./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/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_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/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_82800a37-1de9-4467-8b8c-930ae7d90728/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 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:11,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:11,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:37:11,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:11,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:11,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:11,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:11,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:11,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:11,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:11,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:11,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:11,590 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:11,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:11,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:11,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:11,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:11,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:11,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:11,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:11,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:11,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:11,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:11,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:11,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:11,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:11,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:11,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:11,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:11,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:11,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:11,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:11,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:11,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:11,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:11,602 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:11,603 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_82800a37-1de9-4467-8b8c-930ae7d90728/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2023-11-19 07:37:11,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:11,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:11,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:11,910 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:11,911 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:11,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-19 07:37:15,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:15,688 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:15,690 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-19 07:37:15,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/data/8d68cd20e/e74e76de30cb4fdf939d404c3797008b/FLAG0b6a4bc99 [2023-11-19 07:37:15,749 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/data/8d68cd20e/e74e76de30cb4fdf939d404c3797008b [2023-11-19 07:37:15,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:15,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:15,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:15,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:15,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:15,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:15" (1/1) ... [2023-11-19 07:37:15,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d37781c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:15, skipping insertion in model container [2023-11-19 07:37:15,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:15" (1/1) ... [2023-11-19 07:37:15,898 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:17,294 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2023-11-19 07:37:17,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:17,367 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:17,429 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)); [2775-2776] [2023-11-19 07:37:17,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2794] [2023-11-19 07:37:17,432 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2797] [2023-11-19 07:37:17,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2800] [2023-11-19 07:37:17,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2803] [2023-11-19 07:37:17,483 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3806] [2023-11-19 07:37:17,485 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3828] [2023-11-19 07:37:17,656 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_82800a37-1de9-4467-8b8c-930ae7d90728/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2023-11-19 07:37:17,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:17,764 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:17,765 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:17,765 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:17,773 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:17,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17 WrapperNode [2023-11-19 07:37:17,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:17,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:17,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:17,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:17,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:17,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,031 INFO L138 Inliner]: procedures = 191, calls = 1310, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 3618 [2023-11-19 07:37:18,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:18,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:18,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:18,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:18,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:18,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:18,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:18,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:18,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (1/1) ... [2023-11-19 07:37:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:18,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82800a37-1de9-4467-8b8c-930ae7d90728/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-19 07:37:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-19 07:37:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:37:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:37:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 07:37:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 07:37:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:37:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:37:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:37:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-19 07:37:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-19 07:37:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-19 07:37:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-19 07:37:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:37:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:37:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-19 07:37:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-19 07:37:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-19 07:37:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-19 07:37:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 07:37:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 07:37:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:37:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:37:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-19 07:37:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-19 07:37:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2023-11-19 07:37:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2023-11-19 07:37:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-19 07:37:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-19 07:37:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 07:37:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 07:37:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-19 07:37:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-19 07:37:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-19 07:37:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-19 07:37:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-19 07:37:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-19 07:37:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:37:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:37:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:37:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:37:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-19 07:37:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-19 07:37:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-19 07:37:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-19 07:37:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-19 07:37:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-19 07:37:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 07:37:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 07:37:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:37:18,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:37:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-19 07:37:18,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-19 07:37:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:37:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 07:37:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-19 07:37:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-19 07:37:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-19 07:37:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:37:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:37:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-19 07:37:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-19 07:37:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 07:37:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 07:37:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-19 07:37:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-19 07:37:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-19 07:37:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-19 07:37:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:37:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 07:37:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 07:37:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 07:37:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-19 07:37:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-19 07:37:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-19 07:37:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-19 07:37:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:37:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-19 07:37:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-19 07:37:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-19 07:37:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-19 07:37:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-19 07:37:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-19 07:37:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 07:37:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 07:37:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 07:37:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 07:37:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 07:37:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 07:37:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 07:37:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 07:37:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:37:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:37:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 07:37:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 07:37:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-19 07:37:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-19 07:37:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:37:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-19 07:37:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-19 07:37:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 07:37:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 07:37:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-19 07:37:18,490 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-19 07:37:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:37:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:37:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 07:37:18,491 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 07:37:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:37:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:37:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-19 07:37:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-19 07:37:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 07:37:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 07:37:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-19 07:37:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-19 07:37:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:37:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:37:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 07:37:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 07:37:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-19 07:37:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-19 07:37:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-19 07:37:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-19 07:37:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:37:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:37:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 07:37:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 07:37:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-19 07:37:18,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-19 07:37:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 07:37:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 07:37:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-19 07:37:18,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-19 07:37:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 07:37:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 07:37:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-19 07:37:18,499 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-19 07:37:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:37:18,501 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 07:37:18,503 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 07:37:18,505 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-19 07:37:18,505 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-19 07:37:18,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:18,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:18,507 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:37:18,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:37:19,120 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:19,125 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:40,621 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:40,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:40,663 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:40,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:40 BoogieIcfgContainer [2023-11-19 07:37:40,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:40,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:40,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:40,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:40,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:15" (1/3) ... [2023-11-19 07:37:40,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eedd6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:40, skipping insertion in model container [2023-11-19 07:37:40,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:17" (2/3) ... [2023-11-19 07:37:40,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eedd6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:40, skipping insertion in model container [2023-11-19 07:37:40,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:40" (3/3) ... [2023-11-19 07:37:40,704 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-19 07:37:40,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:40,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:40,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:40,868 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;@71b840c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:40,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 937 states have (on average 1.3852721451440768) internal successors, (1298), 977 states have internal predecessors, (1298), 358 states have call successors, (358), 67 states have call predecessors, (358), 67 states have return successors, (358), 355 states have call predecessors, (358), 358 states have call successors, (358) [2023-11-19 07:37:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:37:40,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:40,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:40,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:40,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -984991709, now seen corresponding path program 1 times [2023-11-19 07:37:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605797759] [2023-11-19 07:37:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:37:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:37:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:43,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605797759] [2023-11-19 07:37:43,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605797759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:43,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:43,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37654717] [2023-11-19 07:37:43,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:43,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:43,871 INFO L87 Difference]: Start difference. First operand has 1364 states, 937 states have (on average 1.3852721451440768) internal successors, (1298), 977 states have internal predecessors, (1298), 358 states have call successors, (358), 67 states have call predecessors, (358), 67 states have return successors, (358), 355 states have call predecessors, (358), 358 states have call successors, (358) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:37:45,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:37:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:56,810 INFO L93 Difference]: Finished difference Result 4417 states and 6717 transitions. [2023-11-19 07:37:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-19 07:37:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:56,885 INFO L225 Difference]: With dead ends: 4417 [2023-11-19 07:37:56,886 INFO L226 Difference]: Without dead ends: 3053 [2023-11-19 07:37:56,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:56,911 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 3151 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 995 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3496 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:56,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3496 Valid, 3744 Invalid, 2732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [995 Valid, 1736 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2023-11-19 07:37:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-19 07:37:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2486. [2023-11-19 07:37:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 1690 states have (on average 1.3579881656804733) internal successors, (2295), 1748 states have internal predecessors, (2295), 671 states have call successors, (671), 126 states have call predecessors, (671), 124 states have return successors, (662), 655 states have call predecessors, (662), 662 states have call successors, (662) [2023-11-19 07:37:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3628 transitions. [2023-11-19 07:37:57,269 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3628 transitions. Word has length 17 [2023-11-19 07:37:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:57,271 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3628 transitions. [2023-11-19 07:37:57,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:37:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3628 transitions. [2023-11-19 07:37:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:37:57,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:57,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:57,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:57,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash -471115181, now seen corresponding path program 1 times [2023-11-19 07:37:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387856321] [2023-11-19 07:37:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:37:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:37:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:59,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387856321] [2023-11-19 07:37:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387856321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:59,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:59,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263005607] [2023-11-19 07:37:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:59,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:59,142 INFO L87 Difference]: Start difference. First operand 2486 states and 3628 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:01,197 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 []