./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.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_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/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_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/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_9fdc8f66-41c9-4686-afae-38849f19d7ec/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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:24,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:24,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:24,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:24,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:24,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:24,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:24,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:24,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:24,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:24,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:24,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:24,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:24,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:24,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:24,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:24,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:24,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:24,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:24,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:24,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:24,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:24,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:24,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:24,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:24,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:24,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:24,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:24,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:24,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:24,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:24,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:24,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:24,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:24,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:24,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:24,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:24,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:24,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:24,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:24,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:24,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:05:24,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:24,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:24,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:24,963 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:24,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:24,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:24,964 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:05:24,964 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:24,973 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:24,973 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:05:24,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:05:24,975 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:24,976 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:05:24,976 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:05:24,976 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:05:24,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:24,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:05:24,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:24,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:24,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:24,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:24,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:24,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:24,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:24,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:24,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:24,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:24,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:24,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:24,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:24,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:24,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:05:24,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:05:24,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:24,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:24,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:24,986 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-07 01:05:25,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:25,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:25,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:25,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:25,376 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:25,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-07 01:05:25,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/0e8b50768/3fabcef54169405cac7c0b611ccf0526/FLAGf4712da83 [2021-11-07 01:05:26,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:26,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-07 01:05:26,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/0e8b50768/3fabcef54169405cac7c0b611ccf0526/FLAGf4712da83 [2021-11-07 01:05:26,979 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/0e8b50768/3fabcef54169405cac7c0b611ccf0526 [2021-11-07 01:05:26,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:26,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:26,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:26,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:26,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:26,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:26" (1/1) ... [2021-11-07 01:05:26,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2260a0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:26, skipping insertion in model container [2021-11-07 01:05:26,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:26" (1/1) ... [2021-11-07 01:05:27,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:27,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:28,547 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-07 01:05:29,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:29,583 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 01:05:29,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5571d912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:29, skipping insertion in model container [2021-11-07 01:05:29,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:29,585 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:05:29,589 INFO L168 Benchmark]: Toolchain (without parser) took 2602.70 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.9 MB in the beginning and 71.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:29,590 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:05:29,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2598.50 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 71.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:05:29,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 104.9 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2598.50 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 71.8 MB in the end (delta: 4.9 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: 5901]: 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/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_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/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_9fdc8f66-41c9-4686-afae-38849f19d7ec/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 a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:05:32,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:05:32,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:05:32,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:05:32,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:05:32,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:05:32,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:05:32,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:05:32,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:05:32,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:05:32,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:05:32,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:05:32,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:05:32,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:05:32,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:05:32,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:05:32,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:05:32,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:05:32,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:05:32,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:05:32,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:05:32,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:05:32,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:05:32,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:05:32,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:05:32,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:05:32,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:05:32,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:05:32,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:05:32,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:05:32,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:05:32,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:05:32,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:05:32,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:05:32,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:05:32,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:05:32,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:05:32,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:05:32,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:05:32,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:05:32,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:05:32,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:05:32,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:05:32,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:05:32,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:05:32,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:05:32,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:05:32,851 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:05:32,851 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:05:32,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:05:32,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:05:32,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:05:32,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:05:32,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:05:32,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:05:32,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:05:32,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:05:32,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:05:32,856 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:05:32,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:05:32,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:05:32,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:05:32,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:05:32,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:05:32,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:05:32,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:32,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:05:32,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:05:32,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:05:32,859 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:05:32,859 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:32,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:05:32,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:05:32,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:05:32,860 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-11-07 01:05:33,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:05:33,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:05:33,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:05:33,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:05:33,415 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:05:33,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-07 01:05:33,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/c3d7357e7/951bdd14e84246409d2c10ecd34d906c/FLAGa074b234c [2021-11-07 01:05:34,568 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:05:34,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-07 01:05:34,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/c3d7357e7/951bdd14e84246409d2c10ecd34d906c/FLAGa074b234c [2021-11-07 01:05:34,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/data/c3d7357e7/951bdd14e84246409d2c10ecd34d906c [2021-11-07 01:05:34,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:05:34,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:05:34,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:34,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:05:34,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:05:34,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:34" (1/1) ... [2021-11-07 01:05:34,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f96ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:34, skipping insertion in model container [2021-11-07 01:05:34,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:05:34" (1/1) ... [2021-11-07 01:05:34,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:05:35,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:36,484 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-07 01:05:37,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:37,330 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:05:37,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:05:37,601 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-07 01:05:37,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:37,907 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:05:38,179 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_9fdc8f66-41c9-4686-afae-38849f19d7ec/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-11-07 01:05:38,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:05:38,449 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:05:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38 WrapperNode [2021-11-07 01:05:38,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:05:38,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:38,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:05:38,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:05:38,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:38,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:38,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:05:38,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:05:38,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:05:38,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:05:38,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:38,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:05:39,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:05:39,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:05:39,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:05:39,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (1/1) ... [2021-11-07 01:05:39,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:05:39,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:39,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:05:39,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:05:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:05:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:05:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:05:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:05:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:05:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:05:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:05:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:05:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:05:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:05:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:05:39,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:05:39,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:05:39,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:06:41,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:06:41,896 INFO L299 CfgBuilder]: Removed 1398 assume(true) statements. [2021-11-07 01:06:41,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:41 BoogieIcfgContainer [2021-11-07 01:06:41,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:06:41,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:06:41,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:06:41,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:06:41,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:05:34" (1/3) ... [2021-11-07 01:06:41,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d022fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:41, skipping insertion in model container [2021-11-07 01:06:41,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:05:38" (2/3) ... [2021-11-07 01:06:41,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d022fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:41, skipping insertion in model container [2021-11-07 01:06:41,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:41" (3/3) ... [2021-11-07 01:06:41,913 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-11-07 01:06:41,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:06:41,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:06:41,993 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:06:42,000 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 01:06:42,000 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:06:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 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 01:06:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:06:42,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:42,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:42,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash 124254041, now seen corresponding path program 1 times [2021-11-07 01:06:42,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:42,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817620631] [2021-11-07 01:06:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:42,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:42,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:42,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:42,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:06:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:06:43,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:43,234 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 01:06:43,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:43,385 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 01:06:43,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:43,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817620631] [2021-11-07 01:06:43,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817620631] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:43,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:43,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:43,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723338754] [2021-11-07 01:06:43,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:43,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:43,452 INFO L87 Difference]: Start difference. First operand has 1196 states, 1194 states have (on average 1.4028475711892798) internal successors, (1675), 1195 states have internal predecessors, (1675), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 01:06:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:46,172 INFO L93 Difference]: Finished difference Result 4706 states and 6601 transitions. [2021-11-07 01:06:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 20 [2021-11-07 01:06:46,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:46,227 INFO L225 Difference]: With dead ends: 4706 [2021-11-07 01:06:46,228 INFO L226 Difference]: Without dead ends: 3454 [2021-11-07 01:06:46,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2021-11-07 01:06:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3454. [2021-11-07 01:06:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3453 states have (on average 1.3405734144222414) internal successors, (4629), 3453 states have internal predecessors, (4629), 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 01:06:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4629 transitions. [2021-11-07 01:06:46,656 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4629 transitions. Word has length 20 [2021-11-07 01:06:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:46,659 INFO L470 AbstractCegarLoop]: Abstraction has 3454 states and 4629 transitions. [2021-11-07 01:06:46,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 01:06:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4629 transitions. [2021-11-07 01:06:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:06:46,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:46,670 INFO L513 BasicCegarLoop]: trace histogram [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 01:06:46,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:46,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:46,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash -573068823, now seen corresponding path program 1 times [2021-11-07 01:06:46,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:46,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697438767] [2021-11-07 01:06:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:46,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:46,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:46,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:46,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:06:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:47,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:47,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:47,970 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 01:06:47,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:48,247 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 01:06:48,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:48,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697438767] [2021-11-07 01:06:48,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697438767] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:48,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:48,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:06:48,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301124510] [2021-11-07 01:06:48,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:06:48,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:06:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:06:48,254 INFO L87 Difference]: Start difference. First operand 3454 states and 4629 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 01:06:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:50,092 INFO L93 Difference]: Finished difference Result 10324 states and 13844 transitions. [2021-11-07 01:06:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:50,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 24 [2021-11-07 01:06:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:50,144 INFO L225 Difference]: With dead ends: 10324 [2021-11-07 01:06:50,144 INFO L226 Difference]: Without dead ends: 6884 [2021-11-07 01:06:50,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:06:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2021-11-07 01:06:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 6788. [2021-11-07 01:06:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 6787 states have (on average 1.3385884779725947) internal successors, (9085), 6787 states have internal predecessors, (9085), 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 01:06:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 9085 transitions. [2021-11-07 01:06:50,670 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 9085 transitions. Word has length 24 [2021-11-07 01:06:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:50,673 INFO L470 AbstractCegarLoop]: Abstraction has 6788 states and 9085 transitions. [2021-11-07 01:06:50,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 01:06:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 9085 transitions. [2021-11-07 01:06:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 01:06:50,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:50,689 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, 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 01:06:50,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:50,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:50,916 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 260287450, now seen corresponding path program 1 times [2021-11-07 01:06:50,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:50,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579367136] [2021-11-07 01:06:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:50,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:50,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:50,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:06:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:51,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:51,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:52,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:52,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:52,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579367136] [2021-11-07 01:06:52,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579367136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:52,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:52,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:06:52,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671524272] [2021-11-07 01:06:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:52,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:52,657 INFO L87 Difference]: Start difference. First operand 6788 states and 9085 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 01:06:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:54,108 INFO L93 Difference]: Finished difference Result 29506 states and 39383 transitions. [2021-11-07 01:06:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-07 01:06:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:54,276 INFO L225 Difference]: With dead ends: 29506 [2021-11-07 01:06:54,276 INFO L226 Difference]: Without dead ends: 22736 [2021-11-07 01:06:54,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22736 states. [2021-11-07 01:06:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22736 to 11572. [2021-11-07 01:06:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11572 states, 11571 states have (on average 1.334197562872699) internal successors, (15438), 11571 states have internal predecessors, (15438), 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 01:06:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11572 states to 11572 states and 15438 transitions. [2021-11-07 01:06:55,453 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 15438 transitions. Word has length 63 [2021-11-07 01:06:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:55,454 INFO L470 AbstractCegarLoop]: Abstraction has 11572 states and 15438 transitions. [2021-11-07 01:06:55,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 01:06:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 15438 transitions. [2021-11-07 01:06:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:06:55,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:55,471 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, 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 01:06:55,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:55,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:55,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:06:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592412, now seen corresponding path program 1 times [2021-11-07 01:06:55,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:55,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955038340] [2021-11-07 01:06:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:55,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:55,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:55,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:06:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:56,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:06:56,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:57,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:06:57,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:57,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955038340] [2021-11-07 01:06:57,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955038340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:57,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:57,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:06:57,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210072525] [2021-11-07 01:06:57,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:57,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:57,638 INFO L87 Difference]: Start difference. First operand 11572 states and 15438 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 01:07:00,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:00,295 INFO L93 Difference]: Finished difference Result 53426 states and 71160 transitions. [2021-11-07 01:07:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-07 01:07:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:00,543 INFO L225 Difference]: With dead ends: 53426 [2021-11-07 01:07:00,544 INFO L226 Difference]: Without dead ends: 41872 [2021-11-07 01:07:00,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41872 states. [2021-11-07 01:07:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41872 to 22634. [2021-11-07 01:07:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22634 states, 22633 states have (on average 1.3325674899483055) internal successors, (30160), 22633 states have internal predecessors, (30160), 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 01:07:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22634 states to 22634 states and 30160 transitions. [2021-11-07 01:07:02,514 INFO L78 Accepts]: Start accepts. Automaton has 22634 states and 30160 transitions. Word has length 64 [2021-11-07 01:07:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:02,515 INFO L470 AbstractCegarLoop]: Abstraction has 22634 states and 30160 transitions. [2021-11-07 01:07:02,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 01:07:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 22634 states and 30160 transitions. [2021-11-07 01:07:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:07:02,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:02,532 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, 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 01:07:02,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:02,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:02,759 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:07:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:02,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1296173829, now seen corresponding path program 1 times [2021-11-07 01:07:02,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:02,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398495479] [2021-11-07 01:07:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:02,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:02,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:02,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:02,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:07:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:03,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:07:03,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:07:04,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:07:04,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:04,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398495479] [2021-11-07 01:07:04,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398495479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:04,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:04,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:07:04,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6203633] [2021-11-07 01:07:04,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:04,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:04,642 INFO L87 Difference]: Start difference. First operand 22634 states and 30160 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 01:07:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:08,676 INFO L93 Difference]: Finished difference Result 105334 states and 140168 transitions. [2021-11-07 01:07:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:08,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-07 01:07:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:09,000 INFO L225 Difference]: With dead ends: 105334 [2021-11-07 01:07:09,000 INFO L226 Difference]: Without dead ends: 82718 [2021-11-07 01:07:09,068 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82718 states. [2021-11-07 01:07:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82718 to 44290. [2021-11-07 01:07:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44290 states, 44289 states have (on average 1.3311657522183837) internal successors, (58956), 44289 states have internal predecessors, (58956), 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 01:07:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44290 states to 44290 states and 58956 transitions. [2021-11-07 01:07:12,716 INFO L78 Accepts]: Start accepts. Automaton has 44290 states and 58956 transitions. Word has length 65 [2021-11-07 01:07:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:12,716 INFO L470 AbstractCegarLoop]: Abstraction has 44290 states and 58956 transitions. [2021-11-07 01:07:12,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 01:07:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44290 states and 58956 transitions. [2021-11-07 01:07:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:07:12,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:12,735 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, 1, 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 01:07:12,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:07:12,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:12,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:07:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1636642589, now seen corresponding path program 1 times [2021-11-07 01:07:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:12,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378115206] [2021-11-07 01:07:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:12,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:12,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:12,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:12,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:07:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:13,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:07:13,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:07:14,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:07:14,837 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:14,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378115206] [2021-11-07 01:07:14,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378115206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:14,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:14,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:07:14,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967679725] [2021-11-07 01:07:14,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:14,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:14,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:14,841 INFO L87 Difference]: Start difference. First operand 44290 states and 58956 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 01:07:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:22,865 INFO L93 Difference]: Finished difference Result 207722 states and 276192 transitions. [2021-11-07 01:07:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-07 01:07:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:23,595 INFO L225 Difference]: With dead ends: 207722 [2021-11-07 01:07:23,596 INFO L226 Difference]: Without dead ends: 163450 [2021-11-07 01:07:23,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163450 states. [2021-11-07 01:07:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163450 to 86660. [2021-11-07 01:07:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86660 states, 86659 states have (on average 1.3298099447258795) internal successors, (115240), 86659 states have internal predecessors, (115240), 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 01:07:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86660 states to 86660 states and 115240 transitions. [2021-11-07 01:07:30,214 INFO L78 Accepts]: Start accepts. Automaton has 86660 states and 115240 transitions. Word has length 66 [2021-11-07 01:07:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:30,214 INFO L470 AbstractCegarLoop]: Abstraction has 86660 states and 115240 transitions. [2021-11-07 01:07:30,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 01:07:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 86660 states and 115240 transitions. [2021-11-07 01:07:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:07:30,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:30,235 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:30,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:30,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:30,450 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:07:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 929253526, now seen corresponding path program 1 times [2021-11-07 01:07:30,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:30,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473600857] [2021-11-07 01:07:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:30,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:30,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:30,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fdc8f66-41c9-4686-afae-38849f19d7ec/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:07:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:31,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:07:31,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:07:31,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:07:32,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:32,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473600857] [2021-11-07 01:07:32,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473600857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:32,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:32,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:07:32,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970821495] [2021-11-07 01:07:32,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:32,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:32,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:32,281 INFO L87 Difference]: Start difference. First operand 86660 states and 115240 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 01:07:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:44,920 INFO L93 Difference]: Finished difference Result 294724 states and 391688 transitions. [2021-11-07 01:07:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:07:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 70 [2021-11-07 01:07:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:45,901 INFO L225 Difference]: With dead ends: 294724 [2021-11-07 01:07:45,901 INFO L226 Difference]: Without dead ends: 208082 [2021-11-07 01:07:46,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:07:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208082 states.