./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 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_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/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_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/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_77531011-2677-4f1f-9eae-454660e09416/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_77531011-2677-4f1f-9eae-454660e09416/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 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:58,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:58,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:34:58,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:58,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:59,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:59,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:59,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:59,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:59,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:59,025 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:59,026 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:59,027 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:59,028 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:59,029 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:59,029 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:59,030 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:59,030 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:59,031 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:59,031 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:59,032 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:59,032 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:59,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:59,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:59,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:59,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:59,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:59,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:59,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:59,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:59,038 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:59,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:59,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:59,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:59,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:59,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:59,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:59,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:59,040 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:59,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:59,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:59,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:59,042 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:59,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:59,042 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_77531011-2677-4f1f-9eae-454660e09416/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2023-11-23 20:34:59,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:59,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:59,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:59,414 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:59,414 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:59,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/../../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 [2023-11-23 20:35:02,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:03,190 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:03,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/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 [2023-11-23 20:35:03,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/data/ba3b8ad20/43f0b01493dd4c99bd2cf100f98aaadb/FLAG40f2e6f17 [2023-11-23 20:35:03,243 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/data/ba3b8ad20/43f0b01493dd4c99bd2cf100f98aaadb [2023-11-23 20:35:03,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:03,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:03,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:03,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:03,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:03,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3111a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03, skipping insertion in model container [2023-11-23 20:35:03,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,396 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:05,327 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_77531011-2677-4f1f-9eae-454660e09416/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] [2023-11-23 20:35:05,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:05,519 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:05,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3258] [2023-11-23 20:35:05,611 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3265] [2023-11-23 20:35:05,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3272] [2023-11-23 20:35:05,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3305] [2023-11-23 20:35:05,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3308] [2023-11-23 20:35:05,617 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3311] [2023-11-23 20:35:05,618 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3314] [2023-11-23 20:35:05,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4080] [2023-11-23 20:35:05,730 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4084] [2023-11-23 20:35:05,731 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4107] [2023-11-23 20:35:05,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4112] [2023-11-23 20:35:05,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4117] [2023-11-23 20:35:05,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4122] [2023-11-23 20:35:05,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4581] [2023-11-23 20:35:05,895 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_77531011-2677-4f1f-9eae-454660e09416/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] [2023-11-23 20:35:05,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:06,017 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:06,018 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:35:06,025 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:06,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06 WrapperNode [2023-11-23 20:35:06,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:06,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:06,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:06,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:06,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,396 INFO L138 Inliner]: procedures = 272, calls = 2588, calls flagged for inlining = 117, calls inlined = 96, statements flattened = 4210 [2023-11-23 20:35:06,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:06,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:06,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:06,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:06,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:06,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:06,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:06,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:06,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (1/1) ... [2023-11-23 20:35:06,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:06,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:06,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:06,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77531011-2677-4f1f-9eae-454660e09416/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:06,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:35:06,765 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:35:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-23 20:35:06,766 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-23 20:35:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-23 20:35:06,766 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-23 20:35:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-23 20:35:06,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:35:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:35:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:35:06,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:35:06,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:35:06,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:35:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-23 20:35:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-23 20:35:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 20:35:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 20:35:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-23 20:35:06,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-23 20:35:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:35:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:35:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-23 20:35:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-23 20:35:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-23 20:35:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-23 20:35:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-23 20:35:06,770 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-23 20:35:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:35:06,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:35:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 20:35:06,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 20:35:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-23 20:35:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-23 20:35:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-23 20:35:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-23 20:35:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-23 20:35:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-23 20:35:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:35:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:35:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 20:35:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 20:35:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:35:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:35:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-23 20:35:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-23 20:35:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:35:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-23 20:35:06,777 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-23 20:35:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:35:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-23 20:35:06,777 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-23 20:35:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-23 20:35:06,777 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-23 20:35:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:35:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:35:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:35:06,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:35:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:35:06,778 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:35:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:35:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:35:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 20:35:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 20:35:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-23 20:35:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-23 20:35:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-23 20:35:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-23 20:35:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-23 20:35:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-23 20:35:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-23 20:35:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-23 20:35:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:35:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-23 20:35:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-23 20:35:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-23 20:35:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-23 20:35:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:35:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 20:35:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 20:35:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-23 20:35:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-23 20:35:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-23 20:35:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-23 20:35:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:35:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-23 20:35:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-23 20:35:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-23 20:35:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-23 20:35:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:35:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:35:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2023-11-23 20:35:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2023-11-23 20:35:06,785 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-23 20:35:06,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-23 20:35:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 20:35:06,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 20:35:06,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-23 20:35:06,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-23 20:35:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:35:06,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:35:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:35:06,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-23 20:35:06,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-23 20:35:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-23 20:35:06,788 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-23 20:35:06,788 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-23 20:35:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-23 20:35:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:35:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:35:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 20:35:06,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 20:35:06,789 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-23 20:35:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-23 20:35:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:35:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-23 20:35:06,790 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-23 20:35:06,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 20:35:06,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 20:35:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-23 20:35:06,791 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-23 20:35:06,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-23 20:35:06,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-23 20:35:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 20:35:06,792 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 20:35:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2023-11-23 20:35:06,792 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2023-11-23 20:35:06,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:35:06,793 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-23 20:35:06,793 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-23 20:35:06,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 20:35:06,795 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-23 20:35:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-23 20:35:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-23 20:35:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-23 20:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-23 20:35:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-23 20:35:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-23 20:35:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-23 20:35:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-23 20:35:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-23 20:35:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-23 20:35:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-23 20:35:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-23 20:35:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-23 20:35:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-23 20:35:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-23 20:35:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-23 20:35:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-23 20:35:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-23 20:35:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-23 20:35:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:07,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:07,461 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:07,997 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:35:14,152 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:15,064 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:15,065 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 20:35:15,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:15 BoogieIcfgContainer [2023-11-23 20:35:15,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:15,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:15,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:15,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:15,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:03" (1/3) ... [2023-11-23 20:35:15,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73544b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:15, skipping insertion in model container [2023-11-23 20:35:15,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:06" (2/3) ... [2023-11-23 20:35:15,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73544b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:15, skipping insertion in model container [2023-11-23 20:35:15,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:15" (3/3) ... [2023-11-23 20:35:15,080 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 [2023-11-23 20:35:15,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:15,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:35:15,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:15,223 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;@72268fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:15,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:35:15,237 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) [2023-11-23 20:35:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-23 20:35:15,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:15,266 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] [2023-11-23 20:35:15,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:15,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1939135462, now seen corresponding path program 1 times [2023-11-23 20:35:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:15,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536565151] [2023-11-23 20:35:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 20:35:16,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536565151] [2023-11-23 20:35:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536565151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:16,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:16,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146288595] [2023-11-23 20:35:16,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:16,613 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) [2023-11-23 20:35:18,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:21,861 INFO L93 Difference]: Finished difference Result 3129 states and 4659 transitions. [2023-11-23 20:35:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:21,864 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 [2023-11-23 20:35:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:21,897 INFO L225 Difference]: With dead ends: 3129 [2023-11-23 20:35:21,897 INFO L226 Difference]: Without dead ends: 2055 [2023-11-23 20:35:21,910 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 [2023-11-23 20:35:21,914 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1466 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:21,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 2854 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 20:35:21,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2023-11-23 20:35:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2041. [2023-11-23 20:35:22,104 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) [2023-11-23 20:35:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2955 transitions. [2023-11-23 20:35:22,127 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2955 transitions. Word has length 167 [2023-11-23 20:35:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:22,129 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2955 transitions. [2023-11-23 20:35:22,129 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) [2023-11-23 20:35:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2955 transitions. [2023-11-23 20:35:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 20:35:22,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:22,134 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] [2023-11-23 20:35:22,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:22,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:22,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1158154875, now seen corresponding path program 1 times [2023-11-23 20:35:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35141975] [2023-11-23 20:35:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 20:35:22,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35141975] [2023-11-23 20:35:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35141975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:22,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:22,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494806046] [2023-11-23 20:35:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:22,836 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) [2023-11-23 20:35:24,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:28,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:29,058 INFO L93 Difference]: Finished difference Result 4960 states and 7158 transitions. [2023-11-23 20:35:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:29,060 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 [2023-11-23 20:35:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:29,085 INFO L225 Difference]: With dead ends: 4960 [2023-11-23 20:35:29,085 INFO L226 Difference]: Without dead ends: 2959 [2023-11-23 20:35:29,094 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 [2023-11-23 20:35:29,095 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 769 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:29,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2889 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-11-23 20:35:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2023-11-23 20:35:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2946. [2023-11-23 20:35:29,347 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) [2023-11-23 20:35:29,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4245 transitions. [2023-11-23 20:35:29,378 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4245 transitions. Word has length 168 [2023-11-23 20:35:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:29,379 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4245 transitions. [2023-11-23 20:35:29,379 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) [2023-11-23 20:35:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4245 transitions. [2023-11-23 20:35:29,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 20:35:29,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:29,383 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] [2023-11-23 20:35:29,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:35:29,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:29,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1734075979, now seen corresponding path program 1 times [2023-11-23 20:35:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795864725] [2023-11-23 20:35:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:29,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 20:35:30,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:30,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795864725] [2023-11-23 20:35:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795864725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:30,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:30,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35291559] [2023-11-23 20:35:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:30,165 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) [2023-11-23 20:35:32,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:35,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:38,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:40,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:41,394 INFO L93 Difference]: Finished difference Result 8693 states and 12529 transitions. [2023-11-23 20:35:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:41,395 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 [2023-11-23 20:35:41,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:41,442 INFO L225 Difference]: With dead ends: 8693 [2023-11-23 20:35:41,442 INFO L226 Difference]: Without dead ends: 5795 [2023-11-23 20:35:41,456 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 [2023-11-23 20:35:41,457 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1469 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:41,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2988 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2023-11-23 20:35:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-11-23 20:35:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5787. [2023-11-23 20:35:41,848 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) [2023-11-23 20:35:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8331 transitions. [2023-11-23 20:35:41,879 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8331 transitions. Word has length 166 [2023-11-23 20:35:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:41,881 INFO L495 AbstractCegarLoop]: Abstraction has 5787 states and 8331 transitions. [2023-11-23 20:35:41,881 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) [2023-11-23 20:35:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8331 transitions. [2023-11-23 20:35:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 20:35:41,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:41,888 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] [2023-11-23 20:35:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:35:41,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:41,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 625471785, now seen corresponding path program 1 times [2023-11-23 20:35:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758386898] [2023-11-23 20:35:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 20:35:42,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758386898] [2023-11-23 20:35:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758386898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207026099] [2023-11-23 20:35:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:42,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:42,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:42,371 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) [2023-11-23 20:35:45,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:48,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:35:50,450 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 [] [2023-11-23 20:35:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:51,304 INFO L93 Difference]: Finished difference Result 16409 states and 23584 transitions. [2023-11-23 20:35:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:51,305 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 173 [2023-11-23 20:35:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:51,401 INFO L225 Difference]: With dead ends: 16409 [2023-11-23 20:35:51,401 INFO L226 Difference]: Without dead ends: 10670 [2023-11-23 20:35:51,431 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 [2023-11-23 20:35:51,432 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1452 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:51,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 3040 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 20:35:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2023-11-23 20:35:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 10657. [2023-11-23 20:35:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10657 states, 6684 states have (on average 1.3264512268102933) internal successors, (8866), 6747 states have internal predecessors, (8866), 3219 states have call successors, (3219), 754 states have call predecessors, (3219), 753 states have return successors, (3212), 3203 states have call predecessors, (3212), 3212 states have call successors, (3212) [2023-11-23 20:35:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 15297 transitions. [2023-11-23 20:35:52,281 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 15297 transitions. Word has length 173 [2023-11-23 20:35:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:52,282 INFO L495 AbstractCegarLoop]: Abstraction has 10657 states and 15297 transitions. [2023-11-23 20:35:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-23 20:35:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 15297 transitions. [2023-11-23 20:35:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-23 20:35:52,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:52,287 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:52,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:35:52,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:52,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 423778086, now seen corresponding path program 1 times [2023-11-23 20:35:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:52,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761199726] [2023-11-23 20:35:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:52,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 20:35:52,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761199726] [2023-11-23 20:35:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761199726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:52,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190892360] [2023-11-23 20:35:52,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:52,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:52,721 INFO L87 Difference]: Start difference. First operand 10657 states and 15297 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)