./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:00:34,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:00:34,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:00:34,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:00:34,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:00:34,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:00:34,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:00:34,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:00:34,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:00:34,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:00:34,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:00:34,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:00:34,658 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:00:34,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:00:34,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:00:34,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:00:34,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:00:34,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:00:34,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:00:34,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:00:34,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:00:34,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:00:34,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:00:34,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:00:34,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:00:34,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:34,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:00:34,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:00:34,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:00:34,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:00:34,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:00:34,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:00:34,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:00:34,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:00:34,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:00:34,669 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:00:34,669 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_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2023-11-06 22:00:34,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:00:35,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:00:35,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:00:35,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:00:35,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:00:35,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-06 22:00:38,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:00:38,766 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:00:38,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-06 22:00:38,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/data/ba7ab8fa7/b06e01adc3d74b1896cdbacce033bd48/FLAG17c61d7c8 [2023-11-06 22:00:38,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/data/ba7ab8fa7/b06e01adc3d74b1896cdbacce033bd48 [2023-11-06 22:00:38,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:00:38,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:00:38,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:38,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:00:38,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:00:38,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:38" (1/1) ... [2023-11-06 22:00:38,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8a6e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:38, skipping insertion in model container [2023-11-06 22:00:38,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:38" (1/1) ... [2023-11-06 22:00:38,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:00:40,458 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_c17581a0-739f-4657-b013-5d6bffa944b4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2023-11-06 22:00:40,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:40,531 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:00:40,605 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] [2023-11-06 22:00:40,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2794] [2023-11-06 22:00:40,608 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2797] [2023-11-06 22:00:40,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2800] [2023-11-06 22:00:40,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2803] [2023-11-06 22:00:40,669 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3806] [2023-11-06 22:00:40,671 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3828] [2023-11-06 22:00:40,796 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_c17581a0-739f-4657-b013-5d6bffa944b4/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2023-11-06 22:00:40,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:00:40,892 WARN L672 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,892 WARN L672 CHandler]: The function kmem_cache_alloc_notrace is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,893 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:00:40,900 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:00:40,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40 WrapperNode [2023-11-06 22:00:40,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:00:40,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:40,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:00:40,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:00:40,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,187 INFO L138 Inliner]: procedures = 191, calls = 1310, calls flagged for inlining = 86, calls inlined = 86, statements flattened = 3618 [2023-11-06 22:00:41,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:00:41,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:00:41,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:00:41,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:00:41,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:00:41,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:00:41,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:00:41,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:00:41,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (1/1) ... [2023-11-06 22:00:41,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:00:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:41,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:00:41,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:00:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2023-11-06 22:00:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2023-11-06 22:00:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 22:00:41,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-11-06 22:00:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-06 22:00:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-06 22:00:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:00:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 22:00:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:00:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:00:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2023-11-06 22:00:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2023-11-06 22:00:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2023-11-06 22:00:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2023-11-06 22:00:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 22:00:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 22:00:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2023-11-06 22:00:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2023-11-06 22:00:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2023-11-06 22:00:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2023-11-06 22:00:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 22:00:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 22:00:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:00:41,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:00:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2023-11-06 22:00:41,580 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2023-11-06 22:00:41,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2023-11-06 22:00:41,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2023-11-06 22:00:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2023-11-06 22:00:41,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2023-11-06 22:00:41,581 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-06 22:00:41,582 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-06 22:00:41,582 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2023-11-06 22:00:41,583 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2023-11-06 22:00:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2023-11-06 22:00:41,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2023-11-06 22:00:41,583 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2023-11-06 22:00:41,584 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2023-11-06 22:00:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:00:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 22:00:41,584 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 22:00:41,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:00:41,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:00:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2023-11-06 22:00:41,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2023-11-06 22:00:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2023-11-06 22:00:41,585 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2023-11-06 22:00:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2023-11-06 22:00:41,585 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2023-11-06 22:00:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-06 22:00:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-06 22:00:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:00:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:00:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2023-11-06 22:00:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2023-11-06 22:00:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:00:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-06 22:00:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2023-11-06 22:00:41,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2023-11-06 22:00:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2023-11-06 22:00:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 22:00:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 22:00:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2023-11-06 22:00:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2023-11-06 22:00:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-06 22:00:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-06 22:00:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:00:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2023-11-06 22:00:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2023-11-06 22:00:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2023-11-06 22:00:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2023-11-06 22:00:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:00:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:00:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-06 22:00:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-06 22:00:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 22:00:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2023-11-06 22:00:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2023-11-06 22:00:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2023-11-06 22:00:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2023-11-06 22:00:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:00:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2023-11-06 22:00:41,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2023-11-06 22:00:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2023-11-06 22:00:41,595 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2023-11-06 22:00:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2023-11-06 22:00:41,595 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2023-11-06 22:00:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-06 22:00:41,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-06 22:00:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-06 22:00:41,596 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-06 22:00:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-06 22:00:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-06 22:00:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-06 22:00:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-06 22:00:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:00:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:00:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-06 22:00:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-06 22:00:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2023-11-06 22:00:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2023-11-06 22:00:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:00:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:00:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2023-11-06 22:00:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2023-11-06 22:00:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-06 22:00:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-06 22:00:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-06 22:00:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-06 22:00:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:00:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:00:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-06 22:00:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-06 22:00:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 22:00:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 22:00:41,602 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2023-11-06 22:00:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2023-11-06 22:00:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-06 22:00:41,603 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-06 22:00:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-06 22:00:41,603 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-06 22:00:41,603 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 22:00:41,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 22:00:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-06 22:00:41,604 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-06 22:00:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2023-11-06 22:00:41,604 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2023-11-06 22:00:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2023-11-06 22:00:41,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2023-11-06 22:00:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:00:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-06 22:00:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-06 22:00:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-06 22:00:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2023-11-06 22:00:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2023-11-06 22:00:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-06 22:00:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-06 22:00:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2023-11-06 22:00:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2023-11-06 22:00:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:00:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-06 22:00:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-06 22:00:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-06 22:00:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-06 22:00:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 22:00:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-06 22:00:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-06 22:00:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-06 22:00:41,615 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-06 22:00:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:00:41,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:00:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 22:00:41,618 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 22:00:42,299 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:00:42,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:01:02,367 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:01:02,395 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:01:02,396 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:01:02,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:02 BoogieIcfgContainer [2023-11-06 22:01:02,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:01:02,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:01:02,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:01:02,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:01:02,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:38" (1/3) ... [2023-11-06 22:01:02,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344eebb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:02, skipping insertion in model container [2023-11-06 22:01:02,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:40" (2/3) ... [2023-11-06 22:01:02,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344eebb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:02, skipping insertion in model container [2023-11-06 22:01:02,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:02" (3/3) ... [2023-11-06 22:01:02,418 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2023-11-06 22:01:02,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:01:02,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:01:02,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:01:02,622 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=LoopsAndPotentialCycles, 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;@530fed12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:01:02,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:01:02,636 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) [2023-11-06 22:01:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 22:01:02,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:02,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:02,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:02,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -984991709, now seen corresponding path program 1 times [2023-11-06 22:01:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401967740] [2023-11-06 22:01:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:02,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:01:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:01:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401967740] [2023-11-06 22:01:05,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401967740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:05,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:05,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:01:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934486823] [2023-11-06 22:01:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:05,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:05,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:05,971 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) [2023-11-06 22:01:08,108 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 [] [2023-11-06 22:01:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:16,422 INFO L93 Difference]: Finished difference Result 4417 states and 6717 transitions. [2023-11-06 22:01:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:01:16,425 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 [2023-11-06 22:01:16,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:16,479 INFO L225 Difference]: With dead ends: 4417 [2023-11-06 22:01:16,479 INFO L226 Difference]: Without dead ends: 3053 [2023-11-06 22:01:16,495 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 [2023-11-06 22:01:16,499 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 3158 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 1014 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:16,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 3643 Invalid, 2750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1014 Valid, 1735 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2023-11-06 22:01:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-11-06 22:01:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2486. [2023-11-06 22:01:16,762 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) [2023-11-06 22:01:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3628 transitions. [2023-11-06 22:01:16,794 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3628 transitions. Word has length 17 [2023-11-06 22:01:16,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:16,795 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 3628 transitions. [2023-11-06 22:01:16,795 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) [2023-11-06 22:01:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3628 transitions. [2023-11-06 22:01:16,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:01:16,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:16,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:01:16,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:16,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash -471115181, now seen corresponding path program 1 times [2023-11-06 22:01:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:16,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003752112] [2023-11-06 22:01:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:16,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:01:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:01:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:18,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:18,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003752112] [2023-11-06 22:01:18,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003752112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:18,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:18,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:01:18,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666099875] [2023-11-06 22:01:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:18,302 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) [2023-11-06 22:01:20,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:01:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:29,474 INFO L93 Difference]: Finished difference Result 7279 states and 10857 transitions. [2023-11-06 22:01:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:01:29,475 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 18 [2023-11-06 22:01:29,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:29,542 INFO L225 Difference]: With dead ends: 7279 [2023-11-06 22:01:29,542 INFO L226 Difference]: Without dead ends: 6064 [2023-11-06 22:01:29,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:01:29,554 INFO L413 NwaCegarLoop]: 3002 mSDtfsCounter, 2621 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 591 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 5969 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:29,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 5969 Invalid, 2941 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [591 Valid, 2349 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2023-11-06 22:01:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2023-11-06 22:01:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 4930. [2023-11-06 22:01:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3356 states have (on average 1.3584624553039333) internal successors, (4559), 3466 states have internal predecessors, (4559), 1326 states have call successors, (1326), 251 states have call predecessors, (1326), 247 states have return successors, (1314), 1300 states have call predecessors, (1314), 1314 states have call successors, (1314) [2023-11-06 22:01:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7199 transitions. [2023-11-06 22:01:29,972 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7199 transitions. Word has length 18 [2023-11-06 22:01:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:29,973 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7199 transitions. [2023-11-06 22:01:29,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 22:01:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7199 transitions. [2023-11-06 22:01:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:01:29,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:29,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:01:29,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:29,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 671835386, now seen corresponding path program 1 times [2023-11-06 22:01:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630349511] [2023-11-06 22:01:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:01:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:01:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:01:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:01:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:01:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630349511] [2023-11-06 22:01:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630349511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:01:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659387739] [2023-11-06 22:01:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:01:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:01:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:01:31,643 INFO L87 Difference]: Start difference. First operand 4930 states and 7199 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:01:33,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:01:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:01:41,817 INFO L93 Difference]: Finished difference Result 13266 states and 19830 transitions. [2023-11-06 22:01:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:01:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-06 22:01:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:01:41,943 INFO L225 Difference]: With dead ends: 13266 [2023-11-06 22:01:41,944 INFO L226 Difference]: Without dead ends: 12036 [2023-11-06 22:01:41,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:01:41,966 INFO L413 NwaCegarLoop]: 2503 mSDtfsCounter, 2597 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 800 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 4765 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 800 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:01:41,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2939 Valid, 4765 Invalid, 2793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [800 Valid, 1992 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2023-11-06 22:01:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2023-11-06 22:01:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 9765. [2023-11-06 22:01:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9765 states, 6650 states have (on average 1.3595488721804512) internal successors, (9041), 6866 states have internal predecessors, (9041), 2623 states have call successors, (2623), 497 states have call predecessors, (2623), 491 states have return successors, (2609), 2577 states have call predecessors, (2609), 2609 states have call successors, (2609) [2023-11-06 22:01:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 14273 transitions. [2023-11-06 22:01:42,944 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 14273 transitions. Word has length 40 [2023-11-06 22:01:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:01:42,945 INFO L495 AbstractCegarLoop]: Abstraction has 9765 states and 14273 transitions. [2023-11-06 22:01:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:01:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 14273 transitions. [2023-11-06 22:01:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:01:42,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:01:42,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:42,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:01:42,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:01:42,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1308621272, now seen corresponding path program 1 times [2023-11-06 22:01:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707793912] [2023-11-06 22:01:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:42,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:01:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:01:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:01:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:01:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:01:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:01:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707793912] [2023-11-06 22:01:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707793912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:01:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245586606] [2023-11-06 22:01:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:01:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:01:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:01:47,117 INFO L87 Difference]: Start difference. First operand 9765 states and 14273 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:01:49,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:02:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:02:19,276 INFO L93 Difference]: Finished difference Result 27035 states and 40316 transitions. [2023-11-06 22:02:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:02:19,278 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2023-11-06 22:02:19,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:02:19,414 INFO L225 Difference]: With dead ends: 27035 [2023-11-06 22:02:19,415 INFO L226 Difference]: Without dead ends: 20977 [2023-11-06 22:02:19,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:02:19,460 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 3007 mSDsluCounter, 23123 mSDsCounter, 0 mSdLazyCounter, 12573 mSolverCounterSat, 1208 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 25335 SdHoareTripleChecker+Invalid, 13782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 12573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:02:19,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 25335 Invalid, 13782 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1208 Valid, 12573 Invalid, 1 Unknown, 0 Unchecked, 29.7s Time] [2023-11-06 22:02:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20977 states. [2023-11-06 22:02:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20977 to 17007. [2023-11-06 22:02:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17007 states, 11576 states have (on average 1.360487214927436) internal successors, (15749), 11949 states have internal predecessors, (15749), 4571 states have call successors, (4571), 866 states have call predecessors, (4571), 859 states have return successors, (4560), 4499 states have call predecessors, (4560), 4556 states have call successors, (4560) [2023-11-06 22:02:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17007 states to 17007 states and 24880 transitions. [2023-11-06 22:02:20,706 INFO L78 Accepts]: Start accepts. Automaton has 17007 states and 24880 transitions. Word has length 43 [2023-11-06 22:02:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:02:20,707 INFO L495 AbstractCegarLoop]: Abstraction has 17007 states and 24880 transitions. [2023-11-06 22:02:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 22:02:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 17007 states and 24880 transitions. [2023-11-06 22:02:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:02:20,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:02:20,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:02:20,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:02:20,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:02:20,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:02:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 964900599, now seen corresponding path program 1 times [2023-11-06 22:02:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:02:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105407677] [2023-11-06 22:02:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:02:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:02:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:02:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:02:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:02:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:02:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:02:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:02:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:02:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:02:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:02:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105407677] [2023-11-06 22:02:26,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105407677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:02:26,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:02:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 22:02:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718820243] [2023-11-06 22:02:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:02:26,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:02:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:02:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:02:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:02:26,406 INFO L87 Difference]: Start difference. First operand 17007 states and 24880 transitions. Second operand has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:02:28,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:02:30,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:02:32,540 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 [] [2023-11-06 22:03:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:03:08,361 INFO L93 Difference]: Finished difference Result 25082 states and 37590 transitions. [2023-11-06 22:03:08,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:03:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2023-11-06 22:03:08,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:03:08,510 INFO L225 Difference]: With dead ends: 25082 [2023-11-06 22:03:08,510 INFO L226 Difference]: Without dead ends: 23889 [2023-11-06 22:03:08,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:03:08,538 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 3347 mSDsluCounter, 17605 mSDsCounter, 0 mSdLazyCounter, 13539 mSolverCounterSat, 1359 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3563 SdHoareTripleChecker+Valid, 19065 SdHoareTripleChecker+Invalid, 14901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 13539 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:03:08,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3563 Valid, 19065 Invalid, 14901 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1359 Valid, 13539 Invalid, 3 Unknown, 0 Unchecked, 38.4s Time] [2023-11-06 22:03:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23889 states. [2023-11-06 22:03:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23889 to 18183. [2023-11-06 22:03:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18183 states, 12375 states have (on average 1.3608888888888888) internal successors, (16841), 12775 states have internal predecessors, (16841), 4888 states have call successors, (4888), 926 states have call predecessors, (4888), 919 states have return successors, (4877), 4811 states have call predecessors, (4877), 4873 states have call successors, (4877) [2023-11-06 22:03:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 26606 transitions. [2023-11-06 22:03:10,502 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 26606 transitions. Word has length 50 [2023-11-06 22:03:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:03:10,505 INFO L495 AbstractCegarLoop]: Abstraction has 18183 states and 26606 transitions. [2023-11-06 22:03:10,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 12 states have internal predecessors, (37), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-06 22:03:10,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 26606 transitions. [2023-11-06 22:03:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:03:10,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:10,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:10,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:03:10,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:03:10,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1320089785, now seen corresponding path program 1 times [2023-11-06 22:03:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:10,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514022800] [2023-11-06 22:03:10,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:10,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:03:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:03:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-06 22:03:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:03:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 22:03:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:03:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:03:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:12,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514022800] [2023-11-06 22:03:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514022800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:12,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:03:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388370796] [2023-11-06 22:03:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:12,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:03:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:03:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:03:12,310 INFO L87 Difference]: Start difference. First operand 18183 states and 26606 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:03:14,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:16,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:03:25,122 INFO L93 Difference]: Finished difference Result 22422 states and 33632 transitions. [2023-11-06 22:03:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:03:25,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-06 22:03:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:03:25,276 INFO L225 Difference]: With dead ends: 22422 [2023-11-06 22:03:25,276 INFO L226 Difference]: Without dead ends: 22401 [2023-11-06 22:03:25,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:03:25,288 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2739 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 703 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:03:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 5284 Invalid, 2763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [703 Valid, 2058 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2023-11-06 22:03:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22401 states. [2023-11-06 22:03:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22401 to 18147. [2023-11-06 22:03:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18147 states, 12351 states have (on average 1.3608614687069873) internal successors, (16808), 12751 states have internal predecessors, (16808), 4880 states have call successors, (4880), 922 states have call predecessors, (4880), 915 states have return successors, (4871), 4803 states have call predecessors, (4871), 4867 states have call successors, (4871) [2023-11-06 22:03:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 26559 transitions. [2023-11-06 22:03:27,441 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 26559 transitions. Word has length 57 [2023-11-06 22:03:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:03:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 18147 states and 26559 transitions. [2023-11-06 22:03:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:03:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 26559 transitions. [2023-11-06 22:03:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:03:27,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:27,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:03:27,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:03:27,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -11671344, now seen corresponding path program 1 times [2023-11-06 22:03:27,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:27,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275422815] [2023-11-06 22:03:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:03:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:03:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:03:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:03:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:03:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:03:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:03:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:03:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:03:31,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275422815] [2023-11-06 22:03:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275422815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:03:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950502232] [2023-11-06 22:03:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:31,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:03:31,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:31,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:03:31,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c17581a0-739f-4657-b013-5d6bffa944b4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:03:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:36,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 22:03:36,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:37,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:03:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950502232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:37,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:03:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2023-11-06 22:03:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238226159] [2023-11-06 22:03:37,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:37,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:03:37,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:37,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:03:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:03:37,812 INFO L87 Difference]: Start difference. First operand 18147 states and 26559 transitions. Second operand has 11 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 22:03:39,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:41,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:43,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:45,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:48,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:50,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:52,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:03:54,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []