./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ --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 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:25,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:25,765 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:02:25,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:25,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:25,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:25,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:25,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:25,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:25,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:25,818 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:25,818 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:25,822 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:25,827 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:25,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:25,827 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:25,829 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:25,830 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:25,830 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:25,830 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:25,831 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:25,831 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:25,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:25,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:25,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:25,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:25,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:25,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:25,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:25,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:25,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:25,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:25,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:25,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:25,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:25,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:25,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:25,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:25,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:25,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:25,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:25,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:25,840 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2023-11-19 05:02:26,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:26,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:26,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:26,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:26,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:26,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-19 05:02:29,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:29,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:29,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-19 05:02:29,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/data/8e33d8f4c/e896fad76a3240b7a0f15d5f89ae0a97/FLAGf7289122d [2023-11-19 05:02:30,015 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/data/8e33d8f4c/e896fad76a3240b7a0f15d5f89ae0a97 [2023-11-19 05:02:30,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:30,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:30,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:30,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:30,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:30,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:30" (1/1) ... [2023-11-19 05:02:30,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39683ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:30, skipping insertion in model container [2023-11-19 05:02:30,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:30" (1/1) ... [2023-11-19 05:02:30,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:32,886 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-11-19 05:02:32,891 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-11-19 05:02:32,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:32,984 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:33,131 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3837] [2023-11-19 05:02:33,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3892] [2023-11-19 05:02:33,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3895] [2023-11-19 05:02:33,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3898] [2023-11-19 05:02:33,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3901] [2023-11-19 05:02:33,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4621] [2023-11-19 05:02:33,188 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4627] [2023-11-19 05:02:33,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %b0, %1\n": "+q" (__ret), "+m" (tmp___5->state): : "memory", "cc"); [4742-4743] [2023-11-19 05:02:33,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %w0, %1\n": "+r" (__ret), "+m" (tmp___6->state): : "memory", "cc"); [4749-4750] [2023-11-19 05:02:33,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0, %1\n": "+r" (__ret), "+m" (tmp___7->state): : "memory", "cc"); [4756-4757] [2023-11-19 05:02:33,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %q0, %1\n": "+r" (__ret), "+m" (tmp___8->state): : "memory", "cc"); [4763-4764] [2023-11-19 05:02:33,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5499] [2023-11-19 05:02:33,515 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-11-19 05:02:33,515 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_931ba318-4984-4ebc-87fc-8b561f3ea8e6/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-11-19 05:02:33,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:33,661 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:33,661 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:33,670 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:33,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33 WrapperNode [2023-11-19 05:02:33,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:33,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:33,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:33,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:33,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:33,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,019 INFO L138 Inliner]: procedures = 363, calls = 3045, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 5109 [2023-11-19 05:02:34,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:34,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:34,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:34,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:34,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:34,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:34,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:34,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:34,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (1/1) ... [2023-11-19 05:02:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:34,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:34,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_931ba318-4984-4ebc-87fc-8b561f3ea8e6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:02:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:02:34,465 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:02:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:02:34,465 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 05:02:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:02:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:02:34,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:02:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:02:34,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:02:34,467 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:02:34,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-19 05:02:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-19 05:02:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:02:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:02:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-19 05:02:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-19 05:02:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:02:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:02:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-19 05:02:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-19 05:02:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-19 05:02:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-19 05:02:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:02:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:02:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-19 05:02:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-19 05:02:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-19 05:02:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-19 05:02:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2023-11-19 05:02:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2023-11-19 05:02:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-19 05:02:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-19 05:02:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-19 05:02:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-19 05:02:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:02:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:02:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:02:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:02:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:02:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-19 05:02:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-19 05:02:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:02:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-11-19 05:02:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-11-19 05:02:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:02:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:02:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:02:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:02:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2023-11-19 05:02:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2023-11-19 05:02:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:02:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:02:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 05:02:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 05:02:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:02:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:02:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:02:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:02:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-19 05:02:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-19 05:02:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-19 05:02:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-19 05:02:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:02:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:02:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:02:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:02:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:02:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-19 05:02:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-19 05:02:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:02:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:02:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:02:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:02:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:02:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-19 05:02:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-19 05:02:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-19 05:02:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-19 05:02:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:02:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-19 05:02:34,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-19 05:02:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-19 05:02:34,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-19 05:02:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:02:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:02:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:02:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:02:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:02:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:02:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-19 05:02:34,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-19 05:02:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:02:34,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:02:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 05:02:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 05:02:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-19 05:02:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-19 05:02:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:02:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:02:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:02:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-19 05:02:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-19 05:02:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 05:02:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 05:02:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-19 05:02:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-19 05:02:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-19 05:02:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-19 05:02:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:02:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:02:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:02:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:02:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:02:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-19 05:02:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-19 05:02:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:02:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:02:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:02:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:02:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:02:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-19 05:02:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-19 05:02:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:02:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-19 05:02:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-19 05:02:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2023-11-19 05:02:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2023-11-19 05:02:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:02:34,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:02:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:02:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-19 05:02:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-19 05:02:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-19 05:02:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-19 05:02:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-19 05:02:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:02:34,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:02:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:02:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:02:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-19 05:02:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-19 05:02:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-19 05:02:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-19 05:02:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-19 05:02:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-19 05:02:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 05:02:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 05:02:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:02:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:02:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:35,157 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:35,162 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:35,383 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:03:01,494 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:03:01,607 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:03:02,774 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:03:02,774 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 05:03:02,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:02 BoogieIcfgContainer [2023-11-19 05:03:02,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:03:02,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:03:02,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:03:02,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:03:02,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:30" (1/3) ... [2023-11-19 05:03:02,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5117a13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:02, skipping insertion in model container [2023-11-19 05:03:02,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:33" (2/3) ... [2023-11-19 05:03:02,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5117a13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:02, skipping insertion in model container [2023-11-19 05:03:02,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:02" (3/3) ... [2023-11-19 05:03:02,808 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-19 05:03:02,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:03:02,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:03:02,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:03:02,950 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;@780a46c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:03:02,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:03:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 1234 states, 743 states have (on average 1.3189771197846567) internal successors, (980), 752 states have internal predecessors, (980), 423 states have call successors, (423), 69 states have call predecessors, (423), 68 states have return successors, (417), 416 states have call predecessors, (417), 417 states have call successors, (417) [2023-11-19 05:03:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-19 05:03:03,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:03,015 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:03,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:03:03,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1937986350, now seen corresponding path program 1 times [2023-11-19 05:03:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126814977] [2023-11-19 05:03:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-11-19 05:03:04,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:04,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126814977] [2023-11-19 05:03:04,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126814977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:04,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:04,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:04,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138167264] [2023-11-19 05:03:04,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:04,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:04,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:04,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:04,651 INFO L87 Difference]: Start difference. First operand has 1234 states, 743 states have (on average 1.3189771197846567) internal successors, (980), 752 states have internal predecessors, (980), 423 states have call successors, (423), 69 states have call predecessors, (423), 68 states have return successors, (417), 416 states have call predecessors, (417), 417 states have call successors, (417) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-19 05:03:08,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:09,765 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 [] [2023-11-19 05:03:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:11,620 INFO L93 Difference]: Finished difference Result 3070 states and 4568 transitions. [2023-11-19 05:03:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:11,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 239 [2023-11-19 05:03:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:11,659 INFO L225 Difference]: With dead ends: 3070 [2023-11-19 05:03:11,659 INFO L226 Difference]: Without dead ends: 1817 [2023-11-19 05:03:11,672 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 [2023-11-19 05:03:11,676 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 937 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:11,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 3181 Invalid, 464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-19 05:03:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-11-19 05:03:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1813. [2023-11-19 05:03:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1122 states have (on average 1.3119429590017826) internal successors, (1472), 1134 states have internal predecessors, (1472), 587 states have call successors, (587), 103 states have call predecessors, (587), 103 states have return successors, (587), 584 states have call predecessors, (587), 587 states have call successors, (587) [2023-11-19 05:03:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2646 transitions. [2023-11-19 05:03:11,962 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2646 transitions. Word has length 239 [2023-11-19 05:03:11,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:11,967 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 2646 transitions. [2023-11-19 05:03:11,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-19 05:03:11,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2646 transitions. [2023-11-19 05:03:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-19 05:03:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:11,984 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:03:11,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:03:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1947062521, now seen corresponding path program 1 times [2023-11-19 05:03:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074068810] [2023-11-19 05:03:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:11,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2023-11-19 05:03:12,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074068810] [2023-11-19 05:03:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074068810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:12,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433802988] [2023-11-19 05:03:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:12,701 INFO L87 Difference]: Start difference. First operand 1813 states and 2646 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-19 05:03:14,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:15,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:17,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:19,162 INFO L93 Difference]: Finished difference Result 5247 states and 7653 transitions. [2023-11-19 05:03:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2023-11-19 05:03:19,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:19,196 INFO L225 Difference]: With dead ends: 5247 [2023-11-19 05:03:19,197 INFO L226 Difference]: Without dead ends: 3473 [2023-11-19 05:03:19,207 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 [2023-11-19 05:03:19,208 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1588 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:19,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 3086 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-19 05:03:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2023-11-19 05:03:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3467. [2023-11-19 05:03:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3467 states, 2150 states have (on average 1.3134883720930233) internal successors, (2824), 2178 states have internal predecessors, (2824), 1113 states have call successors, (1113), 203 states have call predecessors, (1113), 203 states have return successors, (1113), 1103 states have call predecessors, (1113), 1113 states have call successors, (1113) [2023-11-19 05:03:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 5050 transitions. [2023-11-19 05:03:19,493 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 5050 transitions. Word has length 252 [2023-11-19 05:03:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:19,495 INFO L495 AbstractCegarLoop]: Abstraction has 3467 states and 5050 transitions. [2023-11-19 05:03:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-19 05:03:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 5050 transitions. [2023-11-19 05:03:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-19 05:03:19,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:19,512 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:03:19,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:03:19,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash -193426473, now seen corresponding path program 1 times [2023-11-19 05:03:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260517010] [2023-11-19 05:03:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2023-11-19 05:03:20,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260517010] [2023-11-19 05:03:20,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260517010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:20,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595879810] [2023-11-19 05:03:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:20,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:20,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:20,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:20,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:20,217 INFO L87 Difference]: Start difference. First operand 3467 states and 5050 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-19 05:03:21,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []