./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:22,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:22,811 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:32:22,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:22,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:22,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:22,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:22,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:22,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:22,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:22,845 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:22,846 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:22,847 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:22,847 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:22,848 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:22,849 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:22,849 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:22,850 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:22,851 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:22,851 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:22,852 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:22,853 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:22,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:22,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:22,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:22,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:22,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:22,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:22,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:22,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:22,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:22,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:22,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:22,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:22,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:22,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:22,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:22,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:32:22,862 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:22,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:22,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:22,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:32:22,863 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:22,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:22,864 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_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2023-11-23 21:32:23,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:23,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:23,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:23,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:23,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:23,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-23 21:32:26,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:27,063 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:27,063 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-23 21:32:27,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/data/f67e3eccd/21f8b46c938246dfbcc063c75cc05e61/FLAG53b8e8c96 [2023-11-23 21:32:27,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/data/f67e3eccd/21f8b46c938246dfbcc063c75cc05e61 [2023-11-23 21:32:27,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:27,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:27,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:27,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:27,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:27,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:27" (1/1) ... [2023-11-23 21:32:27,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b538745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:27, skipping insertion in model container [2023-11-23 21:32:27,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:27" (1/1) ... [2023-11-23 21:32:27,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:28,955 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_2a0c644f-bf06-4b07-a5c3-6f2183160f06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-11-23 21:32:29,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:29,038 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:29,220 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3951-3952] [2023-11-23 21:32:29,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4068] [2023-11-23 21:32:29,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4071] [2023-11-23 21:32:29,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4074] [2023-11-23 21:32:29,231 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4077] [2023-11-23 21:32:29,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [4102] [2023-11-23 21:32:29,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4105] [2023-11-23 21:32:29,234 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4108] [2023-11-23 21:32:29,234 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [4111] [2023-11-23 21:32:29,486 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_2a0c644f-bf06-4b07-a5c3-6f2183160f06/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2023-11-23 21:32:29,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:29,585 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:29,595 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:29,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29 WrapperNode [2023-11-23 21:32:29,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:29,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:29,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:29,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:29,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:29,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:29,989 INFO L138 Inliner]: procedures = 180, calls = 1525, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 4243 [2023-11-23 21:32:29,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:29,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:29,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:29,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:30,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:30,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:30,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:30,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:30,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (1/1) ... [2023-11-23 21:32:30,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:30,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:30,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:30,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a0c644f-bf06-4b07-a5c3-6f2183160f06/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:32:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:32:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2023-11-23 21:32:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2023-11-23 21:32:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:32:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2023-11-23 21:32:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2023-11-23 21:32:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:32:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:32:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-23 21:32:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2023-11-23 21:32:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:32:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:32:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:32:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:32:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:32:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2023-11-23 21:32:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2023-11-23 21:32:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2023-11-23 21:32:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2023-11-23 21:32:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:32:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:32:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-23 21:32:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-23 21:32:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-23 21:32:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-23 21:32:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2023-11-23 21:32:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2023-11-23 21:32:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:32:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:32:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-11-23 21:32:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-11-23 21:32:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2023-11-23 21:32:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2023-11-23 21:32:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-23 21:32:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-23 21:32:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 21:32:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 21:32:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-23 21:32:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-23 21:32:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:32:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:32:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-23 21:32:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-23 21:32:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2023-11-23 21:32:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2023-11-23 21:32:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:32:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 21:32:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 21:32:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-23 21:32:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-23 21:32:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2023-11-23 21:32:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2023-11-23 21:32:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:32:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:32:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2023-11-23 21:32:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2023-11-23 21:32:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2023-11-23 21:32:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2023-11-23 21:32:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2023-11-23 21:32:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2023-11-23 21:32:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2023-11-23 21:32:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2023-11-23 21:32:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-23 21:32:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-23 21:32:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:32:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:32:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2023-11-23 21:32:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2023-11-23 21:32:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2023-11-23 21:32:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2023-11-23 21:32:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2023-11-23 21:32:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2023-11-23 21:32:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-23 21:32:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-23 21:32:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:32:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:32:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2023-11-23 21:32:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2023-11-23 21:32:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2023-11-23 21:32:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2023-11-23 21:32:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2023-11-23 21:32:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2023-11-23 21:32:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2023-11-23 21:32:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2023-11-23 21:32:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2023-11-23 21:32:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2023-11-23 21:32:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 21:32:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 21:32:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2023-11-23 21:32:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2023-11-23 21:32:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-23 21:32:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-23 21:32:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-23 21:32:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-23 21:32:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:32:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:32:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2023-11-23 21:32:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2023-11-23 21:32:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:32:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2023-11-23 21:32:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2023-11-23 21:32:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2023-11-23 21:32:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2023-11-23 21:32:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:32:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:32:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2023-11-23 21:32:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2023-11-23 21:32:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:32:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:32:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 21:32:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 21:32:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-23 21:32:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:32:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 21:32:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2023-11-23 21:32:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:32:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2023-11-23 21:32:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-23 21:32:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-11-23 21:32:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2023-11-23 21:32:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2023-11-23 21:32:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:31,137 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:31,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:31,513 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:32:40,041 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:42,083 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:42,083 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:32:42,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:42 BoogieIcfgContainer [2023-11-23 21:32:42,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:42,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:42,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:42,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:42,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:27" (1/3) ... [2023-11-23 21:32:42,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ecadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:42, skipping insertion in model container [2023-11-23 21:32:42,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29" (2/3) ... [2023-11-23 21:32:42,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ecadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:42, skipping insertion in model container [2023-11-23 21:32:42,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:42" (3/3) ... [2023-11-23 21:32:42,100 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2023-11-23 21:32:42,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:42,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:32:42,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:42,249 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;@4ed871b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:42,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:32:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 710 states have (on average 1.3901408450704225) internal successors, (987), 742 states have internal predecessors, (987), 363 states have call successors, (363), 63 states have call predecessors, (363), 62 states have return successors, (358), 351 states have call predecessors, (358), 358 states have call successors, (358) [2023-11-23 21:32:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 21:32:42,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:42,286 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:42,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:42,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1161667541, now seen corresponding path program 1 times [2023-11-23 21:32:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15099734] [2023-11-23 21:32:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:42,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-23 21:32:44,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15099734] [2023-11-23 21:32:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15099734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:44,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:44,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:44,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561374449] [2023-11-23 21:32:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:44,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:44,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:44,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:44,413 INFO L87 Difference]: Start difference. First operand has 1137 states, 710 states have (on average 1.3901408450704225) internal successors, (987), 742 states have internal predecessors, (987), 363 states have call successors, (363), 63 states have call predecessors, (363), 62 states have return successors, (358), 351 states have call predecessors, (358), 358 states have call successors, (358) 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:32:46,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:48,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:51,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:53,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:32:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:54,725 INFO L93 Difference]: Finished difference Result 3146 states and 4834 transitions. [2023-11-23 21:32:54,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:54,729 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-11-23 21:32:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:54,769 INFO L225 Difference]: With dead ends: 3146 [2023-11-23 21:32:54,769 INFO L226 Difference]: Without dead ends: 2024 [2023-11-23 21:32:54,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:54,790 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 1358 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:54,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2982 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 383 Invalid, 4 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 21:32:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2023-11-23 21:32:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2023-11-23 21:32:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1258 states have (on average 1.3656597774244834) internal successors, (1718), 1309 states have internal predecessors, (1718), 641 states have call successors, (641), 121 states have call predecessors, (641), 120 states have return successors, (640), 625 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-23 21:32:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2999 transitions. [2023-11-23 21:32:55,031 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2999 transitions. Word has length 114 [2023-11-23 21:32:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:55,033 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2999 transitions. [2023-11-23 21:32:55,033 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:32:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2999 transitions. [2023-11-23 21:32:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 21:32:55,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:55,040 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:55,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:32:55,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:32:55,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 762089695, now seen corresponding path program 1 times [2023-11-23 21:32:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:32:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39651833] [2023-11-23 21:32:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:32:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-23 21:32:56,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:32:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39651833] [2023-11-23 21:32:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39651833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:56,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:56,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:56,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276910618] [2023-11-23 21:32:56,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:56,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:32:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:56,146 INFO L87 Difference]: Start difference. First operand 2020 states and 2999 transitions. 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:32:58,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:00,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:02,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:05,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:08,210 INFO L93 Difference]: Finished difference Result 4973 states and 7358 transitions. [2023-11-23 21:33:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:08,211 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-11-23 21:33:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:08,249 INFO L225 Difference]: With dead ends: 4973 [2023-11-23 21:33:08,250 INFO L226 Difference]: Without dead ends: 2983 [2023-11-23 21:33:08,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:08,267 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 1359 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:08,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 4112 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 459 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2023-11-23 21:33:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2023-11-23 21:33:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2980. [2023-11-23 21:33:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 1859 states have (on average 1.3625605164066703) internal successors, (2533), 1935 states have internal predecessors, (2533), 933 states have call successors, (933), 188 states have call predecessors, (933), 187 states have return successors, (932), 910 states have call predecessors, (932), 932 states have call successors, (932) [2023-11-23 21:33:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4398 transitions. [2023-11-23 21:33:08,560 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4398 transitions. Word has length 114 [2023-11-23 21:33:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:08,561 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4398 transitions. [2023-11-23 21:33:08,561 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 21:33:08,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4398 transitions. [2023-11-23 21:33:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-23 21:33:08,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:08,568 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 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] [2023-11-23 21:33:08,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:08,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:33:08,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1464640011, now seen corresponding path program 1 times [2023-11-23 21:33:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:33:08,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136315499] [2023-11-23 21:33:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2023-11-23 21:33:10,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:33:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136315499] [2023-11-23 21:33:10,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136315499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:10,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:33:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401701605] [2023-11-23 21:33:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:10,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:33:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:10,181 INFO L87 Difference]: Start difference. First operand 2980 states and 4398 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:33:12,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:14,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:17,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []