./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-1.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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/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 cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:18,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:18,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:59:18,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:18,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:18,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:18,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:18,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:18,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:18,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:18,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:18,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:18,878 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:18,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:18,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:18,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:18,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:18,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:18,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:18,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:18,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:18,885 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:18,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:18,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:18,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:18,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:18,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:18,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:18,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:18,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:18,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:18,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:18,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:18,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:18,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:18,892 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:18,892 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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2023-11-19 07:59:19,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:19,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:19,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:19,330 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:19,331 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:19,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-19 07:59:22,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:23,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:23,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-19 07:59:23,404 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/data/13d1539f1/ad6f5f810c084e18920169a5000586c3/FLAG37bd00183 [2023-11-19 07:59:23,427 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/data/13d1539f1/ad6f5f810c084e18920169a5000586c3 [2023-11-19 07:59:23,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:23,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:23,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:23,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:23,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:23,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:23" (1/1) ... [2023-11-19 07:59:23,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11de5c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:23, skipping insertion in model container [2023-11-19 07:59:23,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:23" (1/1) ... [2023-11-19 07:59:23,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:25,297 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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-19 07:59:25,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:25,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:25,503 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 07:59:25,506 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 07:59:25,507 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 07:59:25,507 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 07:59:25,508 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 07:59:25,606 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3806] [2023-11-19 07:59:25,610 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3828] [2023-11-19 07:59:25,763 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_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-19 07:59:25,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:25,887 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:25,888 WARN L675 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:25,888 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:25,898 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:25,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25 WrapperNode [2023-11-19 07:59:25,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:25,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:25,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:25,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:25,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,330 INFO L138 Inliner]: procedures = 191, calls = 1310, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 3618 [2023-11-19 07:59:26,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:26,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:26,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:26,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:26,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:26,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:26,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:26,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:26,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (1/1) ... [2023-11-19 07:59:26,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:26,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:26,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7d9ae-03b0-4657-9ee4-ec3cd2754bc8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-19 07:59:26,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-19 07:59:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:59:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-19 07:59:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 07:59:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 07:59:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:59:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:59:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:59:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-19 07:59:26,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-19 07:59:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-19 07:59:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-19 07:59:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:59:26,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:59:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-19 07:59:26,882 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-19 07:59:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-19 07:59:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-19 07:59:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 07:59:26,885 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 07:59:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:59:26,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:59:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-19 07:59:26,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-19 07:59:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2023-11-19 07:59:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2023-11-19 07:59:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-19 07:59:26,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-19 07:59:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 07:59:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 07:59:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-19 07:59:26,889 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-19 07:59:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-19 07:59:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-19 07:59:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-19 07:59:26,890 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-19 07:59:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:59:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:59:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-19 07:59:26,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-19 07:59:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-19 07:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-19 07:59:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-19 07:59:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-19 07:59:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 07:59:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 07:59:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:59:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:59:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-19 07:59:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-19 07:59:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 07:59:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-19 07:59:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-19 07:59:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-19 07:59:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 07:59:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 07:59:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-19 07:59:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-19 07:59:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 07:59:26,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 07:59:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-19 07:59:26,899 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-19 07:59:26,899 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-19 07:59:26,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-19 07:59:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:26,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:59:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 07:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 07:59:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 07:59:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-19 07:59:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-19 07:59:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-19 07:59:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-19 07:59:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:59:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-19 07:59:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-19 07:59:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-19 07:59:26,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-19 07:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-19 07:59:26,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-19 07:59:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-19 07:59:26,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-19 07:59:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 07:59:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 07:59:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 07:59:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 07:59:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 07:59:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 07:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:59:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:59:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 07:59:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 07:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-19 07:59:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-19 07:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:59:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-19 07:59:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-19 07:59:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 07:59:26,908 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 07:59:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-19 07:59:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-19 07:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:59:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:59:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 07:59:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 07:59:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 07:59:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 07:59:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-19 07:59:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-19 07:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 07:59:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 07:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-19 07:59:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-19 07:59:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:59:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 07:59:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 07:59:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-19 07:59:26,914 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-19 07:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-19 07:59:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-19 07:59:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:59:26,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 07:59:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 07:59:26,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 07:59:26,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-19 07:59:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-19 07:59:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-19 07:59:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-19 07:59:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-19 07:59:26,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-19 07:59:26,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 07:59:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 07:59:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-19 07:59:26,919 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-19 07:59:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 07:59:26,924 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 07:59:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-19 07:59:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-19 07:59:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 07:59:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 07:59:27,639 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:27,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:49,877 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:49,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:49,903 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:59:49,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:49 BoogieIcfgContainer [2023-11-19 07:59:49,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:49,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:49,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:49,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:49,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:23" (1/3) ... [2023-11-19 07:59:49,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0420be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:49, skipping insertion in model container [2023-11-19 07:59:49,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:25" (2/3) ... [2023-11-19 07:59:49,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0420be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:49, skipping insertion in model container [2023-11-19 07:59:49,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:49" (3/3) ... [2023-11-19 07:59:49,935 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-19 07:59:49,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:49,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:50,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:50,071 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;@99018a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:50,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:50,085 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 07:59:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:59:50,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:50,097 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 07:59:50,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:50,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -984991709, now seen corresponding path program 1 times [2023-11-19 07:59:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:50,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365349842] [2023-11-19 07:59:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:59:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:59:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,611 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 07:59:52,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365349842] [2023-11-19 07:59:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365349842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:52,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167266623] [2023-11-19 07:59:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:52,672 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 07:59:54,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:00:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:04,446 INFO L93 Difference]: Finished difference Result 4417 states and 6717 transitions. [2023-11-19 08:00:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:04,449 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 08:00:04,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:04,496 INFO L225 Difference]: With dead ends: 4417 [2023-11-19 08:00:04,496 INFO L226 Difference]: Without dead ends: 3053 [2023-11-19 08:00:04,511 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 08:00:04,515 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 3151 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 995 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 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, 11.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:04,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 3744 Invalid, 2732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [995 Valid, 1736 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2023-11-19 08:00:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-19 08:00:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2486. [2023-11-19 08:00:04,808 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 08:00:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3628 transitions. [2023-11-19 08:00:04,838 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3628 transitions. Word has length 17 [2023-11-19 08:00:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:04,839 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3628 transitions. [2023-11-19 08:00:04,840 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 08:00:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3628 transitions. [2023-11-19 08:00:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 08:00:04,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:04,842 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 08:00:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:04,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:04,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash -471115181, now seen corresponding path program 1 times [2023-11-19 08:00:04,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320315347] [2023-11-19 08:00:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 08:00:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 08:00:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,436 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 08:00:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:06,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320315347] [2023-11-19 08:00:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320315347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:06,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:06,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591936945] [2023-11-19 08:00:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:06,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:06,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:06,441 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 08:00:08,496 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 []