./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4230dcd825d3a8c4f2993182656471f5db1d08c7b5deb32f72a092968196ad9c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:24,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:24,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:14:24,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:24,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:24,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:24,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:24,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:24,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:24,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:24,475 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:24,476 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:24,476 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:24,477 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:24,477 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:24,478 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:24,479 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:24,479 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:24,480 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:24,480 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:24,481 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:24,482 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:24,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:24,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:14:24,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:24,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:24,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:14:24,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:24,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:14:24,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:14:24,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:24,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:24,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:24,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:24,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:24,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:24,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:24,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:14:24,489 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:24,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:24,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:24,489 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:14:24,490 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:24,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:24,490 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4230dcd825d3a8c4f2993182656471f5db1d08c7b5deb32f72a092968196ad9c [2023-11-23 21:14:24,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:24,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:24,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:24,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:24,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:24,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2023-11-23 21:14:27,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:28,581 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:28,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2023-11-23 21:14:28,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/data/e55a75d21/499683790f464c91960998d81eb04b17/FLAGa63b6daa2 [2023-11-23 21:14:28,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/data/e55a75d21/499683790f464c91960998d81eb04b17 [2023-11-23 21:14:28,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:28,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:28,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:28,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:28,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:28,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:28" (1/1) ... [2023-11-23 21:14:28,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7145e278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:28, skipping insertion in model container [2023-11-23 21:14:28,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:28" (1/1) ... [2023-11-23 21:14:28,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:31,165 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_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[256140,256153] [2023-11-23 21:14:31,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:31,237 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:31,375 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"); [5350] [2023-11-23 21:14:31,377 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)); [5357] [2023-11-23 21:14:31,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5364] [2023-11-23 21:14:31,391 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/076166e/linux-drivers-clk1/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5404-5405] [2023-11-23 21:14:31,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5410-5412] [2023-11-23 21:14:31,680 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_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[256140,256153] [2023-11-23 21:14:31,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:31,852 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:31,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31 WrapperNode [2023-11-23 21:14:31,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:31,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:31,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:31,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:31,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:31,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,203 INFO L138 Inliner]: procedures = 287, calls = 1452, calls flagged for inlining = 172, calls inlined = 168, statements flattened = 4296 [2023-11-23 21:14:32,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:32,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:32,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:32,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:32,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:32,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:32,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:32,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:32,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (1/1) ... [2023-11-23 21:14:32,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:32,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:32,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:32,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7977030b-e4f6-4e06-b104-4f2ce6aeb1f5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:14:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:14:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:14:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:14:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:14:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:14:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:14:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:14:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2023-11-23 21:14:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2023-11-23 21:14:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:14:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:14:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2023-11-23 21:14:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2023-11-23 21:14:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:14:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:14:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2023-11-23 21:14:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2023-11-23 21:14:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 21:14:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 21:14:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2023-11-23 21:14:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2023-11-23 21:14:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2023-11-23 21:14:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2023-11-23 21:14:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2023-11-23 21:14:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:14:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:14:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2023-11-23 21:14:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2023-11-23 21:14:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2023-11-23 21:14:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2023-11-23 21:14:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:14:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:14:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2023-11-23 21:14:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2023-11-23 21:14:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2023-11-23 21:14:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2023-11-23 21:14:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:14:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:14:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2023-11-23 21:14:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2023-11-23 21:14:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2023-11-23 21:14:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2023-11-23 21:14:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:14:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:14:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 21:14:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 21:14:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:14:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:14:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:14:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:14:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2023-11-23 21:14:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2023-11-23 21:14:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:14:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:14:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:14:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:14:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-23 21:14:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-23 21:14:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:14:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:14:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2023-11-23 21:14:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2023-11-23 21:14:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:14:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2023-11-23 21:14:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:14:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:14:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:14:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:14:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:14:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2023-11-23 21:14:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2023-11-23 21:14:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2023-11-23 21:14:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2023-11-23 21:14:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2023-11-23 21:14:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2023-11-23 21:14:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:14:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2023-11-23 21:14:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2023-11-23 21:14:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2023-11-23 21:14:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2023-11-23 21:14:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:14:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:14:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-11-23 21:14:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2023-11-23 21:14:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:14:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:14:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2023-11-23 21:14:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2023-11-23 21:14:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2023-11-23 21:14:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2023-11-23 21:14:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:14:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2023-11-23 21:14:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2023-11-23 21:14:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2023-11-23 21:14:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2023-11-23 21:14:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:14:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:14:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2023-11-23 21:14:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2023-11-23 21:14:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2023-11-23 21:14:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:14:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:14:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:14:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2023-11-23 21:14:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2023-11-23 21:14:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:14:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:14:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:14:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:14:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2023-11-23 21:14:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2023-11-23 21:14:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 21:14:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 21:14:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2023-11-23 21:14:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2023-11-23 21:14:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:14:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:14:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2023-11-23 21:14:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2023-11-23 21:14:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:14:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:14:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:14:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:14:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2023-11-23 21:14:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2023-11-23 21:14:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2023-11-23 21:14:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2023-11-23 21:14:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-23 21:14:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-23 21:14:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2023-11-23 21:14:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2023-11-23 21:14:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2023-11-23 21:14:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2023-11-23 21:14:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:14:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:14:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:14:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:14:33,347 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:33,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:33,936 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:14:42,373 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:44,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:44,377 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:14:44,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:44 BoogieIcfgContainer [2023-11-23 21:14:44,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:44,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:44,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:44,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:44,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:28" (1/3) ... [2023-11-23 21:14:44,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf57a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:44, skipping insertion in model container [2023-11-23 21:14:44,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:31" (2/3) ... [2023-11-23 21:14:44,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf57a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:44, skipping insertion in model container [2023-11-23 21:14:44,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:44" (3/3) ... [2023-11-23 21:14:44,390 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2023-11-23 21:14:44,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:44,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:44,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:44,516 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=FINITE_AUTOMATA, 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;@a2143e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:44,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 943 states, 542 states have (on average 1.2749077490774907) internal successors, (691), 579 states have internal predecessors, (691), 330 states have call successors, (330), 70 states have call predecessors, (330), 69 states have return successors, (323), 316 states have call predecessors, (323), 323 states have call successors, (323) [2023-11-23 21:14:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:14:44,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:44,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-23 21:14:44,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:44,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1865729008, now seen corresponding path program 1 times [2023-11-23 21:14:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:44,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185184429] [2023-11-23 21:14:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:14:54,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185184429] [2023-11-23 21:14:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185184429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:54,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:14:54,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699450517] [2023-11-23 21:14:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:54,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:14:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:14:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:14:54,908 INFO L87 Difference]: Start difference. First operand has 943 states, 542 states have (on average 1.2749077490774907) internal successors, (691), 579 states have internal predecessors, (691), 330 states have call successors, (330), 70 states have call predecessors, (330), 69 states have return successors, (323), 316 states have call predecessors, (323), 323 states have call successors, (323) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:14:57,009 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 [] [2023-11-23 21:14:59,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:01,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:15:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:09,876 INFO L93 Difference]: Finished difference Result 1883 states and 2707 transitions. [2023-11-23 21:15:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:15:09,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-11-23 21:15:09,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:09,954 INFO L225 Difference]: With dead ends: 1883 [2023-11-23 21:15:09,955 INFO L226 Difference]: Without dead ends: 1847 [2023-11-23 21:15:09,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:15:09,968 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 1332 mSDsluCounter, 3817 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:09,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 5162 Invalid, 860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 854 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2023-11-23 21:15:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2023-11-23 21:15:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1844. [2023-11-23 21:15:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1067 states have (on average 1.2624179943767573) internal successors, (1347), 1130 states have internal predecessors, (1347), 640 states have call successors, (640), 139 states have call predecessors, (640), 136 states have return successors, (655), 619 states have call predecessors, (655), 634 states have call successors, (655) [2023-11-23 21:15:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2642 transitions. [2023-11-23 21:15:10,256 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2642 transitions. Word has length 35 [2023-11-23 21:15:10,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:10,257 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2642 transitions. [2023-11-23 21:15:10,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 21:15:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2642 transitions. [2023-11-23 21:15:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 21:15:10,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:10,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-23 21:15:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:10,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:15:10,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1359935789, now seen corresponding path program 1 times [2023-11-23 21:15:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322236235] [2023-11-23 21:15:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:15:18,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322236235] [2023-11-23 21:15:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322236235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:15:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380841368] [2023-11-23 21:15:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:15:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:15:18,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:18,698 INFO L87 Difference]: Start difference. First operand 1844 states and 2642 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)