./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/stty-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/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_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/stty-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/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 64bit --witnessprinter.graph.data.programhash 407efb5d110f0d8a5006d45a10a4353022c10a59bc24e54b714ee2eb1689c810 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:46,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:46,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:21:46,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:46,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:46,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:46,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:46,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:46,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:46,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:46,611 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:46,611 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:46,612 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:46,614 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:46,614 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:46,615 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:46,615 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:46,615 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:46,616 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:46,616 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:46,617 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:46,618 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:46,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:46,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:46,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:46,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:46,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:46,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:46,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:46,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:46,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:46,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:46,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:46,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:46,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:46,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:46,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:46,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:46,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:46,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:46,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:46,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:46,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:46,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:46,628 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 407efb5d110f0d8a5006d45a10a4353022c10a59bc24e54b714ee2eb1689c810 [2023-11-23 21:21:46,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:46,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:46,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:46,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:46,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:46,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/busybox-1.22.0/stty-2.i [2023-11-23 21:21:50,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:50,862 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:50,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i [2023-11-23 21:21:50,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/data/e8051c7bd/4944bf6244054916981aacece76fec9b/FLAG0d21ee3df [2023-11-23 21:21:50,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/data/e8051c7bd/4944bf6244054916981aacece76fec9b [2023-11-23 21:21:50,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:50,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:50,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:50,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:50,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:50,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:50" (1/1) ... [2023-11-23 21:21:50,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f85992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:50, skipping insertion in model container [2023-11-23 21:21:50,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:50" (1/1) ... [2023-11-23 21:21:51,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:53,184 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[132222,132235] [2023-11-23 21:21:53,195 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[132302,132315] [2023-11-23 21:21:53,202 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133183,133196] [2023-11-23 21:21:53,202 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133263,133276] [2023-11-23 21:21:53,204 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133537,133550] [2023-11-23 21:21:53,205 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133633,133646] [2023-11-23 21:21:53,206 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133802,133815] [2023-11-23 21:21:53,207 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133890,133903] [2023-11-23 21:21:53,208 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134070,134083] [2023-11-23 21:21:53,209 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134158,134171] [2023-11-23 21:21:53,210 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134417,134430] [2023-11-23 21:21:53,211 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134513,134526] [2023-11-23 21:21:53,212 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134721,134734] [2023-11-23 21:21:53,213 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134809,134822] [2023-11-23 21:21:53,214 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135109,135122] [2023-11-23 21:21:53,215 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135213,135226] [2023-11-23 21:21:53,218 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135727,135740] [2023-11-23 21:21:53,218 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135831,135844] [2023-11-23 21:21:53,220 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[136277,136290] [2023-11-23 21:21:53,221 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[136389,136402] [2023-11-23 21:21:53,234 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[139562,139575] [2023-11-23 21:21:53,250 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[143855,143868] [2023-11-23 21:21:53,251 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[143935,143948] [2023-11-23 21:21:53,252 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144229,144242] [2023-11-23 21:21:53,253 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144309,144322] [2023-11-23 21:21:53,255 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144543,144556] [2023-11-23 21:21:53,255 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144631,144644] [2023-11-23 21:21:53,257 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144996,145009] [2023-11-23 21:21:53,258 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[145092,145105] [2023-11-23 21:21:53,267 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[148088,148101] [2023-11-23 21:21:53,427 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[175852,175865] [2023-11-23 21:21:53,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:53,596 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:53,694 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[132222,132235] [2023-11-23 21:21:53,694 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[132302,132315] [2023-11-23 21:21:53,697 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133183,133196] [2023-11-23 21:21:53,698 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133263,133276] [2023-11-23 21:21:53,699 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133537,133550] [2023-11-23 21:21:53,700 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133633,133646] [2023-11-23 21:21:53,701 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133802,133815] [2023-11-23 21:21:53,701 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[133890,133903] [2023-11-23 21:21:53,702 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134070,134083] [2023-11-23 21:21:53,705 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134158,134171] [2023-11-23 21:21:53,706 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134417,134430] [2023-11-23 21:21:53,707 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134513,134526] [2023-11-23 21:21:53,708 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134721,134734] [2023-11-23 21:21:53,709 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[134809,134822] [2023-11-23 21:21:53,710 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135109,135122] [2023-11-23 21:21:53,710 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135213,135226] [2023-11-23 21:21:53,712 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135727,135740] [2023-11-23 21:21:53,713 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[135831,135844] [2023-11-23 21:21:53,714 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[136277,136290] [2023-11-23 21:21:53,715 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[136389,136402] [2023-11-23 21:21:53,723 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[139562,139575] [2023-11-23 21:21:53,740 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[143855,143868] [2023-11-23 21:21:53,741 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[143935,143948] [2023-11-23 21:21:53,742 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144229,144242] [2023-11-23 21:21:53,743 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144309,144322] [2023-11-23 21:21:53,743 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144543,144556] [2023-11-23 21:21:53,744 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144631,144644] [2023-11-23 21:21:53,746 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[144996,145009] [2023-11-23 21:21:53,747 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[145092,145105] [2023-11-23 21:21:53,757 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[148088,148101] [2023-11-23 21:21:53,842 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_4f494cfc-61a7-4482-a141-13c2b8a194d0/sv-benchmarks/c/busybox-1.22.0/stty-2.i[175852,175865] [2023-11-23 21:21:53,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:54,175 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,176 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,176 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,176 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,176 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,176 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,177 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,177 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,177 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,177 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:21:54,185 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:54,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54 WrapperNode [2023-11-23 21:21:54,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:54,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:54,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:54,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:54,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,527 INFO L138 Inliner]: procedures = 676, calls = 2257, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4351 [2023-11-23 21:21:54,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:54,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:54,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:54,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:54,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:54,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:54,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:54,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:54,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (1/1) ... [2023-11-23 21:21:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:54,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:54,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:54,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 21:21:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-23 21:21:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-23 21:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-23 21:21:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-23 21:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-23 21:21:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-23 21:21:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-23 21:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-23 21:21:54,924 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-23 21:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 21:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:21:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-23 21:21:54,925 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-23 21:21:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-23 21:21:54,925 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-23 21:21:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:21:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 21:21:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 21:21:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-23 21:21:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-23 21:21:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-23 21:21:54,926 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-23 21:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-23 21:21:54,927 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-23 21:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:21:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-23 21:21:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-23 21:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 21:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 21:21:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-23 21:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-23 21:21:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-23 21:21:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-23 21:21:54,929 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-23 21:21:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 21:21:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 21:21:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-23 21:21:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-23 21:21:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-23 21:21:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-23 21:21:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-23 21:21:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-23 21:21:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-23 21:21:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-23 21:21:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-23 21:21:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-23 21:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-23 21:21:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-23 21:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:21:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:21:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:21:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:21:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:21:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-23 21:21:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-23 21:21:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:21:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-23 21:21:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-23 21:21:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:21:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-23 21:21:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-23 21:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-23 21:21:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-23 21:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-23 21:21:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-23 21:21:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-23 21:21:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-23 21:21:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-23 21:21:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-23 21:21:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-23 21:21:54,937 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-23 21:21:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-23 21:21:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:21:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-23 21:21:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-23 21:21:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-23 21:21:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-23 21:21:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-23 21:21:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-23 21:21:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 21:21:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 21:21:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 21:21:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-23 21:21:54,940 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-23 21:21:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:55,602 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:55,607 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:59,896 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:02,474 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:02,474 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-23 21:22:02,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:02 BoogieIcfgContainer [2023-11-23 21:22:02,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:02,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:02,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:02,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:02,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:50" (1/3) ... [2023-11-23 21:22:02,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dce490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:02, skipping insertion in model container [2023-11-23 21:22:02,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:54" (2/3) ... [2023-11-23 21:22:02,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dce490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:02, skipping insertion in model container [2023-11-23 21:22:02,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:02" (3/3) ... [2023-11-23 21:22:02,486 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-2.i [2023-11-23 21:22:02,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:02,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-11-23 21:22:02,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:02,591 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;@3927f4bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:02,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-23 21:22:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 671 states, 488 states have (on average 1.5163934426229508) internal successors, (740), 532 states have internal predecessors, (740), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-23 21:22:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:22:02,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:02,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:02,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting get_ptr_to_tcflagErr0ASSERT_VIOLATIONERROR_FUNCTION === [set_control_char_or_dieErr0ASSERT_VIOLATIONERROR_FUNCTION, wrapfErr0ASSERT_VIOLATIONERROR_FUNCTION, set_modeErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2023-11-23 21:22:02,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -263505190, now seen corresponding path program 1 times [2023-11-23 21:22:02,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:02,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246688932] [2023-11-23 21:22:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:03,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246688932] [2023-11-23 21:22:03,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246688932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:03,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:03,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:03,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660361329] [2023-11-23 21:22:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:03,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:03,982 INFO L87 Difference]: Start difference. First operand has 671 states, 488 states have (on average 1.5163934426229508) internal successors, (740), 532 states have internal predecessors, (740), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:22:06,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:08,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:09,034 INFO L93 Difference]: Finished difference Result 1324 states and 1994 transitions. [2023-11-23 21:22:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2023-11-23 21:22:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:09,056 INFO L225 Difference]: With dead ends: 1324 [2023-11-23 21:22:09,056 INFO L226 Difference]: Without dead ends: 602 [2023-11-23 21:22:09,071 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 21:22:09,074 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 0 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:09,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1560 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 21:22:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-11-23 21:22:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2023-11-23 21:22:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 447 states have (on average 1.3803131991051454) internal successors, (617), 487 states have internal predecessors, (617), 92 states have call successors, (92), 32 states have call predecessors, (92), 32 states have return successors, (91), 87 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-23 21:22:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 800 transitions. [2023-11-23 21:22:09,167 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 800 transitions. Word has length 51 [2023-11-23 21:22:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:09,167 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 800 transitions. [2023-11-23 21:22:09,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:22:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 800 transitions. [2023-11-23 21:22:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:22:09,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:09,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:09,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:09,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting get_ptr_to_tcflagErr0ASSERT_VIOLATIONERROR_FUNCTION === [set_control_char_or_dieErr0ASSERT_VIOLATIONERROR_FUNCTION, wrapfErr0ASSERT_VIOLATIONERROR_FUNCTION, set_modeErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2023-11-23 21:22:09,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1442860040, now seen corresponding path program 1 times [2023-11-23 21:22:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:09,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344832448] [2023-11-23 21:22:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:10,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344832448] [2023-11-23 21:22:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344832448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251094418] [2023-11-23 21:22:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:10,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:10,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:10,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:10,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:11,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:22:11,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:22:11,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251094418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:22:11,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39011289] [2023-11-23 21:22:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:11,387 INFO L87 Difference]: Start difference. First operand 602 states and 800 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:22:14,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:16,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:16,616 INFO L93 Difference]: Finished difference Result 604 states and 804 transitions. [2023-11-23 21:22:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2023-11-23 21:22:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:16,623 INFO L225 Difference]: With dead ends: 604 [2023-11-23 21:22:16,623 INFO L226 Difference]: Without dead ends: 602 [2023-11-23 21:22:16,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:16,625 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 3 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:16,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1384 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 21:22:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-11-23 21:22:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2023-11-23 21:22:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 446 states have (on average 1.3789237668161436) internal successors, (615), 485 states have internal predecessors, (615), 92 states have call successors, (92), 32 states have call predecessors, (92), 32 states have return successors, (91), 87 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-23 21:22:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 798 transitions. [2023-11-23 21:22:16,687 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 798 transitions. Word has length 55 [2023-11-23 21:22:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:16,688 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 798 transitions. [2023-11-23 21:22:16,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 21:22:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 798 transitions. [2023-11-23 21:22:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:22:16,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:16,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:16,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:16,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:16,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting set_control_char_or_dieErr0ASSERT_VIOLATIONERROR_FUNCTION === [set_control_char_or_dieErr0ASSERT_VIOLATIONERROR_FUNCTION, wrapfErr0ASSERT_VIOLATIONERROR_FUNCTION, set_modeErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2023-11-23 21:22:16,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1764801583, now seen corresponding path program 1 times [2023-11-23 21:22:16,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:16,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496363886] [2023-11-23 21:22:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:22:17,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496363886] [2023-11-23 21:22:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496363886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22829849] [2023-11-23 21:22:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:17,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:17,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:17,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f494cfc-61a7-4482-a141-13c2b8a194d0/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:18,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:22:18,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:22:18,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:22:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22829849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1580021677] [2023-11-23 21:22:18,934 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-11-23 21:22:18,934 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:18,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:18,944 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:18,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs