./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 9bd2c7ff 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_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/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_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:45:50,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:50,534 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:45:50,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:50,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:50,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:50,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:50,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:50,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:50,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:50,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:50,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:50,593 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:50,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:50,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:50,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:50,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:50,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:50,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:50,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:50,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:50,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:50,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:50,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:50,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:50,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:50,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:50,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:50,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:50,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:50,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:50,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:50,606 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:50,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:50,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:50,607 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:50,607 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_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2023-11-19 07:45:50,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:50,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:50,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:50,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:50,987 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:50,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-19 07:45:53,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:54,596 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:54,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-19 07:45:54,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/data/5f44c19d1/d34d05b444e4444fa43018a3cc713384/FLAG0f445b270 [2023-11-19 07:45:54,668 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/data/5f44c19d1/d34d05b444e4444fa43018a3cc713384 [2023-11-19 07:45:54,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:54,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:54,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:54,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:54,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:54,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:54" (1/1) ... [2023-11-19 07:45:54,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b79c685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:54, skipping insertion in model container [2023-11-19 07:45:54,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:54" (1/1) ... [2023-11-19 07:45:54,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:55,872 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_83548e07-fb21-4d27-9eda-60f6529f7c70/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] [2023-11-19 07:45:56,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:56,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:56,744 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] [2023-11-19 07:45:56,748 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2811] [2023-11-19 07:45:56,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2814] [2023-11-19 07:45:56,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2817] [2023-11-19 07:45:56,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2820] [2023-11-19 07:45:56,768 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_83548e07-fb21-4d27-9eda-60f6529f7c70/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] [2023-11-19 07:45:56,845 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3893] [2023-11-19 07:45:56,847 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3915] [2023-11-19 07:45:57,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:57,125 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:57,126 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:57,126 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:57,134 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:57,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57 WrapperNode [2023-11-19 07:45:57,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:57,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:57,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:57,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:57,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,447 INFO L138 Inliner]: procedures = 203, calls = 1322, calls flagged for inlining = 90, calls inlined = 90, statements flattened = 3777 [2023-11-19 07:45:57,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:57,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:57,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:57,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:57,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,717 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:57,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:57,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:57,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:57,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (1/1) ... [2023-11-19 07:45:57,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:57,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:57,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:57,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83548e07-fb21-4d27-9eda-60f6529f7c70/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-19 07:45:57,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-19 07:45:57,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-11-19 07:45:57,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-11-19 07:45:57,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:45:57,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:45:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 07:45:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 07:45:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-19 07:45:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-19 07:45:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-19 07:45:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-19 07:45:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-19 07:45:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-19 07:45:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 07:45:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 07:45:57,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:45:57,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:45:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-19 07:45:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-19 07:45:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-19 07:45:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-19 07:45:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 07:45:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 07:45:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-19 07:45:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-19 07:45:57,889 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:45:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:45:57,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:45:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:45:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-19 07:45:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-19 07:45:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:45:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:45:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:45:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:45:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-19 07:45:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-19 07:45:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-19 07:45:57,892 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-19 07:45:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 07:45:57,893 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 07:45:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:45:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-19 07:45:57,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-19 07:45:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-19 07:45:57,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-19 07:45:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 07:45:57,894 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 07:45:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 07:45:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 07:45:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 07:45:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 07:45:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:45:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:45:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:45:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-19 07:45:57,897 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-19 07:45:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 07:45:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 07:45:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:45:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:45:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:45:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:45:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 07:45:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 07:45:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-19 07:45:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-19 07:45:57,902 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:45:57,902 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:45:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 07:45:57,903 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 07:45:57,903 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-19 07:45:57,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-19 07:45:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 07:45:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 07:45:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-19 07:45:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-19 07:45:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:45:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 07:45:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 07:45:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 07:45:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 07:45:57,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:45:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:45:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 07:45:57,907 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 07:45:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:45:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-19 07:45:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-19 07:45:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:45:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:45:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-19 07:45:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-19 07:45:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-19 07:45:57,909 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-19 07:45:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:57,909 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-19 07:45:57,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-19 07:45:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-19 07:45:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-19 07:45:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-19 07:45:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-19 07:45:57,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:45:57,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:45:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2023-11-19 07:45:57,911 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2023-11-19 07:45:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:45:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 07:45:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-19 07:45:57,913 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-19 07:45:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-19 07:45:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-19 07:45:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-19 07:45:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 07:45:57,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 07:45:57,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:45:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 07:45:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-19 07:45:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-19 07:45:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-19 07:45:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-19 07:45:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-19 07:45:57,917 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-19 07:45:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 07:45:57,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 07:45:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 07:45:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 07:45:57,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-19 07:45:57,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-19 07:45:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-19 07:45:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-19 07:45:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 07:45:57,920 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 07:45:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-19 07:45:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-19 07:45:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-19 07:45:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-19 07:45:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:45:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:45:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-19 07:45:57,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-19 07:45:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 07:45:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 07:45:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-19 07:45:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-19 07:45:57,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:57,930 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-19 07:45:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-19 07:45:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:45:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:45:58,604 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:58,610 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:58,890 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 07:46:18,036 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:18,067 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:18,067 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:46:18,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:18 BoogieIcfgContainer [2023-11-19 07:46:18,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:18,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:18,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:18,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:18,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:54" (1/3) ... [2023-11-19 07:46:18,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d632d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:18, skipping insertion in model container [2023-11-19 07:46:18,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:57" (2/3) ... [2023-11-19 07:46:18,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d632d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:18, skipping insertion in model container [2023-11-19 07:46:18,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:18" (3/3) ... [2023-11-19 07:46:18,102 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2023-11-19 07:46:18,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:18,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:46:18,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:18,240 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;@735e8f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:18,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:46:18,252 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) [2023-11-19 07:46:18,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:46:18,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:18,270 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] [2023-11-19 07:46:18,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:18,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:18,277 INFO L85 PathProgramCache]: Analyzing trace with hash -881881672, now seen corresponding path program 1 times [2023-11-19 07:46:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:18,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616659331] [2023-11-19 07:46:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:18,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:46:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:46:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:46:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:46:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:46:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:46:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:46:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:46:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616659331] [2023-11-19 07:46:20,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616659331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:20,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478011685] [2023-11-19 07:46:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:20,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:20,624 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) [2023-11-19 07:46:22,703 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 [] [2023-11-19 07:46:24,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:46:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:38,415 INFO L93 Difference]: Finished difference Result 4850 states and 7456 transitions. [2023-11-19 07:46:38,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:46:38,417 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 [2023-11-19 07:46:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:38,472 INFO L225 Difference]: With dead ends: 4850 [2023-11-19 07:46:38,472 INFO L226 Difference]: Without dead ends: 3422 [2023-11-19 07:46:38,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:38,507 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 3703 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 1283 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4072 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:38,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4072 Valid, 4228 Invalid, 3578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1283 Valid, 2293 Invalid, 2 Unknown, 0 Unchecked, 17.0s Time] [2023-11-19 07:46:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2023-11-19 07:46:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 2598. [2023-11-19 07:46:38,870 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) [2023-11-19 07:46:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3788 transitions. [2023-11-19 07:46:38,902 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3788 transitions. Word has length 56 [2023-11-19 07:46:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:38,905 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 3788 transitions. [2023-11-19 07:46:38,905 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) [2023-11-19 07:46:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3788 transitions. [2023-11-19 07:46:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:46:38,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:38,918 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] [2023-11-19 07:46:38,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:38,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:46:38,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:38,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1569604175, now seen corresponding path program 1 times [2023-11-19 07:46:38,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:38,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325043836] [2023-11-19 07:46:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:38,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:46:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 07:46:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:46:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:46:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 07:46:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:46:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-19 07:46:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:46:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:40,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325043836] [2023-11-19 07:46:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325043836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:40,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:40,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:40,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403563380] [2023-11-19 07:46:40,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:40,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:40,477 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) [2023-11-19 07:46:42,520 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 []