./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/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 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:00,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:01,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:00:01,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:01,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:01,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:01,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:01,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:01,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:01,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:01,153 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:01,153 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:01,154 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:01,156 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:01,157 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:01,157 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:01,158 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:01,158 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:01,158 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:01,159 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:01,159 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:01,160 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:01,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:01,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:01,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:01,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:01,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:01,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:01,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:01,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:01,166 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:01,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:01,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:01,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:01,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:01,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:01,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:01,168 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:01,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:01,168 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:01,169 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:01,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:01,169 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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2023-11-19 05:00:01,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:01,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:01,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:01,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:01,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:01,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:00:04,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:05,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:05,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:00:05,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/data/579aa0bbd/a233cb18df1e41efaac4ad6ee11987da/FLAG57749a187 [2023-11-19 05:00:05,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/data/579aa0bbd/a233cb18df1e41efaac4ad6ee11987da [2023-11-19 05:00:05,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:05,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:05,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:05,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:05,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:05,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:05" (1/1) ... [2023-11-19 05:00:05,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de19ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:05, skipping insertion in model container [2023-11-19 05:00:05,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:05" (1/1) ... [2023-11-19 05:00:05,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:07,302 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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2023-11-19 05:00:07,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:07,520 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:07,602 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3258] [2023-11-19 05:00:07,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3265] [2023-11-19 05:00:07,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3272] [2023-11-19 05:00:07,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3305] [2023-11-19 05:00:07,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3308] [2023-11-19 05:00:07,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3311] [2023-11-19 05:00:07,607 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3314] [2023-11-19 05:00:07,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4080] [2023-11-19 05:00:07,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4084] [2023-11-19 05:00:07,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4107] [2023-11-19 05:00:07,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4112] [2023-11-19 05:00:07,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4117] [2023-11-19 05:00:07,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4122] [2023-11-19 05:00:07,681 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4581] [2023-11-19 05:00:07,825 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_716f6c47-4f2e-4850-8ad7-55a1b96103b0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2023-11-19 05:00:07,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:07,953 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:00:07,954 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:00:07,961 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:07,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07 WrapperNode [2023-11-19 05:00:07,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:07,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:07,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:07,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:08,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,320 INFO L138 Inliner]: procedures = 272, calls = 2588, calls flagged for inlining = 117, calls inlined = 96, statements flattened = 4210 [2023-11-19 05:00:08,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:08,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:08,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:08,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:08,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:08,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:08,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:08,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:08,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (1/1) ... [2023-11-19 05:00:08,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:08,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716f6c47-4f2e-4850-8ad7-55a1b96103b0/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:00:08,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:00:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:00:08,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:00:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:00:08,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:00:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 05:00:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:00:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:00:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:00:08,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:00:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:00:08,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:00:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-19 05:00:08,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-19 05:00:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:00:08,726 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:00:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-19 05:00:08,726 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-19 05:00:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:00:08,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:00:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-19 05:00:08,727 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-19 05:00:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 05:00:08,727 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 05:00:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-19 05:00:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-19 05:00:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:00:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:00:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:00:08,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:00:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2023-11-19 05:00:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2023-11-19 05:00:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-19 05:00:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-19 05:00:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:00:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:00:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:00:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:00:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:00:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:00:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:00:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:00:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:00:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:00:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:00:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-19 05:00:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-19 05:00:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:00:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-19 05:00:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-19 05:00:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 05:00:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 05:00:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:00:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:00:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:00:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:00:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:00:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:00:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:00:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:00:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:00:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:00:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:00:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:00:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-19 05:00:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-19 05:00:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-19 05:00:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-19 05:00:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:00:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:00:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:00:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-19 05:00:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-19 05:00:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:00:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:00:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:00:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:00:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:00:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-19 05:00:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-19 05:00:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-19 05:00:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-19 05:00:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:00:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2023-11-19 05:00:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2023-11-19 05:00:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-19 05:00:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-19 05:00:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:00:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:00:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2023-11-19 05:00:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2023-11-19 05:00:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:00:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:00:08,742 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:00:08,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:00:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-19 05:00:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-19 05:00:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:00:08,743 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:00:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:00:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-19 05:00:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-19 05:00:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-19 05:00:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-19 05:00:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-11-19 05:00:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-11-19 05:00:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:00:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:00:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 05:00:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 05:00:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-19 05:00:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-19 05:00:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:00:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2023-11-19 05:00:08,746 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2023-11-19 05:00:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 05:00:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 05:00:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-19 05:00:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-19 05:00:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:00:08,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:00:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:00:08,748 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:00:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:08,748 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2023-11-19 05:00:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2023-11-19 05:00:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:00:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-19 05:00:08,749 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-19 05:00:08,749 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:00:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2023-11-19 05:00:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2023-11-19 05:00:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2023-11-19 05:00:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2023-11-19 05:00:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-19 05:00:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-19 05:00:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:00:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:00:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:00:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:00:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-19 05:00:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-19 05:00:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-19 05:00:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-19 05:00:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2023-11-19 05:00:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2023-11-19 05:00:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 05:00:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 05:00:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 05:00:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 05:00:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:09,437 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:09,441 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:10,033 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:00:16,139 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:16,957 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:16,957 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 05:00:16,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:16 BoogieIcfgContainer [2023-11-19 05:00:16,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:16,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:16,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:16,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:16,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:05" (1/3) ... [2023-11-19 05:00:16,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ace8188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:16, skipping insertion in model container [2023-11-19 05:00:16,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:07" (2/3) ... [2023-11-19 05:00:16,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ace8188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:16, skipping insertion in model container [2023-11-19 05:00:16,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:16" (3/3) ... [2023-11-19 05:00:16,978 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2023-11-19 05:00:16,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:16,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:00:17,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:17,082 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;@2238bffa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:17,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:00:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 668 states have (on average 1.3308383233532934) internal successors, (889), 690 states have internal predecessors, (889), 358 states have call successors, (358), 68 states have call predecessors, (358), 67 states have return successors, (351), 350 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-19 05:00:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-19 05:00:17,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:17,113 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:17,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:17,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 132321754, now seen corresponding path program 1 times [2023-11-19 05:00:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643959086] [2023-11-19 05:00:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-19 05:00:18,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:18,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643959086] [2023-11-19 05:00:18,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643959086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:18,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166411813] [2023-11-19 05:00:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:18,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:18,421 INFO L87 Difference]: Start difference. First operand has 1095 states, 668 states have (on average 1.3308383233532934) internal successors, (889), 690 states have internal predecessors, (889), 358 states have call successors, (358), 68 states have call predecessors, (358), 67 states have return successors, (351), 350 states have call predecessors, (351), 351 states have call successors, (351) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:20,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:23,832 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 [] [2023-11-19 05:00:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:24,524 INFO L93 Difference]: Finished difference Result 3129 states and 4659 transitions. [2023-11-19 05:00:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:24,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2023-11-19 05:00:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:24,564 INFO L225 Difference]: With dead ends: 3129 [2023-11-19 05:00:24,564 INFO L226 Difference]: Without dead ends: 2055 [2023-11-19 05:00:24,579 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 05:00:24,583 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1466 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:24,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 2854 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 05:00:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2023-11-19 05:00:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2041. [2023-11-19 05:00:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1256 states have (on average 1.3168789808917198) internal successors, (1654), 1277 states have internal predecessors, (1654), 654 states have call successors, (654), 131 states have call predecessors, (654), 130 states have return successors, (647), 644 states have call predecessors, (647), 647 states have call successors, (647) [2023-11-19 05:00:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2955 transitions. [2023-11-19 05:00:24,849 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2955 transitions. Word has length 167 [2023-11-19 05:00:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:24,853 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2955 transitions. [2023-11-19 05:00:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:24,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2955 transitions. [2023-11-19 05:00:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-19 05:00:24,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:24,870 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:00:24,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:24,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 948819131, now seen corresponding path program 1 times [2023-11-19 05:00:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048824625] [2023-11-19 05:00:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-19 05:00:25,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048824625] [2023-11-19 05:00:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048824625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:25,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096675529] [2023-11-19 05:00:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:25,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:25,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:25,624 INFO L87 Difference]: Start difference. First operand 2041 states and 2955 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:26,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:29,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:30,776 INFO L93 Difference]: Finished difference Result 4960 states and 7158 transitions. [2023-11-19 05:00:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 168 [2023-11-19 05:00:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:30,804 INFO L225 Difference]: With dead ends: 4960 [2023-11-19 05:00:30,804 INFO L226 Difference]: Without dead ends: 2959 [2023-11-19 05:00:30,814 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 05:00:30,815 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 769 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:30,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2889 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-19 05:00:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2023-11-19 05:00:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2946. [2023-11-19 05:00:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 1837 states have (on average 1.327163854109962) internal successors, (2438), 1858 states have internal predecessors, (2438), 907 states have call successors, (907), 202 states have call predecessors, (907), 201 states have return successors, (900), 897 states have call predecessors, (900), 900 states have call successors, (900) [2023-11-19 05:00:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4245 transitions. [2023-11-19 05:00:31,078 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4245 transitions. Word has length 168 [2023-11-19 05:00:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:31,079 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4245 transitions. [2023-11-19 05:00:31,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4245 transitions. [2023-11-19 05:00:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-19 05:00:31,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:31,083 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:00:31,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:31,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2073523189, now seen corresponding path program 1 times [2023-11-19 05:00:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282912762] [2023-11-19 05:00:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-19 05:00:31,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282912762] [2023-11-19 05:00:31,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282912762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:31,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:31,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:31,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339056485] [2023-11-19 05:00:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:31,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:31,699 INFO L87 Difference]: Start difference. First operand 2946 states and 4245 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:34,254 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 [] [2023-11-19 05:00:38,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:39,185 INFO L93 Difference]: Finished difference Result 8693 states and 12529 transitions. [2023-11-19 05:00:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 166 [2023-11-19 05:00:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:39,239 INFO L225 Difference]: With dead ends: 8693 [2023-11-19 05:00:39,239 INFO L226 Difference]: Without dead ends: 5795 [2023-11-19 05:00:39,254 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 05:00:39,255 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1469 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2988 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2023-11-19 05:00:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-11-19 05:00:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5787. [2023-11-19 05:00:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5787 states, 3618 states have (on average 1.3266998341625207) internal successors, (4800), 3653 states have internal predecessors, (4800), 1769 states have call successors, (1769), 400 states have call predecessors, (1769), 399 states have return successors, (1762), 1757 states have call predecessors, (1762), 1762 states have call successors, (1762) [2023-11-19 05:00:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8331 transitions. [2023-11-19 05:00:39,648 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8331 transitions. Word has length 166 [2023-11-19 05:00:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:39,650 INFO L495 AbstractCegarLoop]: Abstraction has 5787 states and 8331 transitions. [2023-11-19 05:00:39,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8331 transitions. [2023-11-19 05:00:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 05:00:39,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:39,655 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:39,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:00:39,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:39,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1123643671, now seen corresponding path program 1 times [2023-11-19 05:00:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030018714] [2023-11-19 05:00:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:39,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-19 05:00:40,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:40,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030018714] [2023-11-19 05:00:40,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030018714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:40,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:40,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247843218] [2023-11-19 05:00:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:40,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:40,249 INFO L87 Difference]: Start difference. First operand 5787 states and 8331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:42,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:43,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:00:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:46,996 INFO L93 Difference]: Finished difference Result 16409 states and 23584 transitions. [2023-11-19 05:00:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:46,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 173 [2023-11-19 05:00:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:47,095 INFO L225 Difference]: With dead ends: 16409 [2023-11-19 05:00:47,095 INFO L226 Difference]: Without dead ends: 10670 [2023-11-19 05:00:47,128 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 05:00:47,130 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1452 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:47,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 3040 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-19 05:00:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2023-11-19 05:00:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 10657. [2023-11-19 05:00:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10657 states, 6684 states have (on average 1.3264512268102933) internal successors, (8866), 6747 states have internal predecessors, (8866), 3219 states have call successors, (3219), 754 states have call predecessors, (3219), 753 states have return successors, (3212), 3203 states have call predecessors, (3212), 3212 states have call successors, (3212) [2023-11-19 05:00:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 15297 transitions. [2023-11-19 05:00:47,964 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 15297 transitions. Word has length 173 [2023-11-19 05:00:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:47,965 INFO L495 AbstractCegarLoop]: Abstraction has 10657 states and 15297 transitions. [2023-11-19 05:00:47,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-19 05:00:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 15297 transitions. [2023-11-19 05:00:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 05:00:47,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:47,969 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:47,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:00:47,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:00:47,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash -463473294, now seen corresponding path program 1 times [2023-11-19 05:00:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:47,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893651207] [2023-11-19 05:00:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-19 05:00:48,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:48,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893651207] [2023-11-19 05:00:48,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893651207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:48,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842868157] [2023-11-19 05:00:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:48,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:48,437 INFO L87 Difference]: Start difference. First operand 10657 states and 15297 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-19 05:00:51,305 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 []