./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product24.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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/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 b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:05,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:05,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:35:06,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:06,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:06,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:06,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:06,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:06,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:06,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:06,070 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:06,071 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:06,072 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:06,074 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:06,074 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:06,075 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:06,075 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:06,075 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:06,076 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:06,077 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:06,077 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:06,078 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:06,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:06,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:06,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:35:06,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:06,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:35:06,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:06,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:06,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:06,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:06,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:35:06,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:06,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:06,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:06,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:06,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:06,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:06,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:06,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:06,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:06,087 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:06,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:06,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:06,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:06,089 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:06,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:06,089 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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b453d764da4cb622a1911439b5a79bae9155e32b42a83c5d4472e5a8d62a8d39 [2023-11-23 20:35:06,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:06,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:06,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:06,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:06,438 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:06,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2023-11-23 20:35:09,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:10,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:10,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c [2023-11-23 20:35:10,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/data/febe1145e/304f7b1cd7504fc79d40d5768a625502/FLAG3b4e73075 [2023-11-23 20:35:10,145 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/data/febe1145e/304f7b1cd7504fc79d40d5768a625502 [2023-11-23 20:35:10,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:10,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:10,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:10,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:10,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:10,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b7d46e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10, skipping insertion in model container [2023-11-23 20:35:10,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,296 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:10,866 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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2023-11-23 20:35:11,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:11,125 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:11,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-11-23 20:35:11,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [460] [2023-11-23 20:35:11,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [689] [2023-11-23 20:35:11,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1036] [2023-11-23 20:35:11,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1332] [2023-11-23 20:35:11,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1341] [2023-11-23 20:35:11,142 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1707] [2023-11-23 20:35:11,142 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1803] [2023-11-23 20:35:11,142 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1822] [2023-11-23 20:35:11,143 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1857] [2023-11-23 20:35:11,143 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2922] [2023-11-23 20:35:11,189 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_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/sv-benchmarks/c/product-lines/email_spec0_product24.cil.c[25283,25296] [2023-11-23 20:35:11,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:11,281 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:11,291 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:11,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11 WrapperNode [2023-11-23 20:35:11,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:11,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:11,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:11,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:11,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,406 INFO L138 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1057 [2023-11-23 20:35:11,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:11,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:11,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:11,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:11,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:11,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:11,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:11,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:11,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (1/1) ... [2023-11-23 20:35:11,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:11,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:11,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:11,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 20:35:11,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 20:35:11,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 20:35:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 20:35:11,678 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 20:35:11,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 20:35:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 20:35:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 20:35:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-23 20:35:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-23 20:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 20:35:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 20:35:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 20:35:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 20:35:11,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 20:35:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-23 20:35:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-23 20:35:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 20:35:11,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 20:35:11,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:11,690 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-23 20:35:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-23 20:35:11,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 20:35:11,690 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 20:35:11,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 20:35:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 20:35:11,691 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 20:35:11,691 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 20:35:11,691 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 20:35:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 20:35:11,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 20:35:11,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 20:35:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-23 20:35:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-23 20:35:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 20:35:11,693 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 20:35:11,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:12,024 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:12,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:13,139 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:13,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:13,843 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:35:13,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:13 BoogieIcfgContainer [2023-11-23 20:35:13,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:13,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:13,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:13,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:13,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:10" (1/3) ... [2023-11-23 20:35:13,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a43b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:13, skipping insertion in model container [2023-11-23 20:35:13,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:11" (2/3) ... [2023-11-23 20:35:13,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a43b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:13, skipping insertion in model container [2023-11-23 20:35:13,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:13" (3/3) ... [2023-11-23 20:35:13,856 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2023-11-23 20:35:13,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:13,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:35:13,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:13,979 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;@484f16de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:13,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:35:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-23 20:35:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 20:35:14,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:14,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-23 20:35:14,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:14,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash 538089134, now seen corresponding path program 1 times [2023-11-23 20:35:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:14,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825259341] [2023-11-23 20:35:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:14,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:14,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825259341] [2023-11-23 20:35:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825259341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:14,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:14,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473974249] [2023-11-23 20:35:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:14,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:35:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:35:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:14,769 INFO L87 Difference]: Start difference. First operand has 161 states, 96 states have (on average 1.34375) internal successors, (129), 98 states have internal predecessors, (129), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:14,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:14,983 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2023-11-23 20:35:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:35:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2023-11-23 20:35:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:15,007 INFO L225 Difference]: With dead ends: 239 [2023-11-23 20:35:15,007 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 20:35:15,013 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 20:35:15,018 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:15,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 20:35:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-23 20:35:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-23 20:35:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 214 transitions. [2023-11-23 20:35:15,093 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 214 transitions. Word has length 66 [2023-11-23 20:35:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:15,095 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 214 transitions. [2023-11-23 20:35:15,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 214 transitions. [2023-11-23 20:35:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:35:15,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:15,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-23 20:35:15,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:15,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:15,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1473582895, now seen corresponding path program 1 times [2023-11-23 20:35:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823491664] [2023-11-23 20:35:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:15,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:15,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823491664] [2023-11-23 20:35:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823491664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:15,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:15,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188592303] [2023-11-23 20:35:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:15,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:15,510 INFO L87 Difference]: Start difference. First operand 158 states and 214 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:15,669 INFO L93 Difference]: Finished difference Result 235 states and 308 transitions. [2023-11-23 20:35:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 67 [2023-11-23 20:35:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:15,679 INFO L225 Difference]: With dead ends: 235 [2023-11-23 20:35:15,682 INFO L226 Difference]: Without dead ends: 160 [2023-11-23 20:35:15,684 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 20:35:15,688 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:15,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-23 20:35:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-23 20:35:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 97 states have internal predecessors, (125), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-23 20:35:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 216 transitions. [2023-11-23 20:35:15,747 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 216 transitions. Word has length 67 [2023-11-23 20:35:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:15,752 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 216 transitions. [2023-11-23 20:35:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 216 transitions. [2023-11-23 20:35:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 20:35:15,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:15,758 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] [2023-11-23 20:35:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:35:15,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:15,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1601975179, now seen corresponding path program 1 times [2023-11-23 20:35:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866332783] [2023-11-23 20:35:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:16,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866332783] [2023-11-23 20:35:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866332783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436871772] [2023-11-23 20:35:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:16,057 INFO L87 Difference]: Start difference. First operand 160 states and 216 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:16,230 INFO L93 Difference]: Finished difference Result 350 states and 491 transitions. [2023-11-23 20:35:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:16,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 72 [2023-11-23 20:35:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:16,235 INFO L225 Difference]: With dead ends: 350 [2023-11-23 20:35:16,235 INFO L226 Difference]: Without dead ends: 208 [2023-11-23 20:35:16,237 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 20:35:16,239 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:16,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 375 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-23 20:35:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2023-11-23 20:35:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.390625) internal successors, (178), 129 states have internal predecessors, (178), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-23 20:35:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2023-11-23 20:35:16,296 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 72 [2023-11-23 20:35:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:16,298 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2023-11-23 20:35:16,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 20:35:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2023-11-23 20:35:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 20:35:16,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:16,308 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] [2023-11-23 20:35:16,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:35:16,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:16,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1859946924, now seen corresponding path program 1 times [2023-11-23 20:35:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598507180] [2023-11-23 20:35:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:16,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598507180] [2023-11-23 20:35:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598507180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648770353] [2023-11-23 20:35:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:16,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:16,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f3e7ebb-3ef9-4328-85d2-5dc63d9a8bf8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:35:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:35:17,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:17,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:17,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 20:35:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648770353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:17,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1222669361] [2023-11-23 20:35:17,336 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-11-23 20:35:17,336 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:17,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:17,353 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:17,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs