04:50:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:18,388 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 416 transitions. [2023-11-19 04:50:18,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-19 04:50:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 416 transitions. [2023-11-19 04:50:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 04:50:18,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:18,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:18,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:50:18,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:50:18,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash 718859858, now seen corresponding path program 1 times [2023-11-19 04:50:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:50:18,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700291790] [2023-11-19 04:50:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:50:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:50:18,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:50:18,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700291790] [2023-11-19 04:50:18,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700291790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:50:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405824643] [2023-11-19 04:50:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:18,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:50:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:18,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:50:18,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bedd49e-8b30-4b61-b2a8-2cbc9b2530e8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:50:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:19,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:19,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:50:19,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:50:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:50:19,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405824643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:50:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [727167286] [2023-11-19 04:50:19,382 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2023-11-19 04:50:19,382 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:50:19,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:50:19,394 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:50:19,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs