./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:23,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:23,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:22:23,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:23,265 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:23,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:23,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:23,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:23,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:22:23,334 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:22:23,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:23,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:23,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:23,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:23,339 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:23,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:23,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:22:23,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:23,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:23,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:22:23,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:23,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:22:23,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:22:23,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:23,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:23,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:23,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:22:23,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:23,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:23,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:23,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:23,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:22:23,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:22:23,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:22:23,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:23,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:23,352 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:22:23,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:23,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:23,353 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_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2023-11-21 22:22:23,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:23,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:23,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:23,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:23,715 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:23,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2023-11-21 22:22:26,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:27,555 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:27,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2023-11-21 22:22:27,604 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/data/b372a3734/99e56c272989416fb319f6cff29f104c/FLAGf053bc442 [2023-11-21 22:22:27,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/data/b372a3734/99e56c272989416fb319f6cff29f104c [2023-11-21 22:22:27,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:27,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:27,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:27,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:27,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:27,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:27" (1/1) ... [2023-11-21 22:22:27,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c03fef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:27, skipping insertion in model container [2023-11-21 22:22:27,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:27" (1/1) ... [2023-11-21 22:22:27,832 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:28,759 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_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2023-11-21 22:22:29,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:29,339 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:22:29,484 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5448] [2023-11-21 22:22:29,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5455] [2023-11-21 22:22:29,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5463-5464] [2023-11-21 22:22:29,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [5493] [2023-11-21 22:22:29,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [5500] [2023-11-21 22:22:29,517 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_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2023-11-21 22:22:29,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:29,878 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:22:29,886 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:22:29,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29 WrapperNode [2023-11-21 22:22:29,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:29,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:29,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:22:29,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:22:29,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:29,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,092 INFO L138 Inliner]: procedures = 160, calls = 878, calls flagged for inlining = 73, calls inlined = 73, statements flattened = 2631 [2023-11-21 22:22:30,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:30,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:22:30,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:22:30,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:22:30,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,141 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,717 INFO L187 HeapSplitter]: Split 526 memory accesses to 9 slices as follows [9, 2, 42, 9, 3, 19, 381, 42, 19] [2023-11-21 22:22:30,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:22:30,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:22:30,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:22:30,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:22:30,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (1/1) ... [2023-11-21 22:22:30,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:30,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:22:30,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd00e535-ad5d-40fa-bbdf-71cbcdcd3860/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:22:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-21 22:22:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-21 22:22:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2023-11-21 22:22:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2023-11-21 22:22:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_17 [2023-11-21 22:22:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_17 [2023-11-21 22:22:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2023-11-21 22:22:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2023-11-21 22:22:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-21 22:22:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-21 22:22:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 22:22:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 22:22:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:22:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:22:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:22:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:22:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:22:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:22:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:22:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-21 22:22:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-21 22:22:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-21 22:22:31,011 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-21 22:22:31,012 INFO L130 BoogieDeclarations]: Found specification of procedure can_free_echo_skb [2023-11-21 22:22:31,012 INFO L138 BoogieDeclarations]: Found implementation of procedure can_free_echo_skb [2023-11-21 22:22:31,012 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-21 22:22:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-21 22:22:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-21 22:22:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-21 22:22:31,013 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-21 22:22:31,013 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-21 22:22:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 22:22:31,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 22:22:31,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:22:31,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:22:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-21 22:22:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-21 22:22:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-21 22:22:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-21 22:22:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 22:22:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 22:22:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-21 22:22:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-21 22:22:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:22:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:22:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-21 22:22:31,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-21 22:22:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 22:22:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 22:22:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-21 22:22:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-21 22:22:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 22:22:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 22:22:31,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:22:31,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:22:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-21 22:22:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-21 22:22:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:22:31,023 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-21 22:22:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-21 22:22:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-21 22:22:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-21 22:22:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_4 [2023-11-21 22:22:31,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_4 [2023-11-21 22:22:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:22:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-21 22:22:31,026 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-21 22:22:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-21 22:22:31,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-21 22:22:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:22:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:22:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:22:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-21 22:22:31,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-21 22:22:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-21 22:22:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 22:22:31,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 22:22:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-21 22:22:31,029 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-21 22:22:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-21 22:22:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-21 22:22:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:22:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:22:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:22:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:22:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:22:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:22:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:22:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-21 22:22:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-21 22:22:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-21 22:22:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-21 22:22:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-21 22:22:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-21 22:22:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-21 22:22:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-21 22:22:31,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:22:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:22:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:22:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:22:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:22:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:22:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:22:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:22:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-21 22:22:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-21 22:22:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-21 22:22:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-21 22:22:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2023-11-21 22:22:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2023-11-21 22:22:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 22:22:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 22:22:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-21 22:22:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-21 22:22:31,038 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_send_msg [2023-11-21 22:22:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_send_msg [2023-11-21 22:22:31,038 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-21 22:22:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-21 22:22:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 22:22:31,039 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 22:22:31,039 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-21 22:22:31,040 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-21 22:22:31,040 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-21 22:22:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-21 22:22:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-21 22:22:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-21 22:22:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-21 22:22:31,041 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-21 22:22:31,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-21 22:22:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-21 22:22:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-21 22:22:31,042 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-21 22:22:31,042 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-21 22:22:31,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-21 22:22:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:22:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:22:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:22:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:22:31,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:22:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:22:31,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:22:31,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:22:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:22:31,051 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-21 22:22:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-21 22:22:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-21 22:22:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-21 22:22:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-21 22:22:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-21 22:22:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_disconnect [2023-11-21 22:22:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_disconnect [2023-11-21 22:22:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:22:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:22:31,616 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:22:31,622 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:22:31,742 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 22:22:32,006 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-21 22:22:33,868 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:22:35,112 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:22:35,113 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:22:35,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:35 BoogieIcfgContainer [2023-11-21 22:22:35,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:22:35,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:22:35,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:22:35,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:22:35,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:22:27" (1/3) ... [2023-11-21 22:22:35,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a9b4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:35, skipping insertion in model container [2023-11-21 22:22:35,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:29" (2/3) ... [2023-11-21 22:22:35,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a9b4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:35, skipping insertion in model container [2023-11-21 22:22:35,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:35" (3/3) ... [2023-11-21 22:22:35,129 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2023-11-21 22:22:35,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:22:35,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:22:35,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:35,254 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e5c1e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:35,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:22:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 591 states, 373 states have (on average 1.3726541554959786) internal successors, (512), 401 states have internal predecessors, (512), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 157 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-21 22:22:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-21 22:22:35,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:35,279 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2023-11-21 22:22:35,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:35,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 47130269, now seen corresponding path program 1 times [2023-11-21 22:22:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535251956] [2023-11-21 22:22:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:35,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:22:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 22:22:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:22:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:22:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 22:22:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:22:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:22:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:22:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-21 22:22:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535251956] [2023-11-21 22:22:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535251956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:22:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843595350] [2023-11-21 22:22:36,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:36,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:22:36,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:36,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:22:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:22:36,519 INFO L87 Difference]: Start difference. First operand has 591 states, 373 states have (on average 1.3726541554959786) internal successors, (512), 401 states have internal predecessors, (512), 167 states have call successors, (167), 51 states have call predecessors, (167), 49 states have return successors, (158), 157 states have call predecessors, (158), 158 states have call successors, (158) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-21 22:22:41,083 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 [] [2023-11-21 22:22:43,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:45,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:47,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:49,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:52,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:54,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:56,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:22:58,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:00,273 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 [] [2023-11-21 22:23:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:00,308 INFO L93 Difference]: Finished difference Result 1843 states and 2650 transitions. [2023-11-21 22:23:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 78 [2023-11-21 22:23:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:00,340 INFO L225 Difference]: With dead ends: 1843 [2023-11-21 22:23:00,341 INFO L226 Difference]: Without dead ends: 1251 [2023-11-21 22:23:00,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:23:00,354 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 1005 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 445 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:00,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1460 Invalid, 1243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [445 Valid, 788 Invalid, 10 Unknown, 0 Unchecked, 23.4s Time] [2023-11-21 22:23:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-11-21 22:23:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1113. [2023-11-21 22:23:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 718 states have (on average 1.3454038997214484) internal successors, (966), 748 states have internal predecessors, (966), 298 states have call successors, (298), 97 states have call predecessors, (298), 96 states have return successors, (293), 291 states have call predecessors, (293), 293 states have call successors, (293) [2023-11-21 22:23:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1557 transitions. [2023-11-21 22:23:00,567 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1557 transitions. Word has length 78 [2023-11-21 22:23:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:00,568 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1557 transitions. [2023-11-21 22:23:00,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-21 22:23:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1557 transitions. [2023-11-21 22:23:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:23:00,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:00,575 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-11-21 22:23:00,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:23:00,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:00,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1611050055, now seen corresponding path program 1 times [2023-11-21 22:23:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:00,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892842443] [2023-11-21 22:23:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:23:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:23:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 22:23:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:23:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:23:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 22:23:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:23:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:23:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:23:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 22:23:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-21 22:23:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892842443] [2023-11-21 22:23:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892842443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:23:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992633866] [2023-11-21 22:23:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:23:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:23:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:23:01,576 INFO L87 Difference]: Start difference. First operand 1113 states and 1557 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-21 22:23:05,798 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 [] [2023-11-21 22:23:07,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:09,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:12,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:15,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:15,430 INFO L93 Difference]: Finished difference Result 1945 states and 2770 transitions. [2023-11-21 22:23:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:15,431 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2023-11-21 22:23:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:15,451 INFO L225 Difference]: With dead ends: 1945 [2023-11-21 22:23:15,451 INFO L226 Difference]: Without dead ends: 1942 [2023-11-21 22:23:15,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:23:15,457 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 614 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 287 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:15,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1366 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 791 Invalid, 5 Unknown, 0 Unchecked, 13.5s Time] [2023-11-21 22:23:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2023-11-21 22:23:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1758. [2023-11-21 22:23:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1141 states have (on average 1.3523225241016652) internal successors, (1543), 1183 states have internal predecessors, (1543), 458 states have call successors, (458), 161 states have call predecessors, (458), 158 states have return successors, (453), 445 states have call predecessors, (453), 453 states have call successors, (453) [2023-11-21 22:23:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2454 transitions. [2023-11-21 22:23:15,620 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2454 transitions. Word has length 87 [2023-11-21 22:23:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2454 transitions. [2023-11-21 22:23:15,621 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-21 22:23:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2454 transitions. [2023-11-21 22:23:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:23:15,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:15,625 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2023-11-21 22:23:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:23:15,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:15,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1597391013, now seen corresponding path program 1 times [2023-11-21 22:23:15,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737857615] [2023-11-21 22:23:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:23:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-21 22:23:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 22:23:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:23:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:23:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 22:23:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:23:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:23:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:23:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 22:23:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-21 22:23:16,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737857615] [2023-11-21 22:23:16,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737857615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:16,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:16,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:23:16,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536156221] [2023-11-21 22:23:16,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:16,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:23:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:23:16,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:23:16,362 INFO L87 Difference]: Start difference. First operand 1758 states and 2454 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-21 22:23:20,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 22:23:22,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []