./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8 --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:01,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:01,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:01,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:01,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:01,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:01,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:01,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:01,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:01,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:01,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:01,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:01,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:01,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:01,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:01,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:01,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:01,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:01,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:01,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:01,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:01,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:01,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:01,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:01,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:01,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:01,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:01,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:01,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:01,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:01,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:01,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:01,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:01,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:01,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:01,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:01,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:01,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:01,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:01,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:01,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:01,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:36:01,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:01,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:01,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:01,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:01,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:01,648 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:01,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:01,648 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:01,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:01,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:01,650 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:01,650 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:01,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:01,651 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:01,651 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:01,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:01,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:01,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:01,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:01,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:01,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:01,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:01,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:01,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:01,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:01,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:01,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:01,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:01,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:01,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:01,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:01,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:01,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:01,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:01,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:01,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:01,657 INFO L138 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_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-07 01:36:01,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:01,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:01,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:01,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:01,985 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:01,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 01:36:02,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/e20df31a3/4fb7684d860247ec8cbaa47228b30cdd/FLAG072776d9d [2021-11-07 01:36:02,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:02,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 01:36:02,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/e20df31a3/4fb7684d860247ec8cbaa47228b30cdd/FLAG072776d9d [2021-11-07 01:36:03,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/e20df31a3/4fb7684d860247ec8cbaa47228b30cdd [2021-11-07 01:36:03,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:03,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:03,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:03,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:03,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:03,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:03" (1/1) ... [2021-11-07 01:36:03,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be84995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:03, skipping insertion in model container [2021-11-07 01:36:03,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:03" (1/1) ... [2021-11-07 01:36:03,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:03,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:04,861 WARN L228 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_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-07 01:36:04,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:04,936 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:36:04,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f26a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:04, skipping insertion in model container [2021-11-07 01:36:04,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:04,938 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:04,941 INFO L168 Benchmark]: Toolchain (without parser) took 1514.13 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 42.2 MB in the end (delta: 43.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:04,942 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:04,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1509.16 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 42.2 MB in the end (delta: 43.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:04,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1509.16 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 42.2 MB in the end (delta: 43.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3642]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8 --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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:07,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:07,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:07,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:07,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:07,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:07,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:07,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:07,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:07,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:07,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:07,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:07,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:07,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:07,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:07,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:07,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:07,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:07,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:07,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:07,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:07,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:07,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:07,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:07,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:07,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:07,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:07,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:07,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:07,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:07,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:07,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:07,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:07,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:07,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:07,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:07,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:07,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:07,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:07,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:07,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:07,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:36:07,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:07,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:07,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:07,527 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:07,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:07,527 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:07,527 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:07,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:07,528 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:07,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:07,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:07,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:07,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:07,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:07,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:07,532 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:07,532 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:07,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:07,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:07,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:07,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:07,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:07,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:07,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:07,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:07,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:07,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:07,535 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:07,535 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:07,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:07,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:07,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:07,536 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-07 01:36:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:07,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:07,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:08,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:08,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:08,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 01:36:08,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/47dac52cc/048ddd797f704527ae5617960483aa1e/FLAG3de516cf7 [2021-11-07 01:36:09,028 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:09,029 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 01:36:09,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/47dac52cc/048ddd797f704527ae5617960483aa1e/FLAG3de516cf7 [2021-11-07 01:36:09,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/data/47dac52cc/048ddd797f704527ae5617960483aa1e [2021-11-07 01:36:09,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:09,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:09,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:09,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:09,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:09,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:09" (1/1) ... [2021-11-07 01:36:09,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67158d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:09, skipping insertion in model container [2021-11-07 01:36:09,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:09" (1/1) ... [2021-11-07 01:36:09,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:09,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:11,862 WARN L228 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_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-07 01:36:11,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:11,979 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:12,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:12,163 WARN L228 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_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-07 01:36:12,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:12,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:12,394 WARN L228 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_902e757a-3652-4218-a9f8-2f15cc2d2309/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-07 01:36:12,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:12,454 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:12,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12 WrapperNode [2021-11-07 01:36:12,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:12,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:12,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:12,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:12,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:12,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:12,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:12,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:12,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:12,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:12,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:12,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:12,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (1/1) ... [2021-11-07 01:36:12,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:12,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:12,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:36:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:36:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:36:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:36:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:36:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:36:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:36:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:36:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:36:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:36:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:36:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:36:14,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:36:14,602 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-07 01:36:14,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:36:14 BoogieIcfgContainer [2021-11-07 01:36:14,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:36:14,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:36:14,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:36:14,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:36:14,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:09" (1/3) ... [2021-11-07 01:36:14,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a1371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:36:14, skipping insertion in model container [2021-11-07 01:36:14,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:12" (2/3) ... [2021-11-07 01:36:14,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8a1371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:36:14, skipping insertion in model container [2021-11-07 01:36:14,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:36:14" (3/3) ... [2021-11-07 01:36:14,615 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 01:36:14,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:36:14,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:36:14,743 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:36:14,768 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:36:14,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:36:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:36:14,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:14,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:14,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-11-07 01:36:14,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:14,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164232915] [2021-11-07 01:36:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:14,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:14,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:14,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:36:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:15,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:36:15,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:15,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:36:15,896 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:15,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164232915] [2021-11-07 01:36:15,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164232915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:15,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:15,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:36:15,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025314148] [2021-11-07 01:36:15,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:36:15,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:36:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:36:15,967 INFO L87 Difference]: Start difference. First operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:16,112 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-11-07 01:36:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:16,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:36:16,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:16,144 INFO L225 Difference]: With dead ends: 235 [2021-11-07 01:36:16,145 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 01:36:16,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:36:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 01:36:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 01:36:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.273972602739726) internal successors, (186), 147 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-11-07 01:36:16,295 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-11-07 01:36:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:16,295 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-11-07 01:36:16,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-11-07 01:36:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:36:16,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:16,302 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:36:16,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:16,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:16,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-11-07 01:36:16,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:16,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468795066] [2021-11-07 01:36:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:16,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:16,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:16,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:36:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:17,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:17,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:36:17,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:36:17,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:17,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468795066] [2021-11-07 01:36:17,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468795066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:17,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:17,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:36:17,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012512032] [2021-11-07 01:36:17,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:36:17,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:36:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:36:17,368 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:17,408 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-11-07 01:36:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 01:36:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:17,410 INFO L225 Difference]: With dead ends: 290 [2021-11-07 01:36:17,411 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 01:36:17,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:36:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 01:36:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 01:36:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 147 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-11-07 01:36:17,433 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-11-07 01:36:17,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:17,434 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-11-07 01:36:17,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:36:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-11-07 01:36:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:36:17,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:17,436 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:36:17,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:17,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:17,650 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:36:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-11-07 01:36:17,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:17,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549455095] [2021-11-07 01:36:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:17,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:17,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:17,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:17,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:36:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:36:20,447 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:36:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:36:22,779 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:36:22,779 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:36:22,781 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:36:22,782 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:36:22,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:23,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:23,024 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:36:23,027 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:36:23,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:36:23 BoogieIcfgContainer [2021-11-07 01:36:23,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:36:23,342 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:36:23,342 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:36:23,342 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:36:23,343 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:36:14" (3/4) ... [2021-11-07 01:36:23,361 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:36:23,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:36:23,369 INFO L168 Benchmark]: Toolchain (without parser) took 13765.27 ms. Allocated memory was 56.6 MB in the beginning and 163.6 MB in the end (delta: 107.0 MB). Free memory was 28.9 MB in the beginning and 98.0 MB in the end (delta: -69.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,370 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:23,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2856.49 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 28.7 MB in the beginning and 48.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.89 ms. Allocated memory is still 94.4 MB. Free memory was 48.4 MB in the beginning and 43.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,375 INFO L168 Benchmark]: Boogie Preprocessor took 62.74 ms. Allocated memory is still 94.4 MB. Free memory was 43.0 MB in the beginning and 38.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,375 INFO L168 Benchmark]: RCFGBuilder took 1981.88 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 38.4 MB in the beginning and 60.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,378 INFO L168 Benchmark]: TraceAbstraction took 8733.83 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 60.3 MB in the beginning and 99.1 MB in the end (delta: -38.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,379 INFO L168 Benchmark]: Witness Printer took 19.40 ms. Allocated memory is still 163.6 MB. Free memory was 99.1 MB in the beginning and 98.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:23,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2856.49 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 28.7 MB in the beginning and 48.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.89 ms. Allocated memory is still 94.4 MB. Free memory was 48.4 MB in the beginning and 43.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.74 ms. Allocated memory is still 94.4 MB. Free memory was 43.0 MB in the beginning and 38.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1981.88 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 38.4 MB in the beginning and 60.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8733.83 ms. Allocated memory was 117.4 MB in the beginning and 163.6 MB in the end (delta: 46.1 MB). Free memory was 60.3 MB in the beginning and 99.1 MB in the end (delta: -38.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 19.40 ms. Allocated memory is still 163.6 MB. Free memory was 99.1 MB in the beginning and 98.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4535] return __VERIFIER_nondet_int(); [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4351] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L4437] return __VERIFIER_nondet_int(); [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-33554434:0}, id_table={4611686018393833466:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-1:0}, virtio_blk={-4611686018460942340:0}] - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 98 SDslu, 389 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 4 NumberOfNonLiveVariables, 611 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:36:23,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_902e757a-3652-4218-a9f8-2f15cc2d2309/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample