./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/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_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/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_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:42,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:42,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:13:42,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:42,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:42,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:42,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:42,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:42,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:42,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:42,420 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:42,420 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:42,421 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:42,422 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:42,422 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:42,423 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:42,423 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:42,424 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:42,424 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:42,425 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:42,425 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:42,426 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:42,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:42,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:42,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:13:42,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:42,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:13:42,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:42,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:42,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:42,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:42,432 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:13:42,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:42,433 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:42,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:42,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:42,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:42,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:42,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:42,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:42,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:42,436 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:42,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:42,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:42,437 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:42,437 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:42,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:42,437 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_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2023-11-23 21:13:42,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:42,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:42,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:42,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:42,844 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:42,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2023-11-23 21:13:45,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:46,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:46,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2023-11-23 21:13:46,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/data/c4426b7b3/489cd6982d6b445494015c4dfa2c484c/FLAGb5d38a4ae [2023-11-23 21:13:46,419 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/data/c4426b7b3/489cd6982d6b445494015c4dfa2c484c [2023-11-23 21:13:46,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:46,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:46,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:46,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:46,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:46,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec76dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:46, skipping insertion in model container [2023-11-23 21:13:46,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:46" (1/1) ... [2023-11-23 21:13:46,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:47,297 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_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2023-11-23 21:13:47,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:47,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:47,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-23 21:13:47,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [168] [2023-11-23 21:13:47,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [754] [2023-11-23 21:13:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1126] [2023-11-23 21:13:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1492] [2023-11-23 21:13:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1698] [2023-11-23 21:13:47,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2095] [2023-11-23 21:13:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2112] [2023-11-23 21:13:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2378] [2023-11-23 21:13:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2387] [2023-11-23 21:13:47,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [3447] [2023-11-23 21:13:47,492 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_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2023-11-23 21:13:47,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:47,557 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:13:47,565 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:47,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47 WrapperNode [2023-11-23 21:13:47,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:47,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:47,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:47,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:47,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,772 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1316 [2023-11-23 21:13:47,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:47,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:47,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:47,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:47,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:47,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:47,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:47,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:47,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (1/1) ... [2023-11-23 21:13:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:47,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:48,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:48,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:48,173 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-23 21:13:48,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-23 21:13:48,174 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-23 21:13:48,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-23 21:13:48,175 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-23 21:13:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-23 21:13:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-23 21:13:48,176 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-23 21:13:48,176 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-23 21:13:48,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-23 21:13:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-23 21:13:48,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-23 21:13:48,178 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-23 21:13:48,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-23 21:13:48,181 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-23 21:13:48,181 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-23 21:13:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-23 21:13:48,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-23 21:13:48,182 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-23 21:13:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-23 21:13:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-23 21:13:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-23 21:13:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-23 21:13:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-23 21:13:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-23 21:13:48,184 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-23 21:13:48,184 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-23 21:13:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-23 21:13:48,185 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-23 21:13:48,185 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-23 21:13:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-23 21:13:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-23 21:13:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-23 21:13:48,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-23 21:13:48,186 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-23 21:13:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-23 21:13:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-23 21:13:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-23 21:13:48,187 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-23 21:13:48,187 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-23 21:13:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-23 21:13:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-23 21:13:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-23 21:13:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-23 21:13:48,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-23 21:13:48,188 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-23 21:13:48,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-23 21:13:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-23 21:13:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-23 21:13:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-23 21:13:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-23 21:13:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-23 21:13:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-23 21:13:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-23 21:13:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-23 21:13:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-23 21:13:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-23 21:13:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-23 21:13:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-23 21:13:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-23 21:13:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-23 21:13:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-23 21:13:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-23 21:13:48,194 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-23 21:13:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-23 21:13:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-23 21:13:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-23 21:13:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-23 21:13:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-23 21:13:48,204 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-23 21:13:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-23 21:13:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-23 21:13:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-23 21:13:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-23 21:13:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-23 21:13:48,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-23 21:13:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-23 21:13:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-23 21:13:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-23 21:13:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-23 21:13:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-23 21:13:48,206 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-23 21:13:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-23 21:13:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-23 21:13:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-23 21:13:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-23 21:13:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-23 21:13:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:48,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:48,550 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:49,797 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:50,525 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:50,525 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:13:50,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:50 BoogieIcfgContainer [2023-11-23 21:13:50,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:50,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:50,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:50,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:50,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:46" (1/3) ... [2023-11-23 21:13:50,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea37da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:50, skipping insertion in model container [2023-11-23 21:13:50,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:47" (2/3) ... [2023-11-23 21:13:50,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea37da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:50, skipping insertion in model container [2023-11-23 21:13:50,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:50" (3/3) ... [2023-11-23 21:13:50,536 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2023-11-23 21:13:50,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:50,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:50,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:50,629 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;@dfbe35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:50,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-23 21:13:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 21:13:50,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:50,663 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:50,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:50,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 484191683, now seen corresponding path program 1 times [2023-11-23 21:13:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:50,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080866924] [2023-11-23 21:13:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:51,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080866924] [2023-11-23 21:13:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080866924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:51,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:51,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216092450] [2023-11-23 21:13:51,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:51,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:51,508 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:51,876 INFO L93 Difference]: Finished difference Result 723 states and 997 transitions. [2023-11-23 21:13:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:13:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2023-11-23 21:13:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:51,907 INFO L225 Difference]: With dead ends: 723 [2023-11-23 21:13:51,907 INFO L226 Difference]: Without dead ends: 374 [2023-11-23 21:13:51,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:51,920 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:51,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1370 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-23 21:13:52,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-23 21:13:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-23 21:13:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2023-11-23 21:13:52,015 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 121 [2023-11-23 21:13:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:52,016 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2023-11-23 21:13:52,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2023-11-23 21:13:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 21:13:52,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:52,026 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:13:52,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:52,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1633703534, now seen corresponding path program 1 times [2023-11-23 21:13:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605717957] [2023-11-23 21:13:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:52,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605717957] [2023-11-23 21:13:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605717957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410866905] [2023-11-23 21:13:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:52,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:52,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:52,401 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:52,614 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2023-11-23 21:13:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:52,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2023-11-23 21:13:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:52,621 INFO L225 Difference]: With dead ends: 592 [2023-11-23 21:13:52,622 INFO L226 Difference]: Without dead ends: 376 [2023-11-23 21:13:52,626 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 21:13:52,627 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:52,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:13:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-23 21:13:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-11-23 21:13:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-23 21:13:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2023-11-23 21:13:52,672 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 127 [2023-11-23 21:13:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2023-11-23 21:13:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2023-11-23 21:13:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 21:13:52,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:52,681 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:13:52,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:52,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1340930158, now seen corresponding path program 1 times [2023-11-23 21:13:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:52,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5985722] [2023-11-23 21:13:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:52,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:52,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5985722] [2023-11-23 21:13:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5985722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:52,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:52,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:52,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449336205] [2023-11-23 21:13:52,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:52,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:52,819 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:52,977 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2023-11-23 21:13:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:52,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2023-11-23 21:13:52,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:52,983 INFO L225 Difference]: With dead ends: 751 [2023-11-23 21:13:52,984 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 21:13:52,986 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 21:13:52,987 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 84 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:52,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 902 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:13:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 21:13:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2023-11-23 21:13:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2023-11-23 21:13:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2023-11-23 21:13:53,033 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 132 [2023-11-23 21:13:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:53,034 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2023-11-23 21:13:53,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 21:13:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2023-11-23 21:13:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 21:13:53,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:53,039 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:13:53,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:53,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1476052526, now seen corresponding path program 1 times [2023-11-23 21:13:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587826809] [2023-11-23 21:13:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:53,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:53,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587826809] [2023-11-23 21:13:53,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587826809] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:13:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377112233] [2023-11-23 21:13:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:53,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:13:53,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:53,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:13:53,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_034e8d53-5aeb-4f6e-addf-d9122cf4b7ee/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:13:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:53,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:13:53,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:13:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:53,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:13:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:13:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377112233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:13:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507970108] [2023-11-23 21:13:53,932 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-11-23 21:13:53,932 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:13:53,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:13:53,945 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:13:53,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs