./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:09,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:09,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:11:09,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:09,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:09,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:09,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:09,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:09,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:09,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:09,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:09,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:09,866 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:09,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:09,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:09,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:09,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:09,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:09,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:09,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:09,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:09,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:09,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:09,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:09,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:09,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:09,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:09,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:09,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:09,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:09,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:09,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:09,879 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:09,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:09,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:09,883 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:09,883 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2023-11-12 02:11:10,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:10,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:10,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:10,217 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:10,217 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:10,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-12 02:11:13,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:13,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:13,999 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-12 02:11:14,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/data/025d30a7b/8396744e2d8244ab86cb668e95d06489/FLAG114094380 [2023-11-12 02:11:14,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/data/025d30a7b/8396744e2d8244ab86cb668e95d06489 [2023-11-12 02:11:14,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:14,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:14,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:14,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:14,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:14,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:14" (1/1) ... [2023-11-12 02:11:14,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421efcaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:14, skipping insertion in model container [2023-11-12 02:11:14,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:14" (1/1) ... [2023-11-12 02:11:14,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:15,136 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_060f50f0-d8cf-4de1-af75-f5fdc72364bf/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-12 02:11:15,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:15,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:15,884 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)); [2776-2777] [2023-11-12 02:11:15,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2811] [2023-11-12 02:11:15,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2814] [2023-11-12 02:11:15,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2817] [2023-11-12 02:11:15,889 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2820] [2023-11-12 02:11:15,904 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_060f50f0-d8cf-4de1-af75-f5fdc72364bf/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2023-11-12 02:11:15,941 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3893] [2023-11-12 02:11:15,942 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3915] [2023-11-12 02:11:16,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:16,203 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:16,204 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:16,204 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:16,212 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:16,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16 WrapperNode [2023-11-12 02:11:16,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:16,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:16,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:16,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:16,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,544 INFO L138 Inliner]: procedures = 203, calls = 1322, calls flagged for inlining = 90, calls inlined = 90, statements flattened = 3777 [2023-11-12 02:11:16,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:16,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:16,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:16,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:16,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:16,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:16,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:16,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:16,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (1/1) ... [2023-11-12 02:11:16,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:16,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:16,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_060f50f0-d8cf-4de1-af75-f5fdc72364bf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-12 02:11:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-12 02:11:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-12 02:11:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-12 02:11:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:11:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:11:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:11:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:11:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-12 02:11:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-12 02:11:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-12 02:11:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-12 02:11:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-12 02:11:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-12 02:11:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 02:11:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 02:11:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:11:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:11:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-12 02:11:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-12 02:11:16,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-12 02:11:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-12 02:11:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-12 02:11:16,919 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-12 02:11:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-12 02:11:16,920 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-12 02:11:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 02:11:16,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 02:11:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:11:16,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:11:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-12 02:11:16,921 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-12 02:11:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:11:16,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:11:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 02:11:16,922 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 02:11:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-12 02:11:16,922 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-12 02:11:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-12 02:11:16,923 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-12 02:11:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-12 02:11:16,923 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-12 02:11:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:11:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-12 02:11:16,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-12 02:11:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-12 02:11:16,924 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-12 02:11:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-12 02:11:16,924 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-12 02:11:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 02:11:16,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 02:11:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-12 02:11:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-12 02:11:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 02:11:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 02:11:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:11:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-12 02:11:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-12 02:11:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 02:11:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 02:11:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 02:11:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 02:11:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 02:11:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 02:11:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-12 02:11:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-12 02:11:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-12 02:11:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-12 02:11:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 02:11:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 02:11:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 02:11:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 02:11:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-12 02:11:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-12 02:11:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-12 02:11:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-12 02:11:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-12 02:11:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-12 02:11:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:11:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:11:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:11:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 02:11:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 02:11:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-12 02:11:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-12 02:11:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-12 02:11:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-12 02:11:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:11:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-12 02:11:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-12 02:11:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 02:11:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 02:11:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-12 02:11:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-12 02:11:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-12 02:11:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-12 02:11:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-12 02:11:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-12 02:11:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-12 02:11:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-12 02:11:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-12 02:11:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-12 02:11:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:11:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:11:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-12 02:11:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-12 02:11:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:11:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-12 02:11:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-12 02:11:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-12 02:11:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-12 02:11:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-12 02:11:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-12 02:11:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-12 02:11:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-12 02:11:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:11:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 02:11:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-12 02:11:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-12 02:11:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-12 02:11:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-12 02:11:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-12 02:11:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-12 02:11:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-12 02:11:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-12 02:11:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-12 02:11:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-12 02:11:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-12 02:11:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-12 02:11:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-12 02:11:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-12 02:11:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 02:11:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 02:11:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-12 02:11:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-12 02:11:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-12 02:11:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-12 02:11:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 02:11:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 02:11:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-12 02:11:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-12 02:11:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-12 02:11:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-12 02:11:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-12 02:11:16,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-12 02:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-12 02:11:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-12 02:11:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 02:11:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 02:11:17,659 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:17,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:17,980 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:11:37,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:37,520 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:37,521 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:11:37,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:37 BoogieIcfgContainer [2023-11-12 02:11:37,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:37,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:37,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:37,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:37,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:14" (1/3) ... [2023-11-12 02:11:37,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e89aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:37, skipping insertion in model container [2023-11-12 02:11:37,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:16" (2/3) ... [2023-11-12 02:11:37,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e89aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:37, skipping insertion in model container [2023-11-12 02:11:37,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:37" (3/3) ... [2023-11-12 02:11:37,541 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-12 02:11:37,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:37,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:11:37,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:11:37,676 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=PETRI_NET, 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;@68ab50a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:11:37,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:11:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 1414 states, 980 states have (on average 1.3918367346938776) internal successors, (1364), 1023 states have internal predecessors, (1364), 364 states have call successors, (364), 69 states have call predecessors, (364), 68 states have return successors, (360), 357 states have call predecessors, (360), 360 states have call successors, (360) [2023-11-12 02:11:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:11:37,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:11:37,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:37,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:11:37,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash -881881672, now seen corresponding path program 1 times [2023-11-12 02:11:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581623702] [2023-11-12 02:11:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:11:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:11:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:11:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:11:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-12 02:11:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:11:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:11:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 02:11:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:40,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581623702] [2023-11-12 02:11:40,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581623702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:40,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:40,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:11:40,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850480912] [2023-11-12 02:11:40,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:40,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:11:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:11:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:40,088 INFO L87 Difference]: Start difference. First operand has 1414 states, 980 states have (on average 1.3918367346938776) internal successors, (1364), 1023 states have internal predecessors, (1364), 364 states have call successors, (364), 69 states have call predecessors, (364), 68 states have return successors, (360), 357 states have call predecessors, (360), 360 states have call successors, (360) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:11:42,159 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 [] [2023-11-12 02:11:44,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:11:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:11:55,025 INFO L93 Difference]: Finished difference Result 4850 states and 7456 transitions. [2023-11-12 02:11:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:11:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2023-11-12 02:11:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:11:55,093 INFO L225 Difference]: With dead ends: 4850 [2023-11-12 02:11:55,094 INFO L226 Difference]: Without dead ends: 3422 [2023-11-12 02:11:55,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:11:55,121 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 3703 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 1283 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:11:55,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 4222 Invalid, 3578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1283 Valid, 2293 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time] [2023-11-12 02:11:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2023-11-12 02:11:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 2598. [2023-11-12 02:11:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 1789 states have (on average 1.3627724986025713) internal successors, (2438), 1850 states have internal predecessors, (2438), 681 states have call successors, (681), 129 states have call predecessors, (681), 127 states have return successors, (669), 660 states have call predecessors, (669), 669 states have call successors, (669) [2023-11-12 02:11:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3788 transitions. [2023-11-12 02:11:55,499 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3788 transitions. Word has length 56 [2023-11-12 02:11:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:11:55,502 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 3788 transitions. [2023-11-12 02:11:55,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:11:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3788 transitions. [2023-11-12 02:11:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:11:55,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:11:55,516 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:11:55,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:11:55,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:11:55,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:11:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1569604175, now seen corresponding path program 1 times [2023-11-12 02:11:55,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:11:55,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658992715] [2023-11-12 02:11:55,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:11:55,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:11:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:11:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:11:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:11:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:11:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-12 02:11:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:11:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:11:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:11:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 02:11:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:11:57,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658992715] [2023-11-12 02:11:57,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658992715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:11:57,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:11:57,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:11:57,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422657273] [2023-11-12 02:11:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:11:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:11:57,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:11:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:11:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:11:57,460 INFO L87 Difference]: Start difference. First operand 2598 states and 3788 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:11:59,510 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 [] [2023-11-12 02:12:01,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []