./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX --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 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:09:01,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:09:01,987 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:09:01,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:09:01,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:09:02,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:09:02,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:09:02,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:09:02,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:09:02,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:09:02,025 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:09:02,026 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:09:02,026 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:09:02,027 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:09:02,028 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:09:02,028 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:09:02,029 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:09:02,030 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:09:02,030 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:09:02,031 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:09:02,031 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:09:02,032 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:09:02,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:09:02,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:09:02,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:09:02,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:09:02,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:09:02,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:09:02,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:09:02,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:09:02,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:09:02,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:09:02,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:09:02,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:09:02,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:09:02,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:09:02,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:09:02,041 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:09:02,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:09:02,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:09:02,042 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:09:02,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:09:02,043 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_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2023-11-12 00:09:02,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:09:02,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:09:02,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:09:02,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:09:02,406 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:09:02,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-12 00:09:05,683 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:09:06,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:09:06,350 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-12 00:09:06,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/data/23a5a7dff/e079936157cb410295ef53131923f4c7/FLAG150d39bb4 [2023-11-12 00:09:06,424 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/data/23a5a7dff/e079936157cb410295ef53131923f4c7 [2023-11-12 00:09:06,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:09:06,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:09:06,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:09:06,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:09:06,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:09:06,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:09:06" (1/1) ... [2023-11-12 00:09:06,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6034953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:06, skipping insertion in model container [2023-11-12 00:09:06,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:09:06" (1/1) ... [2023-11-12 00:09:06,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:09:08,699 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_9c93ff0b-2967-4401-9f39-0a23f8d16f80/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2023-11-12 00:09:08,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:09:08,968 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:09:09,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3258] [2023-11-12 00:09:09,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3265] [2023-11-12 00:09:09,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3272] [2023-11-12 00:09:09,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3305] [2023-11-12 00:09:09,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3308] [2023-11-12 00:09:09,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3311] [2023-11-12 00:09:09,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3314] [2023-11-12 00:09:09,179 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4080] [2023-11-12 00:09:09,180 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4084] [2023-11-12 00:09:09,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4107] [2023-11-12 00:09:09,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4112] [2023-11-12 00:09:09,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4117] [2023-11-12 00:09:09,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4122] [2023-11-12 00:09:09,226 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4581] [2023-11-12 00:09:09,419 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_9c93ff0b-2967-4401-9f39-0a23f8d16f80/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2023-11-12 00:09:09,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:09:09,623 WARN L672 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:09:09,623 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:09:09,633 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:09:09,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09 WrapperNode [2023-11-12 00:09:09,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:09:09,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:09:09,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:09:09,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:09:09,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:09,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:09,983 INFO L138 Inliner]: procedures = 272, calls = 2588, calls flagged for inlining = 117, calls inlined = 96, statements flattened = 4210 [2023-11-12 00:09:09,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:09:09,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:09:09,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:09:09,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:09:09,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:09,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:09:10,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:09:10,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:09:10,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:09:10,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (1/1) ... [2023-11-12 00:09:10,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:09:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:09:10,320 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:09:10,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c93ff0b-2967-4401-9f39-0a23f8d16f80/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:09:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-12 00:09:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-12 00:09:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-12 00:09:10,371 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-12 00:09:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 00:09:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 00:09:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-12 00:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:09:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:09:10,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:09:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:09:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-12 00:09:10,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-12 00:09:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 00:09:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 00:09:10,378 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-12 00:09:10,378 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-12 00:09:10,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:09:10,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:09:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-12 00:09:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-12 00:09:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-12 00:09:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-12 00:09:10,380 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-12 00:09:10,380 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-12 00:09:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:09:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:09:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:09:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:09:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-12 00:09:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-12 00:09:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-12 00:09:10,381 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-12 00:09:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-12 00:09:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-12 00:09:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:09:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:09:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 00:09:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 00:09:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:09:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:09:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-12 00:09:10,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-12 00:09:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:09:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-12 00:09:10,384 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-12 00:09:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:09:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-12 00:09:10,385 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-12 00:09:10,385 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:09:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:09:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:09:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:09:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:09:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:09:10,386 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:09:10,386 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:09:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:09:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:09:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 00:09:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 00:09:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 00:09:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 00:09:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-12 00:09:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-12 00:09:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-12 00:09:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-12 00:09:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 00:09:10,388 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 00:09:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:09:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-12 00:09:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-12 00:09:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:09:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:09:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:09:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-12 00:09:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-12 00:09:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-12 00:09:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-12 00:09:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-12 00:09:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-12 00:09:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:09:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-12 00:09:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-12 00:09:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-12 00:09:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-12 00:09:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:09:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:09:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2023-11-12 00:09:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2023-11-12 00:09:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:09:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:09:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 00:09:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 00:09:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-12 00:09:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-12 00:09:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:09:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:09:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:09:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-12 00:09:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-12 00:09:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-12 00:09:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-12 00:09:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-12 00:09:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-12 00:09:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:09:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:09:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-12 00:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-12 00:09:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-12 00:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-12 00:09:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:09:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-12 00:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-12 00:09:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-12 00:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-12 00:09:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-12 00:09:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-12 00:09:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-12 00:09:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-12 00:09:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-12 00:09:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2023-11-12 00:09:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-12 00:09:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 00:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-12 00:09:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-12 00:09:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-12 00:09:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-12 00:09:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-12 00:09:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-12 00:09:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 00:09:10,404 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 00:09:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-12 00:09:10,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-12 00:09:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-12 00:09:10,406 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-12 00:09:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-12 00:09:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-12 00:09:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-12 00:09:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-12 00:09:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-12 00:09:10,414 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-12 00:09:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:09:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-12 00:09:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-12 00:09:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:09:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:09:11,205 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:09:11,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:09:11,868 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:09:19,234 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:09:20,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:09:20,260 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 00:09:20,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:09:20 BoogieIcfgContainer [2023-11-12 00:09:20,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:09:20,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:09:20,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:09:20,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:09:20,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:09:06" (1/3) ... [2023-11-12 00:09:20,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:09:20, skipping insertion in model container [2023-11-12 00:09:20,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:09:09" (2/3) ... [2023-11-12 00:09:20,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c18c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:09:20, skipping insertion in model container [2023-11-12 00:09:20,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:09:20" (3/3) ... [2023-11-12 00:09:20,286 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-12 00:09:20,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:09:20,313 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:09:20,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:09:20,422 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;@35049ce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:09:20,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:09:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 668 states have (on average 1.3308383233532934) internal successors, (889), 690 states have internal predecessors, (889), 358 states have call successors, (358), 68 states have call predecessors, (358), 67 states have return successors, (351), 350 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-12 00:09:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-12 00:09:20,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:20,466 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:20,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:20,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 132321754, now seen corresponding path program 1 times [2023-11-12 00:09:20,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:20,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975237234] [2023-11-12 00:09:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:20,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-12 00:09:21,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975237234] [2023-11-12 00:09:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975237234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:21,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397769595] [2023-11-12 00:09:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:22,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:22,059 INFO L87 Difference]: Start difference. First operand has 1095 states, 668 states have (on average 1.3308383233532934) internal successors, (889), 690 states have internal predecessors, (889), 358 states have call successors, (358), 68 states have call predecessors, (358), 67 states have return successors, (351), 350 states have call predecessors, (351), 351 states have call successors, (351) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:24,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:25,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:29,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:30,425 INFO L93 Difference]: Finished difference Result 3129 states and 4659 transitions. [2023-11-12 00:09:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:30,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-11-12 00:09:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:30,473 INFO L225 Difference]: With dead ends: 3129 [2023-11-12 00:09:30,474 INFO L226 Difference]: Without dead ends: 2055 [2023-11-12 00:09:30,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:30,496 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1466 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:30,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 2854 Invalid, 267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2023-11-12 00:09:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2023-11-12 00:09:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2041. [2023-11-12 00:09:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1256 states have (on average 1.3168789808917198) internal successors, (1654), 1277 states have internal predecessors, (1654), 654 states have call successors, (654), 131 states have call predecessors, (654), 130 states have return successors, (647), 644 states have call predecessors, (647), 647 states have call successors, (647) [2023-11-12 00:09:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2955 transitions. [2023-11-12 00:09:30,813 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2955 transitions. Word has length 167 [2023-11-12 00:09:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:30,817 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2955 transitions. [2023-11-12 00:09:30,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2955 transitions. [2023-11-12 00:09:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-12 00:09:30,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:30,830 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:09:30,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:30,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 948819131, now seen corresponding path program 1 times [2023-11-12 00:09:30,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:30,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585338558] [2023-11-12 00:09:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-12 00:09:31,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585338558] [2023-11-12 00:09:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585338558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142673627] [2023-11-12 00:09:31,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:31,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:31,492 INFO L87 Difference]: Start difference. First operand 2041 states and 2955 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:34,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:37,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:39,016 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 [] [2023-11-12 00:09:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:40,741 INFO L93 Difference]: Finished difference Result 4960 states and 7158 transitions. [2023-11-12 00:09:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-12 00:09:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:40,774 INFO L225 Difference]: With dead ends: 4960 [2023-11-12 00:09:40,774 INFO L226 Difference]: Without dead ends: 2959 [2023-11-12 00:09:40,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:40,788 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 769 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:40,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2889 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2023-11-12 00:09:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2023-11-12 00:09:40,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2946. [2023-11-12 00:09:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 1837 states have (on average 1.327163854109962) internal successors, (2438), 1858 states have internal predecessors, (2438), 907 states have call successors, (907), 202 states have call predecessors, (907), 201 states have return successors, (900), 897 states have call predecessors, (900), 900 states have call successors, (900) [2023-11-12 00:09:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4245 transitions. [2023-11-12 00:09:41,018 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4245 transitions. Word has length 168 [2023-11-12 00:09:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:41,020 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4245 transitions. [2023-11-12 00:09:41,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4245 transitions. [2023-11-12 00:09:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-12 00:09:41,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:41,026 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:41,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:09:41,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:41,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:41,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2073523189, now seen corresponding path program 1 times [2023-11-12 00:09:41,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:41,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17356611] [2023-11-12 00:09:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-12 00:09:41,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17356611] [2023-11-12 00:09:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17356611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315811534] [2023-11-12 00:09:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:41,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:41,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:41,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:41,932 INFO L87 Difference]: Start difference. First operand 2946 states and 4245 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:43,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:46,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:49,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:09:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:09:51,166 INFO L93 Difference]: Finished difference Result 8693 states and 12529 transitions. [2023-11-12 00:09:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:09:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 166 [2023-11-12 00:09:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:09:51,229 INFO L225 Difference]: With dead ends: 8693 [2023-11-12 00:09:51,229 INFO L226 Difference]: Without dead ends: 5795 [2023-11-12 00:09:51,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:51,252 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1469 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:09:51,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2988 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-12 00:09:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-11-12 00:09:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5787. [2023-11-12 00:09:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5787 states, 3618 states have (on average 1.3266998341625207) internal successors, (4800), 3653 states have internal predecessors, (4800), 1769 states have call successors, (1769), 400 states have call predecessors, (1769), 399 states have return successors, (1762), 1757 states have call predecessors, (1762), 1762 states have call successors, (1762) [2023-11-12 00:09:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8331 transitions. [2023-11-12 00:09:51,824 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8331 transitions. Word has length 166 [2023-11-12 00:09:51,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:09:51,826 INFO L495 AbstractCegarLoop]: Abstraction has 5787 states and 8331 transitions. [2023-11-12 00:09:51,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:51,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8331 transitions. [2023-11-12 00:09:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-12 00:09:51,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:09:51,830 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:09:51,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:09:51,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:09:51,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:09:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1123643671, now seen corresponding path program 1 times [2023-11-12 00:09:51,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:09:51,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006984139] [2023-11-12 00:09:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:09:51,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:09:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:09:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-12 00:09:52,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:09:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006984139] [2023-11-12 00:09:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006984139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:09:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:09:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:09:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748650049] [2023-11-12 00:09:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:09:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:09:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:09:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:09:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:09:52,387 INFO L87 Difference]: Start difference. First operand 5787 states and 8331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-12 00:09:53,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []