./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:49,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:49,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:15:49,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:49,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:50,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:50,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:50,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:50,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:50,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:50,028 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:50,029 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:50,030 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:50,031 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:50,032 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:50,032 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:50,033 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:50,033 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:50,034 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:50,034 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:50,035 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:50,035 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:50,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:50,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:50,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:50,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:50,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:50,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:50,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:50,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:50,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:50,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:50,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:50,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:50,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:50,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:50,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:50,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:50,044 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:50,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:50,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:50,048 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:50,048 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:50,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:50,049 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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2023-11-23 21:15:50,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:50,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:50,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:50,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:50,397 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:50,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 21:15:53,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:54,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:54,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 21:15:54,269 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/data/e73d89475/0c4db47333bd4e0382a3ca857759641e/FLAG0534e1f5a [2023-11-23 21:15:54,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/data/e73d89475/0c4db47333bd4e0382a3ca857759641e [2023-11-23 21:15:54,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:54,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:54,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:54,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:54,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:54,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:54" (1/1) ... [2023-11-23 21:15:54,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ac75ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:54, skipping insertion in model container [2023-11-23 21:15:54,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:54" (1/1) ... [2023-11-23 21:15:54,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:55,952 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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-11-23 21:15:55,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:56,063 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:56,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [2769-2770] [2023-11-23 21:15:56,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2796] [2023-11-23 21:15:56,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2799] [2023-11-23 21:15:56,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2802] [2023-11-23 21:15:56,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2805] [2023-11-23 21:15:56,245 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3649] [2023-11-23 21:15:56,250 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3671] [2023-11-23 21:15:56,391 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_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2023-11-23 21:15:56,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:56,463 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:56,464 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:56,472 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:56,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56 WrapperNode [2023-11-23 21:15:56,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:56,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:56,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:56,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:56,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,744 INFO L138 Inliner]: procedures = 189, calls = 1332, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 3507 [2023-11-23 21:15:56,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:56,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:56,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:56,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:56,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:56,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:56,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:56,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:56,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (1/1) ... [2023-11-23 21:15:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:57,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:57,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-23 21:15:57,060 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-23 21:15:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-23 21:15:57,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-23 21:15:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-23 21:15:57,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-23 21:15:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-23 21:15:57,062 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-23 21:15:57,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:15:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:15:57,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:15:57,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:15:57,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:15:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:57,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:15:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:15:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-23 21:15:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-23 21:15:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-23 21:15:57,067 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-23 21:15:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:15:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:15:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-23 21:15:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-23 21:15:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-23 21:15:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-23 21:15:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:15:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:15:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:15:57,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:15:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-23 21:15:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-23 21:15:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-23 21:15:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-23 21:15:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-23 21:15:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-23 21:15:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-23 21:15:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-23 21:15:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-23 21:15:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-23 21:15:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-23 21:15:57,072 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-23 21:15:57,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:15:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:15:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:15:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:15:57,073 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-23 21:15:57,073 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-23 21:15:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-23 21:15:57,074 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-23 21:15:57,074 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-23 21:15:57,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-23 21:15:57,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:15:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:15:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:15:57,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:15:57,080 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-23 21:15:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-23 21:15:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:15:57,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:15:57,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:15:57,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:15:57,082 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-23 21:15:57,082 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-23 21:15:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-23 21:15:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-23 21:15:57,083 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-23 21:15:57,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:15:57,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:15:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:15:57,084 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:15:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-23 21:15:57,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-23 21:15:57,084 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-23 21:15:57,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-23 21:15:57,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-23 21:15:57,086 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-23 21:15:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-23 21:15:57,086 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-23 21:15:57,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:15:57,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:15:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:15:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:15:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:15:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-23 21:15:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-23 21:15:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-23 21:15:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-23 21:15:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-23 21:15:57,088 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-23 21:15:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-23 21:15:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-23 21:15:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:15:57,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:15:57,089 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:15:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:15:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:15:57,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:15:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 21:15:57,091 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 21:15:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:15:57,091 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:15:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-23 21:15:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-23 21:15:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-23 21:15:57,093 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-23 21:15:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:15:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 21:15:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 21:15:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-23 21:15:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-23 21:15:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:15:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:15:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:15:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:15:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:15:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:15:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-23 21:15:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-23 21:15:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-23 21:15:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-23 21:15:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-23 21:15:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-23 21:15:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 21:15:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 21:15:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-23 21:15:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-23 21:15:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-23 21:15:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-23 21:15:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-23 21:15:57,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-23 21:15:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:15:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 21:15:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:15:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:15:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-23 21:15:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-23 21:15:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 21:15:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 21:15:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-23 21:15:57,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 21:15:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-23 21:15:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:15:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:15:57,693 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:57,697 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:57,980 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:16:03,934 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:05,149 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:05,149 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:05,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:05 BoogieIcfgContainer [2023-11-23 21:16:05,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:05,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:05,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:05,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:05,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:54" (1/3) ... [2023-11-23 21:16:05,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caf0c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:05, skipping insertion in model container [2023-11-23 21:16:05,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:56" (2/3) ... [2023-11-23 21:16:05,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6caf0c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:05, skipping insertion in model container [2023-11-23 21:16:05,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:05" (3/3) ... [2023-11-23 21:16:05,164 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-23 21:16:05,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:05,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:16:05,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:05,281 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;@1104e9af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:05,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:16:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 646 states have (on average 1.3606811145510835) internal successors, (879), 689 states have internal predecessors, (879), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) [2023-11-23 21:16:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:16:05,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:05,313 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:05,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:05,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -231365267, now seen corresponding path program 1 times [2023-11-23 21:16:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100676118] [2023-11-23 21:16:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:16:08,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100676118] [2023-11-23 21:16:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100676118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812065740] [2023-11-23 21:16:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:08,215 INFO L87 Difference]: Start difference. First operand has 1081 states, 646 states have (on average 1.3606811145510835) internal successors, (879), 689 states have internal predecessors, (879), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 21:16:10,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:12,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:14,303 INFO L93 Difference]: Finished difference Result 3102 states and 4603 transitions. [2023-11-23 21:16:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:14,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2023-11-23 21:16:14,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:14,339 INFO L225 Difference]: With dead ends: 3102 [2023-11-23 21:16:14,340 INFO L226 Difference]: Without dead ends: 2035 [2023-11-23 21:16:14,351 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 21:16:14,354 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 1501 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:14,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2785 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 325 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-11-23 21:16:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-11-23 21:16:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2029. [2023-11-23 21:16:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1224 states have (on average 1.3529411764705883) internal successors, (1656), 1284 states have internal predecessors, (1656), 671 states have call successors, (671), 134 states have call predecessors, (671), 133 states have return successors, (658), 652 states have call predecessors, (658), 658 states have call successors, (658) [2023-11-23 21:16:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2985 transitions. [2023-11-23 21:16:14,600 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2985 transitions. Word has length 135 [2023-11-23 21:16:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:14,602 INFO L495 AbstractCegarLoop]: Abstraction has 2029 states and 2985 transitions. [2023-11-23 21:16:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 21:16:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2985 transitions. [2023-11-23 21:16:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:16:14,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:14,607 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:14,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:16:14,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:14,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:14,608 INFO L85 PathProgramCache]: Analyzing trace with hash -350915662, now seen corresponding path program 1 times [2023-11-23 21:16:14,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:14,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985537819] [2023-11-23 21:16:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:14,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:16:16,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:16,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985537819] [2023-11-23 21:16:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985537819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:16,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:16,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:16,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550359678] [2023-11-23 21:16:16,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:16,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:16,501 INFO L87 Difference]: Start difference. First operand 2029 states and 2985 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:16:18,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:20,495 INFO L93 Difference]: Finished difference Result 3996 states and 5885 transitions. [2023-11-23 21:16:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:20,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2023-11-23 21:16:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:20,532 INFO L225 Difference]: With dead ends: 3996 [2023-11-23 21:16:20,532 INFO L226 Difference]: Without dead ends: 3971 [2023-11-23 21:16:20,538 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 21:16:20,540 INFO L413 NwaCegarLoop]: 1414 mSDtfsCounter, 1520 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:20,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 2740 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 21:16:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2023-11-23 21:16:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3967. [2023-11-23 21:16:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2400 states have (on average 1.3516666666666666) internal successors, (3244), 2508 states have internal predecessors, (3244), 1307 states have call successors, (1307), 262 states have call predecessors, (1307), 259 states have return successors, (1295), 1280 states have call predecessors, (1295), 1295 states have call successors, (1295) [2023-11-23 21:16:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5846 transitions. [2023-11-23 21:16:20,906 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5846 transitions. Word has length 135 [2023-11-23 21:16:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:20,907 INFO L495 AbstractCegarLoop]: Abstraction has 3967 states and 5846 transitions. [2023-11-23 21:16:20,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:16:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5846 transitions. [2023-11-23 21:16:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 21:16:20,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:20,911 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:20,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:16:20,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:20,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:20,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2005579789, now seen corresponding path program 1 times [2023-11-23 21:16:20,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:20,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792732182] [2023-11-23 21:16:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:16:22,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:22,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792732182] [2023-11-23 21:16:22,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792732182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:22,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:22,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995206842] [2023-11-23 21:16:22,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:22,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:22,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:22,578 INFO L87 Difference]: Start difference. First operand 3967 states and 5846 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:16:24,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:26,834 INFO L93 Difference]: Finished difference Result 11809 states and 17422 transitions. [2023-11-23 21:16:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:26,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-23 21:16:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:26,930 INFO L225 Difference]: With dead ends: 11809 [2023-11-23 21:16:26,930 INFO L226 Difference]: Without dead ends: 7869 [2023-11-23 21:16:26,955 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 21:16:26,960 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 1521 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:26,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 3007 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 21:16:26,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2023-11-23 21:16:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7858. [2023-11-23 21:16:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 4761 states have (on average 1.3526570048309179) internal successors, (6440), 4969 states have internal predecessors, (6440), 2585 states have call successors, (2585), 516 states have call predecessors, (2585), 511 states have return successors, (2567), 2540 states have call predecessors, (2567), 2567 states have call successors, (2567) [2023-11-23 21:16:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 11592 transitions. [2023-11-23 21:16:27,570 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 11592 transitions. Word has length 136 [2023-11-23 21:16:27,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:27,572 INFO L495 AbstractCegarLoop]: Abstraction has 7858 states and 11592 transitions. [2023-11-23 21:16:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 21:16:27,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 11592 transitions. [2023-11-23 21:16:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 21:16:27,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:27,582 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:16:27,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:27,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash 895253892, now seen corresponding path program 1 times [2023-11-23 21:16:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:27,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991137551] [2023-11-23 21:16:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 21:16:29,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991137551] [2023-11-23 21:16:29,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991137551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:29,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:29,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:16:29,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538150981] [2023-11-23 21:16:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:16:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:29,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:16:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:16:29,090 INFO L87 Difference]: Start difference. First operand 7858 states and 11592 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:16:31,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:16:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:33,555 INFO L93 Difference]: Finished difference Result 23504 states and 34685 transitions. [2023-11-23 21:16:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:16:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2023-11-23 21:16:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:33,703 INFO L225 Difference]: With dead ends: 23504 [2023-11-23 21:16:33,703 INFO L226 Difference]: Without dead ends: 15670 [2023-11-23 21:16:33,747 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 21:16:33,751 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1512 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:33,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 2816 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 321 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 21:16:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15670 states. [2023-11-23 21:16:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15670 to 15631. [2023-11-23 21:16:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15631 states, 9482 states have (on average 1.3533009913520355) internal successors, (12832), 9888 states have internal predecessors, (12832), 5133 states have call successors, (5133), 1023 states have call predecessors, (5133), 1015 states have return successors, (5113), 5055 states have call predecessors, (5113), 5113 states have call successors, (5113) [2023-11-23 21:16:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15631 states to 15631 states and 23078 transitions. [2023-11-23 21:16:35,019 INFO L78 Accepts]: Start accepts. Automaton has 15631 states and 23078 transitions. Word has length 153 [2023-11-23 21:16:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:35,021 INFO L495 AbstractCegarLoop]: Abstraction has 15631 states and 23078 transitions. [2023-11-23 21:16:35,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:16:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 15631 states and 23078 transitions. [2023-11-23 21:16:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-23 21:16:35,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:35,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:35,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:16:35,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:35,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1901259803, now seen corresponding path program 1 times [2023-11-23 21:16:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816083776] [2023-11-23 21:16:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-23 21:16:37,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816083776] [2023-11-23 21:16:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816083776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:16:37,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091539640] [2023-11-23 21:16:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:37,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:37,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:37,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdd2cb1-5864-4676-b9d6-97c1691dec2f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process