./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/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_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/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_7c281846-9dbb-43b8-b5dd-582132b26d8a/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 f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:17,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:17,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 04:11:17,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:17,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:17,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:17,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:17,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:17,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:17,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:17,857 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:17,858 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:17,858 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:17,860 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:11:17,861 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:17,861 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:17,862 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:11:17,862 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:11:17,863 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:17,863 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:11:17,864 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:11:17,865 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:11:17,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:17,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:11:17,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:17,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:17,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:11:17,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:17,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:11:17,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:11:17,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:17,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:17,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:17,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:17,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:17,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:17,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:11:17,874 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:11:17,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:11:17,875 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:11:17,875 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:17,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:17,876 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_7c281846-9dbb-43b8-b5dd-582132b26d8a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 [2023-11-19 04:11:18,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:18,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:18,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:18,276 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:18,277 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:18,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2023-11-19 04:11:21,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:21,969 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:21,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2023-11-19 04:11:22,028 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/data/3f2285324/113ad96be3ce4411b9874cf85f73f28e/FLAGb452782c7 [2023-11-19 04:11:22,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/data/3f2285324/113ad96be3ce4411b9874cf85f73f28e [2023-11-19 04:11:22,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:22,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:22,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:22,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:22,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:22,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:22" (1/1) ... [2023-11-19 04:11:22,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5f341a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:22, skipping insertion in model container [2023-11-19 04:11:22,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:22" (1/1) ... [2023-11-19 04:11:22,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:23,277 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2023-11-19 04:11:23,278 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2023-11-19 04:11:23,552 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_7c281846-9dbb-43b8-b5dd-582132b26d8a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2023-11-19 04:11:24,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:24,720 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:24,881 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2023-11-19 04:11:24,882 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2023-11-19 04:11:24,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [3705] [2023-11-19 04:11:24,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3708] [2023-11-19 04:11:24,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3711] [2023-11-19 04:11:24,888 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3714] [2023-11-19 04:11:24,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [3768] [2023-11-19 04:11:24,890 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [3776] [2023-11-19 04:11:24,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [3783] [2023-11-19 04:11:24,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [3790] [2023-11-19 04:11:24,894 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_7c281846-9dbb-43b8-b5dd-582132b26d8a/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2023-11-19 04:11:25,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:25,277 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:11:25,286 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:25,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25 WrapperNode [2023-11-19 04:11:25,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:25,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:25,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:25,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:25,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,555 INFO L138 Inliner]: procedures = 199, calls = 1545, calls flagged for inlining = 95, calls inlined = 93, statements flattened = 4386 [2023-11-19 04:11:25,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:25,556 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:25,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:25,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:25,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:25,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:25,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:25,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:25,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (1/1) ... [2023-11-19 04:11:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:25,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:25,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_start [2023-11-19 04:11:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_start [2023-11-19 04:11:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_set_termios [2023-11-19 04:11:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_set_termios [2023-11-19 04:11:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 04:11:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 04:11:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:11:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:11:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 04:11:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 04:11:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2023-11-19 04:11:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2023-11-19 04:11:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 04:11:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 04:11:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmset [2023-11-19 04:11:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmset [2023-11-19 04:11:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2023-11-19 04:11:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2023-11-19 04:11:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:11:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:11:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2023-11-19 04:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2023-11-19 04:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2023-11-19 04:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2023-11-19 04:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure raise_dtr [2023-11-19 04:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure raise_dtr [2023-11-19 04:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2023-11-19 04:11:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2023-11-19 04:11:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_chars_in_buffer [2023-11-19 04:11:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_chars_in_buffer [2023-11-19 04:11:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2023-11-19 04:11:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2023-11-19 04:11:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 04:11:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 04:11:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_buffer [2023-11-19 04:11:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_buffer [2023-11-19 04:11:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 04:11:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 04:11:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 04:11:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 04:11:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure outsw [2023-11-19 04:11:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure outsw [2023-11-19 04:11:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:11:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:11:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2023-11-19 04:11:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2023-11-19 04:11:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_put_char [2023-11-19 04:11:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_put_char [2023-11-19 04:11:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:11:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:11:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-19 04:11:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-19 04:11:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_write_room [2023-11-19 04:11:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_write_room [2023-11-19 04:11:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_ioctl [2023-11-19 04:11:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_ioctl [2023-11-19 04:11:26,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 04:11:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 04:11:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure drop_dtr [2023-11-19 04:11:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_dtr [2023-11-19 04:11:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 04:11:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 04:11:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:11:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:11:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 04:11:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 04:11:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:11:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:11:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 04:11:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 04:11:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2023-11-19 04:11:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2023-11-19 04:11:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 04:11:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 04:11:26,006 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 04:11:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 04:11:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2023-11-19 04:11:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2023-11-19 04:11:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:11:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:11:26,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:11:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_dtr_rts [2023-11-19 04:11:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_dtr_rts [2023-11-19 04:11:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:11:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:11:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 04:11:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 04:11:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_config_port [2023-11-19 04:11:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_config_port [2023-11-19 04:11:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:11:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 04:11:26,009 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 04:11:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:11:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmget [2023-11-19 04:11:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmget [2023-11-19 04:11:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_unthrottle [2023-11-19 04:11:26,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_unthrottle [2023-11-19 04:11:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure lock_card [2023-11-19 04:11:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_card [2023-11-19 04:11:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_chars [2023-11-19 04:11:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_chars [2023-11-19 04:11:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 04:11:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 04:11:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:11:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-19 04:11:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-19 04:11:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-19 04:11:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-19 04:11:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-19 04:11:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-19 04:11:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 04:11:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 04:11:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 04:11:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 04:11:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_carrier_raised [2023-11-19 04:11:26,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_carrier_raised [2023-11-19 04:11:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:11:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_hangup [2023-11-19 04:11:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_hangup [2023-11-19 04:11:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_throttle [2023-11-19 04:11:26,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_throttle [2023-11-19 04:11:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2023-11-19 04:11:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2023-11-19 04:11:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 04:11:26,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 04:11:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:11:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 04:11:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-19 04:11:26,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-19 04:11:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-19 04:11:26,016 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-19 04:11:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-19 04:11:26,016 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-19 04:11:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_card [2023-11-19 04:11:26,017 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_card [2023-11-19 04:11:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-19 04:11:26,017 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-19 04:11:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_send_break [2023-11-19 04:11:26,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_send_break [2023-11-19 04:11:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:11:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-11-19 04:11:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-11-19 04:11:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure WaitTillCardIsFree [2023-11-19 04:11:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure WaitTillCardIsFree [2023-11-19 04:11:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2023-11-19 04:11:26,019 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2023-11-19 04:11:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 04:11:26,019 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 04:11:26,578 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:26,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:27,471 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 04:11:34,766 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:37,828 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:37,828 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:11:37,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:37 BoogieIcfgContainer [2023-11-19 04:11:37,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:37,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:37,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:37,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:37,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:22" (1/3) ... [2023-11-19 04:11:37,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9a5cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:37, skipping insertion in model container [2023-11-19 04:11:37,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:25" (2/3) ... [2023-11-19 04:11:37,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9a5cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:37, skipping insertion in model container [2023-11-19 04:11:37,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:37" (3/3) ... [2023-11-19 04:11:37,858 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2023-11-19 04:11:37,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:37,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:11:37,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:38,006 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;@27310e50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:38,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:11:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 1126 states, 701 states have (on average 1.405135520684736) internal successors, (985), 732 states have internal predecessors, (985), 358 states have call successors, (358), 67 states have call predecessors, (358), 66 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) [2023-11-19 04:11:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 04:11:38,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:38,072 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:38,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:38,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash 993884257, now seen corresponding path program 1 times [2023-11-19 04:11:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840107744] [2023-11-19 04:11:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-19 04:11:39,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840107744] [2023-11-19 04:11:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840107744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277534318] [2023-11-19 04:11:39,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:39,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:39,359 INFO L87 Difference]: Start difference. First operand has 1126 states, 701 states have (on average 1.405135520684736) internal successors, (985), 732 states have internal predecessors, (985), 358 states have call successors, (358), 67 states have call predecessors, (358), 66 states have return successors, (350), 348 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 04:11:42,027 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 04:11:45,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:11:47,025 WARN L539 Checker$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 04:11:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:47,845 INFO L93 Difference]: Finished difference Result 3134 states and 4776 transitions. [2023-11-19 04:11:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 151 [2023-11-19 04:11:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:47,895 INFO L225 Difference]: With dead ends: 3134 [2023-11-19 04:11:47,896 INFO L226 Difference]: Without dead ends: 1988 [2023-11-19 04:11:47,913 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 04:11:47,917 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 1342 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:47,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3000 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2023-11-19 04:11:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2023-11-19 04:11:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1988. [2023-11-19 04:11:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1259 states have (on average 1.3971405877680698) internal successors, (1759), 1299 states have internal predecessors, (1759), 608 states have call successors, (608), 121 states have call predecessors, (608), 120 states have return successors, (607), 603 states have call predecessors, (607), 607 states have call successors, (607) [2023-11-19 04:11:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2974 transitions. [2023-11-19 04:11:48,212 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2974 transitions. Word has length 151 [2023-11-19 04:11:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:48,213 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 2974 transitions. [2023-11-19 04:11:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-19 04:11:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2974 transitions. [2023-11-19 04:11:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 04:11:48,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:48,248 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:11:48,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:48,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 150722168, now seen corresponding path program 1 times [2023-11-19 04:11:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17621931] [2023-11-19 04:11:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 04:11:48,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17621931] [2023-11-19 04:11:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17621931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:48,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:48,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965871399] [2023-11-19 04:11:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:48,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:48,899 INFO L87 Difference]: Start difference. First operand 1988 states and 2974 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 04:11:51,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:11:53,786 WARN L539 Checker$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 04:11:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:54,851 INFO L93 Difference]: Finished difference Result 3963 states and 5932 transitions. [2023-11-19 04:11:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 203 [2023-11-19 04:11:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:54,881 INFO L225 Difference]: With dead ends: 3963 [2023-11-19 04:11:54,881 INFO L226 Difference]: Without dead ends: 1992 [2023-11-19 04:11:54,896 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 04:11:54,897 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 2 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:54,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2967 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 04:11:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-19 04:11:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1990. [2023-11-19 04:11:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1261 states have (on average 1.3965107057890562) internal successors, (1761), 1301 states have internal predecessors, (1761), 608 states have call successors, (608), 121 states have call predecessors, (608), 120 states have return successors, (607), 603 states have call predecessors, (607), 607 states have call successors, (607) [2023-11-19 04:11:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2976 transitions. [2023-11-19 04:11:55,079 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2976 transitions. Word has length 203 [2023-11-19 04:11:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 1990 states and 2976 transitions. [2023-11-19 04:11:55,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 04:11:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2976 transitions. [2023-11-19 04:11:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-19 04:11:55,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:55,111 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:11:55,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:55,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:55,123 INFO L85 PathProgramCache]: Analyzing trace with hash 499752338, now seen corresponding path program 1 times [2023-11-19 04:11:55,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:55,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042971656] [2023-11-19 04:11:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 04:11:55,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042971656] [2023-11-19 04:11:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042971656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:11:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860490684] [2023-11-19 04:11:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:55,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:55,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:55,837 INFO L87 Difference]: Start difference. First operand 1990 states and 2976 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 04:11:58,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:00,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:01,568 INFO L93 Difference]: Finished difference Result 3965 states and 5932 transitions. [2023-11-19 04:12:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:12:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 205 [2023-11-19 04:12:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:01,589 INFO L225 Difference]: With dead ends: 3965 [2023-11-19 04:12:01,589 INFO L226 Difference]: Without dead ends: 1992 [2023-11-19 04:12:01,600 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 04:12:01,604 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 0 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:01,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2969 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-11-19 04:12:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-19 04:12:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1992. [2023-11-19 04:12:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1263 states have (on average 1.395882818685669) internal successors, (1763), 1303 states have internal predecessors, (1763), 608 states have call successors, (608), 121 states have call predecessors, (608), 120 states have return successors, (607), 603 states have call predecessors, (607), 607 states have call successors, (607) [2023-11-19 04:12:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2978 transitions. [2023-11-19 04:12:01,740 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2978 transitions. Word has length 205 [2023-11-19 04:12:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:01,741 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 2978 transitions. [2023-11-19 04:12:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-19 04:12:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2978 transitions. [2023-11-19 04:12:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-19 04:12:01,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:01,760 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:12:01,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:12:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1638898409, now seen corresponding path program 1 times [2023-11-19 04:12:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005420997] [2023-11-19 04:12:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 04:12:02,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005420997] [2023-11-19 04:12:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005420997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:12:02,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104200612] [2023-11-19 04:12:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:02,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:02,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:02,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c281846-9dbb-43b8-b5dd-582132b26d8a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:12:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:03,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:12:03,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-19 04:12:03,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:12:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-19 04:12:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104200612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:12:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [15352917] [2023-11-19 04:12:04,016 INFO L159 IcfgInterpreter]: Started Sifa with 136 locations of interest [2023-11-19 04:12:04,017 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:12:04,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:12:04,029 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:12:04,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs