./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire --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 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:19,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:19,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:34:19,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:19,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:19,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:19,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:19,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:19,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:19,605 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:19,606 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:19,607 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:19,608 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:19,610 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:19,610 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:19,611 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:19,611 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:19,612 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:19,613 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:19,613 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:19,614 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:19,615 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:19,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:19,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:19,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:34:19,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:19,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:34:19,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:19,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:19,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:19,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:19,622 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:34:19,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:19,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:19,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:19,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:19,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:19,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:19,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:19,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:19,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:19,625 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:19,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:19,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:19,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:19,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:19,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:19,628 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_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 [2023-11-23 20:34:19,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:19,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:19,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:19,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:19,992 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:19,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2023-11-23 20:34:23,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:23,602 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:23,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2023-11-23 20:34:23,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/data/0ce4e1fb3/8ca8d336c5354271951f3ee43acad574/FLAGdf0bc599e [2023-11-23 20:34:23,665 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/data/0ce4e1fb3/8ca8d336c5354271951f3ee43acad574 [2023-11-23 20:34:23,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:23,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:23,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:23,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:23,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:23,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:23" (1/1) ... [2023-11-23 20:34:23,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86a683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:23, skipping insertion in model container [2023-11-23 20:34:23,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:23" (1/1) ... [2023-11-23 20:34:23,800 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:24,583 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_adff2996-7fa9-435a-85ac-549400e5756e/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2023-11-23 20:34:24,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:24,722 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:24,735 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2023-11-23 20:34:24,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1128] [2023-11-23 20:34:24,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1494] [2023-11-23 20:34:24,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1512] [2023-11-23 20:34:24,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [1561] [2023-11-23 20:34:24,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1592] [2023-11-23 20:34:24,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1739] [2023-11-23 20:34:24,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2019] [2023-11-23 20:34:24,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2232] [2023-11-23 20:34:24,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2241] [2023-11-23 20:34:24,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2643] [2023-11-23 20:34:24,886 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_adff2996-7fa9-435a-85ac-549400e5756e/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2023-11-23 20:34:24,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:24,940 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:24,949 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:24,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24 WrapperNode [2023-11-23 20:34:24,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:24,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:24,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:24,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:24,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:24,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,064 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 865 [2023-11-23 20:34:25,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:25,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:25,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:25,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:25,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:25,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:25,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:25,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:25,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (1/1) ... [2023-11-23 20:34:25,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:25,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:25,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-23 20:34:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-23 20:34:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-23 20:34:25,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-23 20:34:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-23 20:34:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-23 20:34:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 20:34:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 20:34:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 20:34:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 20:34:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 20:34:25,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 20:34:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 20:34:25,343 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 20:34:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-23 20:34:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-23 20:34:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-23 20:34:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-23 20:34:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 20:34:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 20:34:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 20:34:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 20:34:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 20:34:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 20:34:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 20:34:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-23 20:34:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-23 20:34:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-23 20:34:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-23 20:34:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 20:34:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 20:34:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 20:34:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 20:34:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 20:34:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 20:34:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-23 20:34:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-23 20:34:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 20:34:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 20:34:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-23 20:34:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-23 20:34:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 20:34:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 20:34:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 20:34:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 20:34:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:25,618 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:25,621 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:26,638 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:27,225 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:27,227 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:27,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:27 BoogieIcfgContainer [2023-11-23 20:34:27,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:27,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:27,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:27,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:27,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:23" (1/3) ... [2023-11-23 20:34:27,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f73483c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:27, skipping insertion in model container [2023-11-23 20:34:27,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:24" (2/3) ... [2023-11-23 20:34:27,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f73483c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:27, skipping insertion in model container [2023-11-23 20:34:27,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:27" (3/3) ... [2023-11-23 20:34:27,242 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product28.cil.c [2023-11-23 20:34:27,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:27,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:27,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:27,355 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;@2b9605e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:27,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-23 20:34:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 20:34:27,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:27,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:27,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:27,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 399768710, now seen corresponding path program 1 times [2023-11-23 20:34:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136424611] [2023-11-23 20:34:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:27,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136424611] [2023-11-23 20:34:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136424611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:27,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:27,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428242602] [2023-11-23 20:34:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:34:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:34:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:34:28,063 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:28,279 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2023-11-23 20:34:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:34:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2023-11-23 20:34:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:28,304 INFO L225 Difference]: With dead ends: 277 [2023-11-23 20:34:28,305 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 20:34:28,317 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 [2023-11-23 20:34:28,322 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:28,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:34:28,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 20:34:28,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-23 20:34:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-23 20:34:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2023-11-23 20:34:28,409 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2023-11-23 20:34:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:28,411 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2023-11-23 20:34:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2023-11-23 20:34:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 20:34:28,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:28,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:34:28,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:28,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 310188386, now seen corresponding path program 1 times [2023-11-23 20:34:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:28,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681262083] [2023-11-23 20:34:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:28,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681262083] [2023-11-23 20:34:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681262083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:28,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:28,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747002223] [2023-11-23 20:34:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:28,675 INFO L87 Difference]: Start difference. First operand 177 states and 235 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:28,841 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2023-11-23 20:34:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:28,850 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2023-11-23 20:34:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:28,857 INFO L225 Difference]: With dead ends: 273 [2023-11-23 20:34:28,857 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 20:34:28,859 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 [2023-11-23 20:34:28,860 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:28,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:34:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 20:34:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-23 20:34:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-23 20:34:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2023-11-23 20:34:28,893 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2023-11-23 20:34:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:28,894 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2023-11-23 20:34:28,894 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, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2023-11-23 20:34:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:34:28,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:28,907 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, 1, 1, 1, 1] [2023-11-23 20:34:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:34:28,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:28,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -419436382, now seen corresponding path program 1 times [2023-11-23 20:34:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548975910] [2023-11-23 20:34:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:29,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548975910] [2023-11-23 20:34:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548975910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:29,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:29,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602788989] [2023-11-23 20:34:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:29,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:34:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:29,184 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:29,391 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2023-11-23 20:34:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:29,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2023-11-23 20:34:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:29,395 INFO L225 Difference]: With dead ends: 388 [2023-11-23 20:34:29,395 INFO L226 Difference]: Without dead ends: 227 [2023-11-23 20:34:29,397 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 [2023-11-23 20:34:29,398 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 57 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:29,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 407 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:34:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-23 20:34:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2023-11-23 20:34:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 20:34:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2023-11-23 20:34:29,448 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2023-11-23 20:34:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:29,450 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2023-11-23 20:34:29,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 20:34:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2023-11-23 20:34:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 20:34:29,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:29,457 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, 1, 1, 1, 1, 1] [2023-11-23 20:34:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:34:29,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:29,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1321006886, now seen corresponding path program 1 times [2023-11-23 20:34:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555985848] [2023-11-23 20:34:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:29,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555985848] [2023-11-23 20:34:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555985848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:34:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894486386] [2023-11-23 20:34:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:29,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:29,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adff2996-7fa9-435a-85ac-549400e5756e/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:34:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:30,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:34:30,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:30,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:34:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:34:30,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894486386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:34:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [870833940] [2023-11-23 20:34:30,339 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2023-11-23 20:34:30,339 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:34:30,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:34:30,355 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:34:30,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs