./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/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_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:04,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:04,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:18:04,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:04,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:04,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:04,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:04,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:04,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:04,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:04,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:04,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:04,370 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:04,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:04,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:04,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:04,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:04,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:04,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:04,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:04,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:04,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:04,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:04,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:04,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:04,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:04,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:04,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:04,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:04,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:04,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:04,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:04,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:04,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:04,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:04,383 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:04,383 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_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2023-11-12 02:18:04,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:04,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:04,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:04,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:04,745 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:04,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-12 02:18:08,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:08,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:08,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-12 02:18:08,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/data/68284718c/fcb3dc50587644d2a37d452f74d8ea10/FLAGabf03fe8a [2023-11-12 02:18:08,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/data/68284718c/fcb3dc50587644d2a37d452f74d8ea10 [2023-11-12 02:18:08,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:08,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:08,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:08,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:08,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:08,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:08" (1/1) ... [2023-11-12 02:18:08,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd822ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:08, skipping insertion in model container [2023-11-12 02:18:08,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:08" (1/1) ... [2023-11-12 02:18:08,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:10,421 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_85acfe5f-4e6d-4bb8-957a-d051816ec995/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-12 02:18:10,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:10,537 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:10,635 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] [2023-11-12 02:18:10,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2794] [2023-11-12 02:18:10,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2797] [2023-11-12 02:18:10,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2800] [2023-11-12 02:18:10,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2803] [2023-11-12 02:18:10,775 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3806] [2023-11-12 02:18:10,776 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3828] [2023-11-12 02:18:10,920 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_85acfe5f-4e6d-4bb8-957a-d051816ec995/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2023-11-12 02:18:10,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:11,034 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,034 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,034 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:11,044 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:11,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11 WrapperNode [2023-11-12 02:18:11,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:11,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:11,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:11,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:11,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,299 INFO L138 Inliner]: procedures = 191, calls = 1310, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 3618 [2023-11-12 02:18:11,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:11,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:11,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:11,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:11,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:11,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:11,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:11,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:11,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (1/1) ... [2023-11-12 02:18:11,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:11,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:11,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:11,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85acfe5f-4e6d-4bb8-957a-d051816ec995/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:11,738 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-12 02:18:11,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-12 02:18:11,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-12 02:18:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-12 02:18:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-12 02:18:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-12 02:18:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:18:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:18:11,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:18:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:18:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-12 02:18:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-12 02:18:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-12 02:18:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-12 02:18:11,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 02:18:11,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 02:18:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-12 02:18:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-12 02:18:11,743 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-12 02:18:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-12 02:18:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 02:18:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 02:18:11,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:18:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:18:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-12 02:18:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-12 02:18:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2023-11-12 02:18:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2023-11-12 02:18:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-12 02:18:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-12 02:18:11,747 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-12 02:18:11,747 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-12 02:18:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-12 02:18:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-12 02:18:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-12 02:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-12 02:18:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-12 02:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-12 02:18:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 02:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 02:18:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:18:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-12 02:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-12 02:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-12 02:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-12 02:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-12 02:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-12 02:18:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-12 02:18:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 02:18:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-12 02:18:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-12 02:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-12 02:18:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-12 02:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-12 02:18:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-12 02:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-12 02:18:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-12 02:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-12 02:18:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-12 02:18:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-12 02:18:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-12 02:18:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-12 02:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-12 02:18:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-12 02:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-12 02:18:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-12 02:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-12 02:18:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-12 02:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-12 02:18:11,798 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-12 02:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 02:18:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 02:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-12 02:18:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-12 02:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 02:18:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 02:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-12 02:18:11,799 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-12 02:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-12 02:18:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-12 02:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-12 02:18:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-12 02:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 02:18:11,800 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 02:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-12 02:18:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-12 02:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 02:18:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 02:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 02:18:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 02:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 02:18:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 02:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-12 02:18:11,801 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-12 02:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-12 02:18:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-12 02:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-12 02:18:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-12 02:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 02:18:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 02:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-12 02:18:11,802 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-12 02:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-12 02:18:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-12 02:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-12 02:18:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-12 02:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 02:18:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 02:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-12 02:18:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-12 02:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-12 02:18:11,803 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-12 02:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-12 02:18:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-12 02:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-12 02:18:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-12 02:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-12 02:18:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-12 02:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-12 02:18:11,804 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-12 02:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 02:18:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 02:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-12 02:18:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-12 02:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:11,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-12 02:18:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-12 02:18:12,456 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:12,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:32,468 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:32,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:32,488 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:18:32,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:32 BoogieIcfgContainer [2023-11-12 02:18:32,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:32,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:32,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:32,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:32,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:08" (1/3) ... [2023-11-12 02:18:32,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721a654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:32, skipping insertion in model container [2023-11-12 02:18:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:11" (2/3) ... [2023-11-12 02:18:32,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721a654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:32, skipping insertion in model container [2023-11-12 02:18:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:32" (3/3) ... [2023-11-12 02:18:32,502 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2023-11-12 02:18:32,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:32,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:18:32,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:32,623 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;@3dfa810a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:32,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:18:32,636 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) [2023-11-12 02:18:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:18:32,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:32,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:32,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:32,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash -984991709, now seen corresponding path program 1 times [2023-11-12 02:18:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:32,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871108820] [2023-11-12 02:18:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:18:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:18:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:35,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:35,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871108820] [2023-11-12 02:18:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871108820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307610846] [2023-11-12 02:18:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:35,069 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) [2023-11-12 02:18:37,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:18:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:18:45,564 INFO L93 Difference]: Finished difference Result 4417 states and 6717 transitions. [2023-11-12 02:18:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:45,567 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 [2023-11-12 02:18:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:18:45,640 INFO L225 Difference]: With dead ends: 4417 [2023-11-12 02:18:45,640 INFO L226 Difference]: Without dead ends: 3053 [2023-11-12 02:18:45,663 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 [2023-11-12 02:18:45,669 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 3151 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 995 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3496 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:18:45,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3496 Valid, 3747 Invalid, 2732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [995 Valid, 1736 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2023-11-12 02:18:45,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-12 02:18:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2486. [2023-11-12 02:18:46,042 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) [2023-11-12 02:18:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3628 transitions. [2023-11-12 02:18:46,080 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3628 transitions. Word has length 17 [2023-11-12 02:18:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:18:46,080 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3628 transitions. [2023-11-12 02:18:46,081 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) [2023-11-12 02:18:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3628 transitions. [2023-11-12 02:18:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 02:18:46,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:18:46,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:46,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:46,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:18:46,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash -471115181, now seen corresponding path program 1 times [2023-11-12 02:18:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:46,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50079468] [2023-11-12 02:18:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:18:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-12 02:18:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50079468] [2023-11-12 02:18:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50079468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:47,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811510133] [2023-11-12 02:18:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:47,693 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) [2023-11-12 02:18:49,741 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 []