./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/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_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/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_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/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 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:47,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:47,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:35:47,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:47,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:47,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:47,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:47,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:47,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:47,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:47,958 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:47,958 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:47,959 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:47,961 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:47,961 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:47,962 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:47,962 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:47,963 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:47,963 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:47,965 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:47,965 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:47,966 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:47,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:47,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:47,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:47,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:47,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:47,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:47,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:47,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:47,972 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:47,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:47,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:47,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:47,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:47,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:47,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:47,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:47,975 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:47,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:47,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:47,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:47,976 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:47,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:47,978 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_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 [2023-11-23 20:35:48,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:48,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:48,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:48,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:48,302 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:48,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-23 20:35:51,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:52,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:52,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-23 20:35:52,163 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/data/a76fe05f3/93df7988284344d79e04b9d73eb28a8c/FLAG468e86e41 [2023-11-23 20:35:52,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/data/a76fe05f3/93df7988284344d79e04b9d73eb28a8c [2023-11-23 20:35:52,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:52,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:52,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:52,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:52,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:52,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:52" (1/1) ... [2023-11-23 20:35:52,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25584bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:52, skipping insertion in model container [2023-11-23 20:35:52,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:52" (1/1) ... [2023-11-23 20:35:52,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:54,035 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_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2023-11-23 20:35:54,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:54,247 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:54,586 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_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2023-11-23 20:35:54,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:54,704 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:54,712 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:54,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54 WrapperNode [2023-11-23 20:35:54,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:54,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:54,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:54,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:54,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:54,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:54,981 INFO L138 Inliner]: procedures = 223, calls = 2733, calls flagged for inlining = 70, calls inlined = 65, statements flattened = 5597 [2023-11-23 20:35:54,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:54,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:54,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:54,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:54,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:54,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:55,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:55,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:55,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:55,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (1/1) ... [2023-11-23 20:35:55,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:55,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:55,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d81ed3a4-6bad-4d3e-afbf-45033e8bde97/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:35:55,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:35:55,577 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2023-11-23 20:35:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2023-11-23 20:35:55,578 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 20:35:55,578 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 20:35:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:35:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:35:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:35:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:35:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:35:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:35:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2023-11-23 20:35:55,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2023-11-23 20:35:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2023-11-23 20:35:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2023-11-23 20:35:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:35:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:35:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_td_open_close_lock_of_ti_device [2023-11-23 20:35:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_td_open_close_lock_of_ti_device [2023-11-23 20:35:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2023-11-23 20:35:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2023-11-23 20:35:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 20:35:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 20:35:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2023-11-23 20:35:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2023-11-23 20:35:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2023-11-23 20:35:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2023-11-23 20:35:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:35:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:35:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:35:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:35:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2023-11-23 20:35:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2023-11-23 20:35:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:35:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:35:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2023-11-23 20:35:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2023-11-23 20:35:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:35:55,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:35:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2023-11-23 20:35:55,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2023-11-23 20:35:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-23 20:35:55,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-23 20:35:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2023-11-23 20:35:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2023-11-23 20:35:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ti_port_remove [2023-11-23 20:35:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_port_remove [2023-11-23 20:35:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-23 20:35:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-23 20:35:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:35:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:35:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ti_port_probe [2023-11-23 20:35:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_port_probe [2023-11-23 20:35:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:35:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:35:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2023-11-23 20:35:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2023-11-23 20:35:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2023-11-23 20:35:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2023-11-23 20:35:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2023-11-23 20:35:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2023-11-23 20:35:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:35:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tx_empty [2023-11-23 20:35:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tx_empty [2023-11-23 20:35:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:35:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:35:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-23 20:35:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-23 20:35:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:35:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2023-11-23 20:35:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2023-11-23 20:35:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:35:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2023-11-23 20:35:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2023-11-23 20:35:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:35:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:35:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2023-11-23 20:35:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2023-11-23 20:35:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2023-11-23 20:35:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2023-11-23 20:35:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:35:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:35:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:35:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:35:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 20:35:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 20:35:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 20:35:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 20:35:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2023-11-23 20:35:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2023-11-23 20:35:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:35:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:35:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2023-11-23 20:35:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2023-11-23 20:35:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-23 20:35:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-23 20:35:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:35:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:35:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:35:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2023-11-23 20:35:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2023-11-23 20:35:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 20:35:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 20:35:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 20:35:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 20:35:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2023-11-23 20:35:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2023-11-23 20:35:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2023-11-23 20:35:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2023-11-23 20:35:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:35:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:35:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:35:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 20:35:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 20:35:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2023-11-23 20:35:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2023-11-23 20:35:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2023-11-23 20:35:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2023-11-23 20:35:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:35:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:35:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2023-11-23 20:35:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2023-11-23 20:35:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:35:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:35:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:35:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:35:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:35:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2023-11-23 20:35:55,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2023-11-23 20:35:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 20:35:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 20:35:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:35:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2023-11-23 20:35:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2023-11-23 20:35:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 20:35:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 20:35:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_td_open_close_lock_of_ti_device [2023-11-23 20:35:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_td_open_close_lock_of_ti_device [2023-11-23 20:35:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2023-11-23 20:35:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2023-11-23 20:35:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 20:35:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 20:35:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2023-11-23 20:35:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2023-11-23 20:35:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:35:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:35:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2023-11-23 20:35:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2023-11-23 20:35:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2023-11-23 20:35:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2023-11-23 20:35:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-23 20:35:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-23 20:35:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:56,333 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:56,337 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:57,288 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:36:02,865 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:36:04,774 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:36:04,775 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:36:04,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:04 BoogieIcfgContainer [2023-11-23 20:36:04,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:36:04,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:36:04,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:36:04,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:36:04,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:52" (1/3) ... [2023-11-23 20:36:04,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b97982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:04, skipping insertion in model container [2023-11-23 20:36:04,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:54" (2/3) ... [2023-11-23 20:36:04,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b97982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:36:04, skipping insertion in model container [2023-11-23 20:36:04,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:36:04" (3/3) ... [2023-11-23 20:36:04,788 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2023-11-23 20:36:04,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:36:04,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:36:05,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:36:05,073 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;@e5ba181, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:36:05,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:36:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 1392 states, 879 states have (on average 1.4095563139931742) internal successors, (1239), 945 states have internal predecessors, (1239), 442 states have call successors, (442), 70 states have call predecessors, (442), 69 states have return successors, (438), 431 states have call predecessors, (438), 438 states have call successors, (438) [2023-11-23 20:36:05,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-23 20:36:05,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:05,167 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:05,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:05,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1727334758, now seen corresponding path program 1 times [2023-11-23 20:36:05,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874458291] [2023-11-23 20:36:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-11-23 20:36:08,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874458291] [2023-11-23 20:36:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874458291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:08,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:08,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:08,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190537728] [2023-11-23 20:36:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:08,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:08,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:08,894 INFO L87 Difference]: Start difference. First operand has 1392 states, 879 states have (on average 1.4095563139931742) internal successors, (1239), 945 states have internal predecessors, (1239), 442 states have call successors, (442), 70 states have call predecessors, (442), 69 states have return successors, (438), 431 states have call predecessors, (438), 438 states have call successors, (438) 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 20:36:11,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:13,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:15,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-23 20:36:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:16,637 INFO L93 Difference]: Finished difference Result 4047 states and 6209 transitions. [2023-11-23 20:36:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:16,640 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 209 [2023-11-23 20:36:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:16,691 INFO L225 Difference]: With dead ends: 4047 [2023-11-23 20:36:16,692 INFO L226 Difference]: Without dead ends: 2688 [2023-11-23 20:36:16,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:16,718 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1990 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:16,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 3992 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2023-11-23 20:36:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2023-11-23 20:36:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2684. [2023-11-23 20:36:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 1711 states have (on average 1.4079485680888368) internal successors, (2409), 1826 states have internal predecessors, (2409), 839 states have call successors, (839), 134 states have call predecessors, (839), 133 states have return successors, (833), 819 states have call predecessors, (833), 833 states have call successors, (833) [2023-11-23 20:36:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4081 transitions. [2023-11-23 20:36:17,136 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4081 transitions. Word has length 209 [2023-11-23 20:36:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:17,138 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 4081 transitions. [2023-11-23 20:36:17,138 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 20:36:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4081 transitions. [2023-11-23 20:36:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-23 20:36:17,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:17,150 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:17,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:36:17,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:17,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -817656644, now seen corresponding path program 1 times [2023-11-23 20:36:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48789500] [2023-11-23 20:36:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-11-23 20:36:19,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48789500] [2023-11-23 20:36:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48789500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:19,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437477361] [2023-11-23 20:36:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:19,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:19,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:19,514 INFO L87 Difference]: Start difference. First operand 2684 states and 4081 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 20:36:21,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:23,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:24,078 INFO L93 Difference]: Finished difference Result 2686 states and 4082 transitions. [2023-11-23 20:36:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 211 [2023-11-23 20:36:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:24,105 INFO L225 Difference]: With dead ends: 2686 [2023-11-23 20:36:24,106 INFO L226 Difference]: Without dead ends: 2683 [2023-11-23 20:36:24,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:24,110 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 2048 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:24,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 1987 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-23 20:36:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2023-11-23 20:36:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2683. [2023-11-23 20:36:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 1711 states have (on average 1.407364114552893) internal successors, (2408), 1825 states have internal predecessors, (2408), 838 states have call successors, (838), 134 states have call predecessors, (838), 133 states have return successors, (833), 819 states have call predecessors, (833), 833 states have call successors, (833) [2023-11-23 20:36:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4079 transitions. [2023-11-23 20:36:24,313 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4079 transitions. Word has length 211 [2023-11-23 20:36:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:24,316 INFO L495 AbstractCegarLoop]: Abstraction has 2683 states and 4079 transitions. [2023-11-23 20:36:24,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 20:36:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4079 transitions. [2023-11-23 20:36:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-23 20:36:24,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:24,328 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:24,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:36:24,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:24,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash 421786309, now seen corresponding path program 1 times [2023-11-23 20:36:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479150021] [2023-11-23 20:36:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-11-23 20:36:26,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479150021] [2023-11-23 20:36:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479150021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:26,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31455271] [2023-11-23 20:36:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:26,790 INFO L87 Difference]: Start difference. First operand 2683 states and 4079 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 20:36:28,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:30,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:36:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:36:31,232 INFO L93 Difference]: Finished difference Result 2685 states and 4080 transitions. [2023-11-23 20:36:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:36:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 212 [2023-11-23 20:36:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:36:31,255 INFO L225 Difference]: With dead ends: 2685 [2023-11-23 20:36:31,256 INFO L226 Difference]: Without dead ends: 2682 [2023-11-23 20:36:31,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:31,260 INFO L413 NwaCegarLoop]: 1985 mSDtfsCounter, 2045 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:36:31,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1985 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 20:36:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2023-11-23 20:36:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2023-11-23 20:36:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 1711 states have (on average 1.4067796610169492) internal successors, (2407), 1824 states have internal predecessors, (2407), 837 states have call successors, (837), 134 states have call predecessors, (837), 133 states have return successors, (833), 819 states have call predecessors, (833), 833 states have call successors, (833) [2023-11-23 20:36:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4077 transitions. [2023-11-23 20:36:31,463 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4077 transitions. Word has length 212 [2023-11-23 20:36:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:36:31,465 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4077 transitions. [2023-11-23 20:36:31,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 20:36:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4077 transitions. [2023-11-23 20:36:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-23 20:36:31,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:36:31,470 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:36:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:36:31,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:36:31,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:36:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash 189817055, now seen corresponding path program 1 times [2023-11-23 20:36:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:36:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846709247] [2023-11-23 20:36:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:36:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:36:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:36:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2023-11-23 20:36:33,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:36:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846709247] [2023-11-23 20:36:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846709247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:36:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:36:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:36:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343816459] [2023-11-23 20:36:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:36:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:36:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:36:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:36:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:36:33,511 INFO L87 Difference]: Start difference. First operand 2682 states and 4077 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 20:36:35,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []