./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/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 c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:09:15,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:09:15,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:09:15,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:09:15,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:09:15,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:09:15,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:09:15,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:09:15,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:09:15,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:09:15,326 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:09:15,327 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:09:15,328 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:09:15,328 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:09:15,329 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:09:15,330 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:09:15,330 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:09:15,331 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:09:15,332 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:09:15,332 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:09:15,333 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:09:15,334 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:09:15,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:09:15,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:09:15,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:09:15,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:09:15,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:09:15,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:09:15,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:09:15,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:09:15,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:09:15,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:09:15,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:09:15,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:09:15,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:15,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:09:15,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:09:15,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:09:15,343 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:09:15,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:09:15,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:09:15,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:09:15,360 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:09:15,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:09:15,360 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2023-11-23 21:09:15,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:09:15,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:09:15,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:09:15,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:09:15,735 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:09:15,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-23 21:09:18,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:09:19,529 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:09:19,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-23 21:09:19,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/data/d5f2a4f70/5932abe9c50840f38767b34e99266376/FLAG8c145155b [2023-11-23 21:09:19,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/data/d5f2a4f70/5932abe9c50840f38767b34e99266376 [2023-11-23 21:09:19,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:09:19,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:09:19,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:19,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:09:19,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:09:19,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:19" (1/1) ... [2023-11-23 21:09:19,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284093b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:19, skipping insertion in model container [2023-11-23 21:09:19,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:19" (1/1) ... [2023-11-23 21:09:19,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:09:22,294 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-23 21:09:22,298 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-23 21:09:22,299 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-23 21:09:22,300 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-23 21:09:22,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:22,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:09:22,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5396] [2023-11-23 21:09:22,595 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5403] [2023-11-23 21:09:22,596 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5410] [2023-11-23 21:09:22,908 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2023-11-23 21:09:22,909 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2023-11-23 21:09:22,909 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2023-11-23 21:09:22,910 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_ff4ba559-f695-4112-9653-5bbe4ef13e5d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2023-11-23 21:09:22,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:09:23,150 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:09:23,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23 WrapperNode [2023-11-23 21:09:23,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:09:23,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:23,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:09:23,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:09:23,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,592 INFO L138 Inliner]: procedures = 311, calls = 3195, calls flagged for inlining = 173, calls inlined = 160, statements flattened = 5946 [2023-11-23 21:09:23,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:09:23,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:09:23,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:09:23,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:09:23,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:23,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:24,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:09:24,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:09:24,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:09:24,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:09:24,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (1/1) ... [2023-11-23 21:09:24,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:09:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:09:24,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:09:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4ba559-f695-4112-9653-5bbe4ef13e5d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:09:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2023-11-23 21:09:24,090 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2023-11-23 21:09:24,090 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-23 21:09:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-23 21:09:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 21:09:24,091 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 21:09:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:09:24,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:09:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:09:24,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:09:24,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:09:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:09:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2023-11-23 21:09:24,095 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2023-11-23 21:09:24,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-23 21:09:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-23 21:09:24,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:09:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:09:24,098 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-23 21:09:24,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-23 21:09:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2023-11-23 21:09:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2023-11-23 21:09:24,101 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-23 21:09:24,102 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-23 21:09:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2023-11-23 21:09:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2023-11-23 21:09:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2023-11-23 21:09:24,103 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2023-11-23 21:09:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:09:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:09:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 21:09:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 21:09:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2023-11-23 21:09:24,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2023-11-23 21:09:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:09:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:09:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-23 21:09:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-23 21:09:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 21:09:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 21:09:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:09:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2023-11-23 21:09:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2023-11-23 21:09:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 21:09:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 21:09:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:09:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2023-11-23 21:09:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2023-11-23 21:09:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:09:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:09:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:09:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:09:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:09:24,109 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:09:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:09:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:09:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2023-11-23 21:09:24,110 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2023-11-23 21:09:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:09:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:09:24,111 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:09:24,111 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:09:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:09:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:09:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-23 21:09:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-23 21:09:24,112 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-23 21:09:24,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-23 21:09:24,113 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2023-11-23 21:09:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2023-11-23 21:09:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:09:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:09:24,114 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2023-11-23 21:09:24,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2023-11-23 21:09:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 21:09:24,115 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 21:09:24,115 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:09:24,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:09:24,116 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2023-11-23 21:09:24,116 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2023-11-23 21:09:24,117 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 21:09:24,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 21:09:24,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:09:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:09:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2023-11-23 21:09:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2023-11-23 21:09:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-23 21:09:24,120 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-23 21:09:24,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:09:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-11-23 21:09:24,121 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-11-23 21:09:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:09:24,121 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2023-11-23 21:09:24,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2023-11-23 21:09:24,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:09:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:09:24,127 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:09:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:09:24,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:09:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:09:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:09:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:09:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:09:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2023-11-23 21:09:24,129 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2023-11-23 21:09:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:09:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:09:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2023-11-23 21:09:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2023-11-23 21:09:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2023-11-23 21:09:24,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2023-11-23 21:09:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 21:09:24,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 21:09:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:09:24,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:09:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:09:24,132 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:09:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:09:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:09:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-23 21:09:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2023-11-23 21:09:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:09:24,133 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:09:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:09:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:09:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:09:24,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:09:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:09:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2023-11-23 21:09:24,135 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2023-11-23 21:09:24,135 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2023-11-23 21:09:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2023-11-23 21:09:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:09:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:09:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:09:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:09:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:09:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-23 21:09:24,139 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-23 21:09:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:09:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:09:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:09:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:09:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:09:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:09:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-23 21:09:24,146 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-23 21:09:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-23 21:09:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-23 21:09:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 21:09:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 21:09:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:09:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:09:24,152 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2023-11-23 21:09:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2023-11-23 21:09:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:09:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:09:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2023-11-23 21:09:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2023-11-23 21:09:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-23 21:09:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-23 21:09:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-23 21:09:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2023-11-23 21:09:24,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2023-11-23 21:09:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:09:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2023-11-23 21:09:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2023-11-23 21:09:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:09:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:09:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:09:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:09:24,904 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:09:24,909 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:09:25,884 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:09:32,420 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:09:32,957 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:09:34,988 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:09:34,988 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:09:34,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:34 BoogieIcfgContainer [2023-11-23 21:09:34,991 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:09:34,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:09:34,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:09:34,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:09:34,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:19" (1/3) ... [2023-11-23 21:09:35,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bef738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:34, skipping insertion in model container [2023-11-23 21:09:35,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:23" (2/3) ... [2023-11-23 21:09:35,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bef738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:35, skipping insertion in model container [2023-11-23 21:09:35,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:34" (3/3) ... [2023-11-23 21:09:35,003 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2023-11-23 21:09:35,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:09:35,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:09:35,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:09:35,139 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;@68664e52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:09:35,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:09:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) [2023-11-23 21:09:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 21:09:35,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:35,195 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:35,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:35,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1597957347, now seen corresponding path program 1 times [2023-11-23 21:09:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166834640] [2023-11-23 21:09:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-23 21:09:36,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:36,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166834640] [2023-11-23 21:09:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166834640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:36,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:36,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808876965] [2023-11-23 21:09:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:36,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:36,849 INFO L87 Difference]: Start difference. First operand has 1129 states, 714 states have (on average 1.334733893557423) internal successors, (953), 723 states have internal predecessors, (953), 337 states have call successors, (337), 77 states have call predecessors, (337), 76 states have return successors, (331), 329 states have call predecessors, (331), 331 states have call successors, (331) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:09:41,654 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 21:09:43,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:45,768 WARN L539 Checker$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 21:09:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:45,965 INFO L93 Difference]: Finished difference Result 3245 states and 4667 transitions. [2023-11-23 21:09:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2023-11-23 21:09:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:46,018 INFO L225 Difference]: With dead ends: 3245 [2023-11-23 21:09:46,018 INFO L226 Difference]: Without dead ends: 2131 [2023-11-23 21:09:46,030 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 21:09:46,034 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1521 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:46,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2663 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2023-11-23 21:09:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-11-23 21:09:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2129. [2023-11-23 21:09:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1359 states have (on average 1.3311258278145695) internal successors, (1809), 1376 states have internal predecessors, (1809), 621 states have call successors, (621), 148 states have call predecessors, (621), 147 states have return successors, (618), 614 states have call predecessors, (618), 618 states have call successors, (618) [2023-11-23 21:09:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3048 transitions. [2023-11-23 21:09:46,291 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3048 transitions. Word has length 140 [2023-11-23 21:09:46,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3048 transitions. [2023-11-23 21:09:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:09:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3048 transitions. [2023-11-23 21:09:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 21:09:46,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:46,307 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:46,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:09:46,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:46,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1670040503, now seen corresponding path program 1 times [2023-11-23 21:09:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389170494] [2023-11-23 21:09:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-11-23 21:09:47,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389170494] [2023-11-23 21:09:47,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389170494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:47,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:47,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:09:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684895964] [2023-11-23 21:09:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:09:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:09:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:09:47,286 INFO L87 Difference]: Start difference. First operand 2129 states and 3048 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:09:52,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:09:54,305 WARN L539 Checker$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 21:09:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:09:54,447 INFO L93 Difference]: Finished difference Result 5147 states and 7343 transitions. [2023-11-23 21:09:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:09:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2023-11-23 21:09:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:09:54,472 INFO L225 Difference]: With dead ends: 5147 [2023-11-23 21:09:54,472 INFO L226 Difference]: Without dead ends: 3043 [2023-11-23 21:09:54,482 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 21:09:54,484 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 669 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:09:54,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2682 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2023-11-23 21:09:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2023-11-23 21:09:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3032. [2023-11-23 21:09:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1961 states have (on average 1.3396226415094339) internal successors, (2627), 1991 states have internal predecessors, (2627), 838 states have call successors, (838), 232 states have call predecessors, (838), 231 states have return successors, (835), 822 states have call predecessors, (835), 835 states have call successors, (835) [2023-11-23 21:09:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 4300 transitions. [2023-11-23 21:09:54,744 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 4300 transitions. Word has length 201 [2023-11-23 21:09:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:09:54,746 INFO L495 AbstractCegarLoop]: Abstraction has 3032 states and 4300 transitions. [2023-11-23 21:09:54,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:09:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 4300 transitions. [2023-11-23 21:09:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-23 21:09:54,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:09:54,758 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 21:09:54,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:09:54,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:09:54,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:09:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -585123425, now seen corresponding path program 1 times [2023-11-23 21:09:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:09:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325445081] [2023-11-23 21:09:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:09:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:09:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:09:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-11-23 21:09:55,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:09:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325445081] [2023-11-23 21:09:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325445081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:09:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:09:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692350119] [2023-11-23 21:09:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:09:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:55,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:09:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:09:55,903 INFO L87 Difference]: Start difference. First operand 3032 states and 4300 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:10:01,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:10:03,022 WARN L539 Checker$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 21:10:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:03,179 INFO L93 Difference]: Finished difference Result 3032 states and 4300 transitions. [2023-11-23 21:10:03,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:10:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 188 [2023-11-23 21:10:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:03,204 INFO L225 Difference]: With dead ends: 3032 [2023-11-23 21:10:03,204 INFO L226 Difference]: Without dead ends: 3007 [2023-11-23 21:10:03,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:10:03,208 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1540 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:03,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2686 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 501 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-11-23 21:10:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-11-23 21:10:03,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2023-11-23 21:10:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1954 states have (on average 1.3377686796315251) internal successors, (2614), 1978 states have internal predecessors, (2614), 823 states have call successors, (823), 229 states have call predecessors, (823), 229 states have return successors, (823), 813 states have call predecessors, (823), 823 states have call successors, (823) [2023-11-23 21:10:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4260 transitions. [2023-11-23 21:10:03,407 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4260 transitions. Word has length 188 [2023-11-23 21:10:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4260 transitions. [2023-11-23 21:10:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:10:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4260 transitions. [2023-11-23 21:10:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-23 21:10:03,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:03,420 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 21:10:03,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:10:03,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:03,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 642776973, now seen corresponding path program 1 times [2023-11-23 21:10:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814594430] [2023-11-23 21:10:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2023-11-23 21:10:04,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814594430] [2023-11-23 21:10:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814594430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:04,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:04,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:10:04,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958641471] [2023-11-23 21:10:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:10:04,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:10:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:10:04,127 INFO L87 Difference]: Start difference. First operand 3007 states and 4260 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23)