./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --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 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:42:25,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:42:25,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:42:25,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:42:25,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:42:25,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:42:25,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:42:25,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:42:25,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:42:25,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:42:25,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:42:25,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:42:25,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:42:25,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:42:25,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:42:25,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:42:25,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:42:25,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:42:25,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:42:25,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:42:25,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:42:25,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:42:25,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:42:25,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:42:25,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:42:25,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:42:25,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:42:25,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:42:25,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:42:25,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:42:25,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:42:25,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:42:25,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:42:25,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:42:25,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:42:25,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:42:25,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:42:25,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:42:25,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:42:25,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:42:25,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:42:25,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:42:25,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:42:25,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:42:25,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:42:25,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:42:25,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:42:25,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:42:25,494 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:42:25,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:42:25,496 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:42:25,496 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:42:25,497 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:42:25,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:42:25,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:42:25,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:42:25,498 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:42:25,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:42:25,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:42:25,498 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:42:25,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:42:25,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:42:25,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:42:25,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:42:25,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:42:25,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:42:25,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:42:25,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:42:25,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:42:25,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:42:25,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:42:25,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:25,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:42:25,503 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:42:25,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:42:25,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:42:25,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:42:25,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:42:25,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:42:25,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:42:25,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 [2022-10-17 17:42:25,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:42:25,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:42:25,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:42:25,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:42:25,877 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:42:25,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-10-17 17:42:25,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/data/f6e8dd26c/32257b1861124ad0a0be8d12f70ba3c7/FLAG1cfdbf8b6 [2022-10-17 17:42:26,876 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:42:26,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-10-17 17:42:26,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/data/f6e8dd26c/32257b1861124ad0a0be8d12f70ba3c7/FLAG1cfdbf8b6 [2022-10-17 17:42:27,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/data/f6e8dd26c/32257b1861124ad0a0be8d12f70ba3c7 [2022-10-17 17:42:27,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:42:27,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:42:27,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:27,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:42:27,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:42:27,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:27" (1/1) ... [2022-10-17 17:42:27,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8ceee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:27, skipping insertion in model container [2022-10-17 17:42:27,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:27" (1/1) ... [2022-10-17 17:42:27,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:42:27,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:42:29,537 WARN L230 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_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2022-10-17 17:42:29,587 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-10-17 17:42:29,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:29,668 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:42:30,008 WARN L230 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_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2022-10-17 17:42:30,019 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-10-17 17:42:30,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:30,258 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:42:30,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30 WrapperNode [2022-10-17 17:42:30,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:30,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:30,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:42:30,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:42:30,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,530 INFO L138 Inliner]: procedures = 217, calls = 1318, calls flagged for inlining = 114, calls inlined = 113, statements flattened = 3973 [2022-10-17 17:42:30,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:30,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:42:30,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:42:30,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:42:30,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:42:30,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:42:30,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:42:30,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:42:30,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (1/1) ... [2022-10-17 17:42:30,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:30,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:42:30,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:42:30,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c96a082-3915-4e93-b5d0-5e1a50b4ef87/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:42:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_read_event [2022-10-17 17:42:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_read_event [2022-10-17 17:42:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_read_raw [2022-10-17 17:42:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_read_raw [2022-10-17 17:42:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-10-17 17:42:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:42:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:42:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure iio_pollfunc_store_time [2022-10-17 17:42:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_pollfunc_store_time [2022-10-17 17:42:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:42:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:42:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:42:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:42:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_range [2022-10-17 17:42:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_range [2022-10-17 17:42:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:42:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:42:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:42:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:42:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-10-17 17:42:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-10-17 17:42:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:42:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:42:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_unregister [2022-10-17 17:42:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_unregister [2022-10-17 17:42:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:42:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_register [2022-10-17 17:42:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_register [2022-10-17 17:42:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-10-17 17:42:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-10-17 17:42:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:42:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-10-17 17:42:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 17:42:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 17:42:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_get_drvdata [2022-10-17 17:42:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_get_drvdata [2022-10-17 17:42:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure iio_triggered_buffer_cleanup [2022-10-17 17:42:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_triggered_buffer_cleanup [2022-10-17 17:42:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-10-17 17:42:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-10-17 17:42:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:42:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:42:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_write_raw [2022-10-17 17:42:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_write_raw [2022-10-17 17:42:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_poll [2022-10-17 17:42:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_poll [2022-10-17 17:42:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put_noidle [2022-10-17 17:42:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put_noidle [2022-10-17 17:42:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_power_state [2022-10-17 17:42:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_power_state [2022-10-17 17:42:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 17:42:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 17:42:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_set_drvdata [2022-10-17 17:42:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_set_drvdata [2022-10-17 17:42:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 17:42:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 17:42:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:42:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2022-10-17 17:42:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2022-10-17 17:42:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure __pm_runtime_set_status [2022-10-17 17:42:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __pm_runtime_set_status [2022-10-17 17:42:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:42:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-10-17 17:42:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-10-17 17:42:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_trigger_handler [2022-10-17 17:42:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_trigger_handler [2022-10-17 17:42:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-10-17 17:42:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-10-17 17:42:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure iio_priv [2022-10-17 17:42:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_priv [2022-10-17 17:42:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure iio_device_unregister [2022-10-17 17:42:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_device_unregister [2022-10-17 17:42:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_event_handler [2022-10-17 17:42:30,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_event_handler [2022-10-17 17:42:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_setup_any_motion_interrupt [2022-10-17 17:42:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_setup_any_motion_interrupt [2022-10-17 17:42:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:42:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:42:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:42:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:42:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:42:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:42:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-10-17 17:42:30,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-10-17 17:42:30,987 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_mode [2022-10-17 17:42:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_mode [2022-10-17 17:42:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_get_acc_reg [2022-10-17 17:42:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_get_acc_reg [2022-10-17 17:42:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_get_mode [2022-10-17 17:42:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_get_mode [2022-10-17 17:42:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:42:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:42:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_4 [2022-10-17 17:42:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_4 [2022-10-17 17:42:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 17:42:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 17:42:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_3 [2022-10-17 17:42:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_3 [2022-10-17 17:42:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-10-17 17:42:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-10-17 17:42:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure iio_read_const_attr [2022-10-17 17:42:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_read_const_attr [2022-10-17 17:42:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_resume [2022-10-17 17:42:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_resume [2022-10-17 17:42:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_write_event [2022-10-17 17:42:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_write_event [2022-10-17 17:42:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure iio_push_event [2022-10-17 17:42:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_push_event [2022-10-17 17:42:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_suspend [2022-10-17 17:42:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_suspend [2022-10-17 17:42:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:42:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-10-17 17:42:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-10-17 17:42:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:42:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:42:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_data_rdy_trig_poll [2022-10-17 17:42:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_data_rdy_trig_poll [2022-10-17 17:42:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 17:42:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 17:42:31,741 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:42:31,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:42:32,189 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:42:53,996 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:42:55,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:42:55,610 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:42:55,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:55 BoogieIcfgContainer [2022-10-17 17:42:55,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:42:55,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:42:55,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:42:55,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:42:55,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:42:27" (1/3) ... [2022-10-17 17:42:55,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358b0f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:55, skipping insertion in model container [2022-10-17 17:42:55,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:30" (2/3) ... [2022-10-17 17:42:55,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358b0f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:55, skipping insertion in model container [2022-10-17 17:42:55,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:55" (3/3) ... [2022-10-17 17:42:55,630 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-10-17 17:42:55,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:42:55,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:42:55,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:42:55,775 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=LoopsAndPotentialCycles, 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;@5e0f3cf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:42:55,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:42:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 921 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 636 states have internal predecessors, (881), 252 states have call successors, (252), 52 states have call predecessors, (252), 51 states have return successors, (239), 238 states have call predecessors, (239), 239 states have call successors, (239) [2022-10-17 17:42:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-10-17 17:42:55,824 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:55,825 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:42:55,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:55,831 INFO L85 PathProgramCache]: Analyzing trace with hash 741848251, now seen corresponding path program 1 times [2022-10-17 17:42:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:55,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136637340] [2022-10-17 17:42:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:42:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-10-17 17:42:57,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:42:57,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136637340] [2022-10-17 17:42:57,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136637340] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:42:57,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:42:57,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:42:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439043666] [2022-10-17 17:42:57,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:42:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:42:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:42:57,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:42:57,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:42:57,738 INFO L87 Difference]: Start difference. First operand has 921 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 636 states have internal predecessors, (881), 252 states have call successors, (252), 52 states have call predecessors, (252), 51 states have return successors, (239), 238 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-10-17 17:42:59,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []