./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 a0165632 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_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/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_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje --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 6f86833868c5bd8f52db116e0dc9a6adcf67c5a3282a5f6499cc1c794678520b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:04:26,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:04:26,990 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 01:04:27,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:04:27,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:04:27,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:04:27,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:04:27,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:04:27,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:04:27,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:04:27,063 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:04:27,063 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:04:27,063 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:04:27,064 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:04:27,067 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:04:27,068 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:04:27,068 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:04:27,069 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:04:27,069 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:04:27,069 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:04:27,069 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:04:27,070 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:04:27,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:04:27,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:04:27,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:04:27,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:04:27,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:04:27,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:04:27,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:04:27,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:04:27,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:04:27,072 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:04:27,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:04:27,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:04:27,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:04:27,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:04:27,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:04:27,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:04:27,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:04:27,076 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:04:27,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:04:27,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:04:27,078 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:04:27,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:04:27,079 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_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f86833868c5bd8f52db116e0dc9a6adcf67c5a3282a5f6499cc1c794678520b [2024-11-09 01:04:27,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:04:27,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:04:27,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:04:27,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:04:27,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:04:27,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/../../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 Unable to find full path for "g++" [2024-11-09 01:04:29,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:04:29,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:04:29,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/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 [2024-11-09 01:04:29,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/data/bc887cc1f/e11ebe1a657b4b03909e47faa68e5aa5/FLAG6a9121e5a [2024-11-09 01:04:30,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/data/bc887cc1f/e11ebe1a657b4b03909e47faa68e5aa5 [2024-11-09 01:04:30,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:04:30,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:04:30,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:04:30,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:04:30,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:04:30,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:04:30" (1/1) ... [2024-11-09 01:04:30,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61998948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:30, skipping insertion in model container [2024-11-09 01:04:30,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:04:30" (1/1) ... [2024-11-09 01:04:30,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:04:30,732 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2024-11-09 01:04:30,733 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2024-11-09 01:04:31,025 WARN L250 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_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/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] [2024-11-09 01:04:31,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:04:32,362 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:04:32,482 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2024-11-09 01:04:32,483 WARN L1355 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2024-11-09 01:04:32,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [3705] [2024-11-09 01:04:32,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3708] [2024-11-09 01:04:32,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3711] [2024-11-09 01:04:32,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [3714] [2024-11-09 01:04:32,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [3768] [2024-11-09 01:04:32,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [3776] [2024-11-09 01:04:32,498 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [3783] [2024-11-09 01:04:32,498 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [3790] [2024-11-09 01:04:32,504 WARN L250 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_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/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] [2024-11-09 01:04:32,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:04:33,193 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:04:33,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33 WrapperNode [2024-11-09 01:04:33,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:04:33,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:04:33,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:04:33,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:04:33,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:33,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:34,331 INFO L138 Inliner]: procedures = 199, calls = 11545, calls flagged for inlining = 96, calls inlined = 94, statements flattened = 14562 [2024-11-09 01:04:34,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:04:34,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:04:34,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:04:34,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:04:34,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:34,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:34,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:34,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:04:35,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:04:35,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:04:35,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:04:35,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (1/1) ... [2024-11-09 01:04:35,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:04:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:04:35,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:04:35,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:04:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_start [2024-11-09 01:04:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_start [2024-11-09 01:04:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_set_termios [2024-11-09 01:04:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_set_termios [2024-11-09 01:04:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2024-11-09 01:04:35,290 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2024-11-09 01:04:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 01:04:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 01:04:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 01:04:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 01:04:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2024-11-09 01:04:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2024-11-09 01:04:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-09 01:04:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-09 01:04:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmset [2024-11-09 01:04:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmset [2024-11-09 01:04:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2024-11-09 01:04:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2024-11-09 01:04:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 01:04:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 01:04:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2024-11-09 01:04:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2024-11-09 01:04:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2024-11-09 01:04:35,294 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2024-11-09 01:04:35,294 INFO L130 BoogieDeclarations]: Found specification of procedure raise_dtr [2024-11-09 01:04:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure raise_dtr [2024-11-09 01:04:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2024-11-09 01:04:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2024-11-09 01:04:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_chars_in_buffer [2024-11-09 01:04:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_chars_in_buffer [2024-11-09 01:04:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2024-11-09 01:04:35,295 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2024-11-09 01:04:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2024-11-09 01:04:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2024-11-09 01:04:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_buffer [2024-11-09 01:04:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_buffer [2024-11-09 01:04:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-09 01:04:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-09 01:04:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 01:04:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 01:04:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure outsw [2024-11-09 01:04:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure outsw [2024-11-09 01:04:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 01:04:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 01:04:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2024-11-09 01:04:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_put_char [2024-11-09 01:04:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_put_char [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2024-11-09 01:04:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_write_room [2024-11-09 01:04:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_write_room [2024-11-09 01:04:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_ioctl [2024-11-09 01:04:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_ioctl [2024-11-09 01:04:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-09 01:04:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-09 01:04:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure drop_dtr [2024-11-09 01:04:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_dtr [2024-11-09 01:04:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 01:04:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 01:04:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:04:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 01:04:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-09 01:04:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-09 01:04:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 01:04:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 01:04:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-09 01:04:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-09 01:04:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2024-11-09 01:04:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2024-11-09 01:04:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 01:04:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 01:04:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-09 01:04:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2024-11-09 01:04:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 01:04:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_dtr_rts [2024-11-09 01:04:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_dtr_rts [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-09 01:04:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-09 01:04:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-11-09 01:04:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-11-09 01:04:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_config_port [2024-11-09 01:04:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_config_port [2024-11-09 01:04:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 01:04:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2024-11-09 01:04:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2024-11-09 01:04:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:04:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmget [2024-11-09 01:04:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmget [2024-11-09 01:04:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_unthrottle [2024-11-09 01:04:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_unthrottle [2024-11-09 01:04:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure lock_card [2024-11-09 01:04:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_card [2024-11-09 01:04:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_chars [2024-11-09 01:04:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_chars [2024-11-09 01:04:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 01:04:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2024-11-09 01:04:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-11-09 01:04:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2024-11-09 01:04:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2024-11-09 01:04:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2024-11-09 01:04:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 01:04:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 01:04:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_carrier_raised [2024-11-09 01:04:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_carrier_raised [2024-11-09 01:04:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:04:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_hangup [2024-11-09 01:04:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_hangup [2024-11-09 01:04:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_throttle [2024-11-09 01:04:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_throttle [2024-11-09 01:04:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:04:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2024-11-09 01:04:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2024-11-09 01:04:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-09 01:04:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-09 01:04:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 01:04:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-09 01:04:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-09 01:04:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2024-11-09 01:04:35,312 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2024-11-09 01:04:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2024-11-09 01:04:35,312 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2024-11-09 01:04:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_card [2024-11-09 01:04:35,313 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_card [2024-11-09 01:04:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2024-11-09 01:04:35,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2024-11-09 01:04:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_send_break [2024-11-09 01:04:35,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_send_break [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2024-11-09 01:04:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure WaitTillCardIsFree [2024-11-09 01:04:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure WaitTillCardIsFree [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:04:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2024-11-09 01:04:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2024-11-09 01:04:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 01:04:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 01:04:36,010 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:04:36,014 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:04:36,948 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 01:05:40,448 INFO L? ?]: Removed 1657 outVars from TransFormulas that were not future-live. [2024-11-09 01:05:40,448 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:05:45,409 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:05:45,409 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 01:05:45,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:05:45 BoogieIcfgContainer [2024-11-09 01:05:45,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:05:45,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:05:45,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:05:45,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:05:45,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:04:30" (1/3) ... [2024-11-09 01:05:45,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aef241a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:05:45, skipping insertion in model container [2024-11-09 01:05:45,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:04:33" (2/3) ... [2024-11-09 01:05:45,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aef241a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:05:45, skipping insertion in model container [2024-11-09 01:05:45,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:05:45" (3/3) ... [2024-11-09 01:05:45,419 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 [2024-11-09 01:05:45,438 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:05:45,438 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:05:45,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:05:45,559 INFO L333 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, 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;@6c88bfc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:05:45,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:05:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 1127 states, 702 states have (on average 1.4045584045584045) internal successors, (986), 733 states have internal predecessors, (986), 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) [2024-11-09 01:05:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-09 01:05:45,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:45,630 INFO L215 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] [2024-11-09 01:05:45,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:45,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash -996489668, now seen corresponding path program 1 times [2024-11-09 01:05:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786641032] [2024-11-09 01:05:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:45,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 01:06:19,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:19,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786641032] [2024-11-09 01:06:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786641032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:06:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:06:19,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:06:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922335293] [2024-11-09 01:06:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:06:19,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:06:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:06:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:06:20,016 INFO L87 Difference]: Start difference. First operand has 1127 states, 702 states have (on average 1.4045584045584045) internal successors, (986), 733 states have internal predecessors, (986), 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) [2024-11-09 01:06:22,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:06:25,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:06:29,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:06:31,532 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 [] [2024-11-09 01:06:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:32,578 INFO L93 Difference]: Finished difference Result 3136 states and 4778 transitions. [2024-11-09 01:06:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:06:32,582 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 [2024-11-09 01:06:32,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:32,616 INFO L225 Difference]: With dead ends: 3136 [2024-11-09 01:06:32,616 INFO L226 Difference]: Without dead ends: 1989 [2024-11-09 01:06:32,635 INFO L431 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 [2024-11-09 01:06:32,640 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 1342 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:32,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3002 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 353 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 01:06:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-11-09 01:06:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1989. [2024-11-09 01:06:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1260 states have (on average 1.3968253968253967) internal successors, (1760), 1300 states have internal predecessors, (1760), 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) [2024-11-09 01:06:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2975 transitions. [2024-11-09 01:06:32,929 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2975 transitions. Word has length 151 [2024-11-09 01:06:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:32,930 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2975 transitions. [2024-11-09 01:06:32,930 INFO L472 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) [2024-11-09 01:06:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2975 transitions. [2024-11-09 01:06:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 01:06:32,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:32,949 INFO L215 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] [2024-11-09 01:06:32,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:06:32,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:32,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash 626223497, now seen corresponding path program 1 times [2024-11-09 01:06:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356577150] [2024-11-09 01:06:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 01:07:08,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356577150] [2024-11-09 01:07:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356577150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:08,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:07:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783560674] [2024-11-09 01:07:08,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:08,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:07:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:07:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:07:08,883 INFO L87 Difference]: Start difference. First operand 1989 states and 2975 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) [2024-11-09 01:07:11,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:07:14,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:07:18,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:07:20,109 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 [] [2024-11-09 01:07:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:22,560 INFO L93 Difference]: Finished difference Result 3965 states and 5934 transitions. [2024-11-09 01:07:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:07:22,561 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 [2024-11-09 01:07:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:22,582 INFO L225 Difference]: With dead ends: 3965 [2024-11-09 01:07:22,582 INFO L226 Difference]: Without dead ends: 1993 [2024-11-09 01:07:22,592 INFO L431 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 [2024-11-09 01:07:22,596 INFO L432 NwaCegarLoop]: 1486 mSDtfsCounter, 2 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:22,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2969 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2024-11-09 01:07:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2024-11-09 01:07:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1991. [2024-11-09 01:07:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1262 states have (on average 1.3961965134706815) internal successors, (1762), 1302 states have internal predecessors, (1762), 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) [2024-11-09 01:07:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2977 transitions. [2024-11-09 01:07:22,741 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2977 transitions. Word has length 203 [2024-11-09 01:07:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:22,741 INFO L471 AbstractCegarLoop]: Abstraction has 1991 states and 2977 transitions. [2024-11-09 01:07:22,742 INFO L472 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) [2024-11-09 01:07:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2977 transitions. [2024-11-09 01:07:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-09 01:07:22,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:22,767 INFO L215 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] [2024-11-09 01:07:22,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 01:07:22,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:07:22,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 188926784, now seen corresponding path program 1 times [2024-11-09 01:07:22,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:22,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728221907] [2024-11-09 01:07:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:22,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:07:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:07:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 01:07:54,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:07:54,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728221907] [2024-11-09 01:07:54,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728221907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:07:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:07:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:07:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651204313] [2024-11-09 01:07:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:07:54,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:07:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:07:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:07:54,283 INFO L87 Difference]: Start difference. First operand 1991 states and 2977 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) [2024-11-09 01:07:57,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:07:59,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:08:03,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 01:08:05,429 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 [] [2024-11-09 01:08:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:08:07,573 INFO L93 Difference]: Finished difference Result 3967 states and 5934 transitions. [2024-11-09 01:08:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:08:07,574 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 [2024-11-09 01:08:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:08:07,592 INFO L225 Difference]: With dead ends: 3967 [2024-11-09 01:08:07,592 INFO L226 Difference]: Without dead ends: 1993 [2024-11-09 01:08:07,602 INFO L431 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 [2024-11-09 01:08:07,603 INFO L432 NwaCegarLoop]: 1487 mSDtfsCounter, 0 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:08:07,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2971 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 4 Unknown, 0 Unchecked, 13.1s Time] [2024-11-09 01:08:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2024-11-09 01:08:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2024-11-09 01:08:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1264 states have (on average 1.3955696202531647) internal successors, (1764), 1304 states have internal predecessors, (1764), 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) [2024-11-09 01:08:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2979 transitions. [2024-11-09 01:08:07,701 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2979 transitions. Word has length 205 [2024-11-09 01:08:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:08:07,702 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 2979 transitions. [2024-11-09 01:08:07,702 INFO L472 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) [2024-11-09 01:08:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2979 transitions. [2024-11-09 01:08:07,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 01:08:07,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:08:07,714 INFO L215 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] [2024-11-09 01:08:07,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 01:08:07,715 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:08:07,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:08:07,715 INFO L85 PathProgramCache]: Analyzing trace with hash -590906830, now seen corresponding path program 1 times [2024-11-09 01:08:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:08:07,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702011488] [2024-11-09 01:08:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:08:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:08:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:08:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 01:08:42,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:08:42,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702011488] [2024-11-09 01:08:42,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702011488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:08:42,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847355511] [2024-11-09 01:08:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:08:42,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:08:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:08:42,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:08:42,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee1a5dc3-dd7b-4bb3-94e6-344966b3e34c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:09:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:09:20,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 34719 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:09:20,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:09:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-09 01:09:20,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:09:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-09 01:09:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847355511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:09:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [289439632] [2024-11-09 01:09:21,568 INFO L159 IcfgInterpreter]: Started Sifa with 136 locations of interest [2024-11-09 01:09:21,569 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:09:21,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:09:21,582 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:09:21,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs