./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:55:17,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:17,166 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:55:17,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:17,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:17,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:17,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:17,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:17,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:17,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:17,224 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:17,225 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:17,225 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:17,227 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:55:17,227 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:17,228 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:17,228 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:55:17,229 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:55:17,229 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:17,230 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:55:17,230 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:55:17,231 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:55:17,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:17,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:17,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:55:17,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:17,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:17,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:17,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:17,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:17,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:17,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:17,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:17,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:17,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:17,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:17,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:17,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:17,239 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:55:17,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:55:17,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:17,241 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:17,241 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:17,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:17,242 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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2023-11-24 23:55:17,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:17,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:17,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:17,580 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:17,581 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:17,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-24 23:55:20,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:21,296 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:21,297 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-24 23:55:21,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/data/4cd77fee9/c863fcd4cc024151bb75035e94ebedc9/FLAGc46bd8f9f [2023-11-24 23:55:21,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/data/4cd77fee9/c863fcd4cc024151bb75035e94ebedc9 [2023-11-24 23:55:21,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:21,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:21,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:21,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:21,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:21,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:21" (1/1) ... [2023-11-24 23:55:21,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5868a549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:21, skipping insertion in model container [2023-11-24 23:55:21,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:21" (1/1) ... [2023-11-24 23:55:21,563 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:24,233 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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-11-24 23:55:24,237 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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-11-24 23:55:24,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:24,307 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:24,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3837] [2023-11-24 23:55:24,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3892] [2023-11-24 23:55:24,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3895] [2023-11-24 23:55:24,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3898] [2023-11-24 23:55:24,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3901] [2023-11-24 23:55:24,455 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4621] [2023-11-24 23:55:24,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4627] [2023-11-24 23:55:24,542 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] [2023-11-24 23:55:24,543 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] [2023-11-24 23:55:24,543 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] [2023-11-24 23:55:24,543 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] [2023-11-24 23:55:24,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5499] [2023-11-24 23:55:24,786 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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2023-11-24 23:55:24,787 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_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2023-11-24 23:55:24,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:24,932 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:55:24,932 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:55:24,940 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:24,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24 WrapperNode [2023-11-24 23:55:24,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:24,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:24,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:24,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:24,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,322 INFO L138 Inliner]: procedures = 363, calls = 3045, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 5257 [2023-11-24 23:55:25,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:25,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:25,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:25,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:25,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,380 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:25,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:25,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:25,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:25,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (1/1) ... [2023-11-24 23:55:25,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:25,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:25,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd52e38-5e8d-4dcb-b894-8086b0c3055e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-24 23:55:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-24 23:55:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-24 23:55:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-24 23:55:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-24 23:55:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:55:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:55:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-24 23:55:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-24 23:55:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-24 23:55:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-24 23:55:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-24 23:55:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-24 23:55:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-24 23:55:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-24 23:55:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-24 23:55:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-24 23:55:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:55:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:55:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-24 23:55:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-24 23:55:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-24 23:55:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-24 23:55:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:55:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:55:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-24 23:55:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-24 23:55:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-24 23:55:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-24 23:55:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2023-11-24 23:55:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2023-11-24 23:55:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-24 23:55:25,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-24 23:55:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:55:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-24 23:55:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-24 23:55:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:55:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-24 23:55:25,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-24 23:55:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-24 23:55:25,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-24 23:55:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-24 23:55:25,676 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-24 23:55:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:55:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:55:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-11-24 23:55:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2023-11-24 23:55:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:55:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:55:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:55:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:55:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2023-11-24 23:55:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2023-11-24 23:55:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-24 23:55:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-24 23:55:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-24 23:55:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-24 23:55:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-24 23:55:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-24 23:55:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-24 23:55:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-24 23:55:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-24 23:55:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-24 23:55:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-24 23:55:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-24 23:55:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:55:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 23:55:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 23:55:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-24 23:55:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-24 23:55:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-24 23:55:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-24 23:55:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:55:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-24 23:55:25,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-24 23:55:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-24 23:55:25,682 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-24 23:55:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-24 23:55:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-24 23:55:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-24 23:55:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-24 23:55:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:55:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-24 23:55:25,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-24 23:55:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-24 23:55:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-24 23:55:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:55:25,684 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:55:25,684 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-24 23:55:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-24 23:55:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-24 23:55:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-24 23:55:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-24 23:55:25,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-24 23:55:25,685 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-24 23:55:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-24 23:55:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-24 23:55:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-24 23:55:25,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-24 23:55:25,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-24 23:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:55:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-24 23:55:25,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-24 23:55:25,687 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-24 23:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-24 23:55:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-24 23:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-24 23:55:25,688 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-24 23:55:25,688 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-24 23:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:55:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-24 23:55:25,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-24 23:55:25,689 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-24 23:55:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-24 23:55:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-24 23:55:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-24 23:55:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-24 23:55:25,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-24 23:55:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:55:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-24 23:55:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-24 23:55:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:55:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-24 23:55:25,692 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-24 23:55:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2023-11-24 23:55:25,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2023-11-24 23:55:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:55:25,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-24 23:55:25,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2023-11-24 23:55:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2023-11-24 23:55:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-11-24 23:55:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-11-24 23:55:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-24 23:55:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-24 23:55:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-24 23:55:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-24 23:55:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-24 23:55:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-24 23:55:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-24 23:55:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-24 23:55:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-24 23:55:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-24 23:55:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-24 23:55:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-24 23:55:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-24 23:55:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-24 23:55:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-24 23:55:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-24 23:55:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:25,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:26,428 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:26,431 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:26,633 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-24 23:55:48,166 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-24 23:55:48,265 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:49,261 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:49,261 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 23:55:49,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49 BoogieIcfgContainer [2023-11-24 23:55:49,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:49,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:49,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:49,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:49,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:21" (1/3) ... [2023-11-24 23:55:49,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382b8bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:24" (2/3) ... [2023-11-24 23:55:49,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382b8bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:49, skipping insertion in model container [2023-11-24 23:55:49,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:49" (3/3) ... [2023-11-24 23:55:49,278 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2023-11-24 23:55:49,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:49,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:49,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:49,445 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;@5fb58226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:49,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 1246 states, 755 states have (on average 1.3139072847682118) internal successors, (992), 764 states have internal predecessors, (992), 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) [2023-11-24 23:55:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-24 23:55:49,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:49,501 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] [2023-11-24 23:55:49,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:49,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:49,507 INFO L85 PathProgramCache]: Analyzing trace with hash 102118182, now seen corresponding path program 1 times [2023-11-24 23:55:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731616787] [2023-11-24 23:55:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:49,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-11-24 23:55:50,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731616787] [2023-11-24 23:55:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731616787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:50,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:50,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:50,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529106247] [2023-11-24 23:55:50,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:50,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:50,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:50,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:50,949 INFO L87 Difference]: Start difference. First operand has 1246 states, 755 states have (on average 1.3139072847682118) internal successors, (992), 764 states have internal predecessors, (992), 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) [2023-11-24 23:55:53,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:55:56,238 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 [] [2023-11-24 23:55:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:57,713 INFO L93 Difference]: Finished difference Result 3103 states and 4601 transitions. [2023-11-24 23:55:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:57,717 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 [2023-11-24 23:55:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:57,757 INFO L225 Difference]: With dead ends: 3103 [2023-11-24 23:55:57,757 INFO L226 Difference]: Without dead ends: 1822 [2023-11-24 23:55:57,773 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 [2023-11-24 23:55:57,776 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 946 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:57,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 3203 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2023-11-24 23:55:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-11-24 23:55:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1818. [2023-11-24 23:55:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1127 states have (on average 1.31055900621118) internal successors, (1477), 1139 states have internal predecessors, (1477), 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) [2023-11-24 23:55:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2651 transitions. [2023-11-24 23:55:58,010 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2651 transitions. Word has length 239 [2023-11-24 23:55:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:58,012 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2651 transitions. [2023-11-24 23:55:58,012 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) [2023-11-24 23:55:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2651 transitions. [2023-11-24 23:55:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-24 23:55:58,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:58,025 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] [2023-11-24 23:55:58,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:58,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:58,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:58,026 INFO L85 PathProgramCache]: Analyzing trace with hash 563180087, now seen corresponding path program 1 times [2023-11-24 23:55:58,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:58,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602997828] [2023-11-24 23:55:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2023-11-24 23:55:58,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602997828] [2023-11-24 23:55:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602997828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832503163] [2023-11-24 23:55:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:58,658 INFO L87 Difference]: Start difference. First operand 1818 states and 2651 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) [2023-11-24 23:56:01,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:02,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:03,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:05,964 INFO L93 Difference]: Finished difference Result 5260 states and 7666 transitions. [2023-11-24 23:56:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:05,966 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 [2023-11-24 23:56:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:05,998 INFO L225 Difference]: With dead ends: 5260 [2023-11-24 23:56:05,998 INFO L226 Difference]: Without dead ends: 3481 [2023-11-24 23:56:06,008 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 [2023-11-24 23:56:06,010 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1591 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:06,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 3094 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-24 23:56:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2023-11-24 23:56:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3475. [2023-11-24 23:56:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 2158 states have (on average 1.3123262279888785) internal successors, (2832), 2186 states have internal predecessors, (2832), 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) [2023-11-24 23:56:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5058 transitions. [2023-11-24 23:56:06,277 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5058 transitions. Word has length 252 [2023-11-24 23:56:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:06,285 INFO L495 AbstractCegarLoop]: Abstraction has 3475 states and 5058 transitions. [2023-11-24 23:56:06,285 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) [2023-11-24 23:56:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5058 transitions. [2023-11-24 23:56:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-24 23:56:06,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:06,304 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, 1, 1, 1, 1] [2023-11-24 23:56:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:56:06,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:56:06,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash 882301460, now seen corresponding path program 1 times [2023-11-24 23:56:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697443683] [2023-11-24 23:56:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2023-11-24 23:56:07,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697443683] [2023-11-24 23:56:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697443683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:07,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424675802] [2023-11-24 23:56:07,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:07,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:07,019 INFO L87 Difference]: Start difference. First operand 3475 states and 5058 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-24 23:56:09,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:56:13,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []