./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.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_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/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_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/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_24413665-f287-4f49-af97-f340dc79766e/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 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:11,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:11,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:11,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:11,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:11,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:11,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:11,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:11,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:11,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:11,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:11,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:11,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:11,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:11,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:11,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:11,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:11,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:11,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:11,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:11,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:11,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:11,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:11,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:11,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:11,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:11,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:11,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:11,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:11,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:11,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:11,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:11,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:12,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:12,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:12,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:12,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:12,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:12,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:12,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:12,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:12,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:54:12,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:12,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:12,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:12,047 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:12,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:12,047 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:12,048 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:12,048 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:12,048 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:12,049 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:12,050 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:12,051 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:12,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:12,051 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:12,052 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:12,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:12,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:12,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:12,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:12,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:12,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:12,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:12,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:12,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:12,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:12,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:12,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:12,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:12,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:12,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:12,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:12,080 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:12,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:12,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:12,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:12,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:12,082 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_24413665-f287-4f49-af97-f340dc79766e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 [2021-11-07 00:54:12,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:12,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:12,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:12,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:12,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:12,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2021-11-07 00:54:12,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/74a3d3c0b/0e81dc618f524862894985891ce10250/FLAG4d0dbb85e [2021-11-07 00:54:13,405 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:13,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2021-11-07 00:54:13,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/74a3d3c0b/0e81dc618f524862894985891ce10250/FLAG4d0dbb85e [2021-11-07 00:54:13,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/74a3d3c0b/0e81dc618f524862894985891ce10250 [2021-11-07 00:54:13,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:13,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:13,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:13,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356df977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:13, skipping insertion in model container [2021-11-07 00:54:13,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:13" (1/1) ... [2021-11-07 00:54:13,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:14,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:14,869 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_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2021-11-07 00:54:15,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:15,366 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 00:54:15,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@478ef28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:15, skipping insertion in model container [2021-11-07 00:54:15,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:15,367 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:54:15,369 INFO L168 Benchmark]: Toolchain (without parser) took 1460.40 ms. Allocated memory is still 127.9 MB. Free memory was 102.6 MB in the beginning and 75.8 MB in the end (delta: 26.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:15,370 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:15,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1458.07 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 75.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:15,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1458.07 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 75.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3808]: 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_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/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_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/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_24413665-f287-4f49-af97-f340dc79766e/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 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:17,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:17,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:17,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:17,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:17,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:17,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:17,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:17,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:17,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:17,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:17,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:17,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:17,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:17,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:17,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:17,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:17,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:17,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:17,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:17,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:17,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:17,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:17,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:17,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:17,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:17,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:17,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:17,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:17,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:17,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:17,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:17,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:17,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:17,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:17,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:17,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:17,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:17,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:17,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:17,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:17,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:54:17,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:17,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:17,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:17,902 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:17,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:17,903 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:17,903 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:17,903 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:17,904 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:17,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:17,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:17,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:17,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:17,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:17,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:17,906 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:54:17,906 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:54:17,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:17,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:17,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:17,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:17,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:54:17,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:17,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:17,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:17,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:17,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:17,909 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:54:17,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:17,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:17,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:17,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:17,910 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_24413665-f287-4f49-af97-f340dc79766e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63b56e314339d219b900d45eff744f2905a6b0e7256894e9da7286284d3b0c99 [2021-11-07 00:54:18,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:18,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:18,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:18,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:18,286 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:18,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2021-11-07 00:54:18,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/bc32416ef/812e849f0f844eb09107c7df53392b6d/FLAG5c2bee46e [2021-11-07 00:54:19,341 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:19,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2021-11-07 00:54:19,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/bc32416ef/812e849f0f844eb09107c7df53392b6d/FLAG5c2bee46e [2021-11-07 00:54:19,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/data/bc32416ef/812e849f0f844eb09107c7df53392b6d [2021-11-07 00:54:19,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:19,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:19,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:19,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:19,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:19,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:19" (1/1) ... [2021-11-07 00:54:19,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1283c163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:19, skipping insertion in model container [2021-11-07 00:54:19,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:19" (1/1) ... [2021-11-07 00:54:19,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:19,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:20,654 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_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2021-11-07 00:54:21,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:21,102 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:54:21,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:21,236 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_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2021-11-07 00:54:21,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:21,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:21,551 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_24413665-f287-4f49-af97-f340dc79766e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i[104745,104758] [2021-11-07 00:54:21,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:21,884 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:21,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21 WrapperNode [2021-11-07 00:54:21,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:21,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:21,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:21,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:21,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:21,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:22,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:22,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:22,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:22,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:22,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:22,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:22,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:22,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (1/1) ... [2021-11-07 00:54:22,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:22,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:22,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:54:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:54:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:54:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:54:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:54:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:54:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:54:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:54:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:54:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:54:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:54:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:54:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:54:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:48,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:48,095 INFO L299 CfgBuilder]: Removed 310 assume(true) statements. [2021-11-07 00:54:48,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:48 BoogieIcfgContainer [2021-11-07 00:54:48,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:48,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:48,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:48,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:48,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:19" (1/3) ... [2021-11-07 00:54:48,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a48628c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:48, skipping insertion in model container [2021-11-07 00:54:48,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:21" (2/3) ... [2021-11-07 00:54:48,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a48628c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:48, skipping insertion in model container [2021-11-07 00:54:48,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:48" (3/3) ... [2021-11-07 00:54:48,106 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--tablet--gtco.ko-entry_point.cil.out.i [2021-11-07 00:54:48,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:48,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 00:54:48,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:48,167 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 00:54:48,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 00:54:48,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 382 states have (on average 1.5026178010471205) internal successors, (574), 387 states have internal predecessors, (574), 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 00:54:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:54:48,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:48,199 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:48,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:54:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1148713798, now seen corresponding path program 1 times [2021-11-07 00:54:48,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:48,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840238159] [2021-11-07 00:54:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:48,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:48,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:48,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:51,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:51,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:51,424 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 00:54:51,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:51,553 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 00:54:51,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:51,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840238159] [2021-11-07 00:54:51,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840238159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:51,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:51,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:54:51,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204888160] [2021-11-07 00:54:51,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:54:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:54:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:54:51,579 INFO L87 Difference]: Start difference. First operand has 388 states, 382 states have (on average 1.5026178010471205) internal successors, (574), 387 states have internal predecessors, (574), 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 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 00:54:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:54,155 INFO L93 Difference]: Finished difference Result 1468 states and 2191 transitions. [2021-11-07 00:54:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:54:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 15 [2021-11-07 00:54:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:54,190 INFO L225 Difference]: With dead ends: 1468 [2021-11-07 00:54:54,190 INFO L226 Difference]: Without dead ends: 1069 [2021-11-07 00:54:54,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 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 00:54:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-07 00:54:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-07 00:54:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1064 states have (on average 1.4078947368421053) internal successors, (1498), 1068 states have internal predecessors, (1498), 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 00:54:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1498 transitions. [2021-11-07 00:54:54,368 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1498 transitions. Word has length 15 [2021-11-07 00:54:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:54,369 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1498 transitions. [2021-11-07 00:54:54,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 00:54:54,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1498 transitions. [2021-11-07 00:54:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:54:54,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:54,371 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] [2021-11-07 00:54:54,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:54,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:54,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:54:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1888760138, now seen corresponding path program 1 times [2021-11-07 00:54:54,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:54,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790702989] [2021-11-07 00:54:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:54,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:54,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:54,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:54:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:57,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:54:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:57,861 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 00:54:57,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:57,940 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 00:54:57,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:57,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790702989] [2021-11-07 00:54:57,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790702989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:57,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:57,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:54:57,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778442052] [2021-11-07 00:54:57,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:54:57,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:54:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:57,946 INFO L87 Difference]: Start difference. First operand 1069 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 00:54:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:58,305 INFO L93 Difference]: Finished difference Result 1099 states and 1526 transitions. [2021-11-07 00:54:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:54:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-07 00:54:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:58,313 INFO L225 Difference]: With dead ends: 1099 [2021-11-07 00:54:58,314 INFO L226 Difference]: Without dead ends: 1084 [2021-11-07 00:54:58,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:54:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-07 00:54:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1069. [2021-11-07 00:54:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1064 states have (on average 1.406954887218045) internal successors, (1497), 1068 states have internal predecessors, (1497), 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 00:54:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1497 transitions. [2021-11-07 00:54:58,367 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1497 transitions. Word has length 22 [2021-11-07 00:54:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:58,368 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1497 transitions. [2021-11-07 00:54:58,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 00:54:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1497 transitions. [2021-11-07 00:54:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 00:54:58,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:58,370 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] [2021-11-07 00:54:58,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:58,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:58,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:54:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1888700556, now seen corresponding path program 1 times [2021-11-07 00:54:58,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:58,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575258720] [2021-11-07 00:54:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:58,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:58,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:58,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:55:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:01,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:02,035 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 00:55:02,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:02,290 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 00:55:02,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:02,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575258720] [2021-11-07 00:55:02,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575258720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:02,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:02,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 00:55:02,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616045788] [2021-11-07 00:55:02,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:02,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:02,293 INFO L87 Difference]: Start difference. First operand 1069 states and 1497 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 00:55:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:02,597 INFO L93 Difference]: Finished difference Result 3189 states and 4472 transitions. [2021-11-07 00:55:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 22 [2021-11-07 00:55:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:02,617 INFO L225 Difference]: With dead ends: 3189 [2021-11-07 00:55:02,617 INFO L226 Difference]: Without dead ends: 2128 [2021-11-07 00:55:02,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 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 00:55:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-07 00:55:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2116. [2021-11-07 00:55:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2111 states have (on average 1.4050213169114163) internal successors, (2966), 2115 states have internal predecessors, (2966), 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 00:55:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2966 transitions. [2021-11-07 00:55:02,821 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2966 transitions. Word has length 22 [2021-11-07 00:55:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:02,821 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2966 transitions. [2021-11-07 00:55:02,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 00:55:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2966 transitions. [2021-11-07 00:55:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 00:55:02,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:02,829 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] [2021-11-07 00:55:02,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:03,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:03,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1579824603, now seen corresponding path program 1 times [2021-11-07 00:55:03,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:03,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864737055] [2021-11-07 00:55:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:03,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:03,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:03,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:55:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:06,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:55:06,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:06,632 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 00:55:06,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:06,937 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 00:55:06,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:06,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864737055] [2021-11-07 00:55:06,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864737055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:06,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:06,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 00:55:06,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455753313] [2021-11-07 00:55:06,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:06,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:06,940 INFO L87 Difference]: Start difference. First operand 2116 states and 2966 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 00:55:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:07,344 INFO L93 Difference]: Finished difference Result 8403 states and 11785 transitions. [2021-11-07 00:55:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:07,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 23 [2021-11-07 00:55:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:07,388 INFO L225 Difference]: With dead ends: 8403 [2021-11-07 00:55:07,388 INFO L226 Difference]: Without dead ends: 6295 [2021-11-07 00:55:07,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 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 00:55:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2021-11-07 00:55:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 4193. [2021-11-07 00:55:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4193 states, 4188 states have (on average 1.4030563514804202) internal successors, (5876), 4192 states have internal predecessors, (5876), 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 00:55:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 5876 transitions. [2021-11-07 00:55:07,685 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 5876 transitions. Word has length 23 [2021-11-07 00:55:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:07,686 INFO L470 AbstractCegarLoop]: Abstraction has 4193 states and 5876 transitions. [2021-11-07 00:55:07,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 00:55:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 5876 transitions. [2021-11-07 00:55:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 00:55:07,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:07,690 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 00:55:07,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:07,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:07,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1729922142, now seen corresponding path program 1 times [2021-11-07 00:55:07,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:07,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171725610] [2021-11-07 00:55:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:07,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:07,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:07,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:55:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:11,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:11,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:11,160 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 00:55:11,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:11,314 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 00:55:11,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:11,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171725610] [2021-11-07 00:55:11,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171725610] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:11,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:11,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:11,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989330317] [2021-11-07 00:55:11,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:11,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:11,316 INFO L87 Difference]: Start difference. First operand 4193 states and 5876 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 00:55:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:11,638 INFO L93 Difference]: Finished difference Result 6287 states and 8808 transitions. [2021-11-07 00:55:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 00:55:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:11,683 INFO L225 Difference]: With dead ends: 6287 [2021-11-07 00:55:11,683 INFO L226 Difference]: Without dead ends: 6285 [2021-11-07 00:55:11,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2021-11-07 00:55:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6283. [2021-11-07 00:55:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6283 states, 6278 states have (on average 1.4025167250716788) internal successors, (8805), 6282 states have internal predecessors, (8805), 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 00:55:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 8805 transitions. [2021-11-07 00:55:12,082 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 8805 transitions. Word has length 24 [2021-11-07 00:55:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:12,083 INFO L470 AbstractCegarLoop]: Abstraction has 6283 states and 8805 transitions. [2021-11-07 00:55:12,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 00:55:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 8805 transitions. [2021-11-07 00:55:12,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 00:55:12,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:12,084 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, 1] [2021-11-07 00:55:12,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:12,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:12,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2087978565, now seen corresponding path program 1 times [2021-11-07 00:55:12,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:12,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080332115] [2021-11-07 00:55:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:12,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:12,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:12,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:12,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:55:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:15,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:15,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:15,411 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 00:55:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:15,582 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 00:55:15,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:15,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080332115] [2021-11-07 00:55:15,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080332115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:15,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503704485] [2021-11-07 00:55:15,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:15,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:15,584 INFO L87 Difference]: Start difference. First operand 6283 states and 8805 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 00:55:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:15,848 INFO L93 Difference]: Finished difference Result 6283 states and 8805 transitions. [2021-11-07 00:55:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-11-07 00:55:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:15,886 INFO L225 Difference]: With dead ends: 6283 [2021-11-07 00:55:15,886 INFO L226 Difference]: Without dead ends: 6281 [2021-11-07 00:55:15,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2021-11-07 00:55:16,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2021-11-07 00:55:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6277 states have (on average 1.4024215389517285) internal successors, (8803), 6280 states have internal predecessors, (8803), 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 00:55:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 8803 transitions. [2021-11-07 00:55:16,290 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 8803 transitions. Word has length 25 [2021-11-07 00:55:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 8803 transitions. [2021-11-07 00:55:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 00:55:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 8803 transitions. [2021-11-07 00:55:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 00:55:16,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:16,292 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, 1, 1] [2021-11-07 00:55:16,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:16,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:16,523 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 302825800, now seen corresponding path program 1 times [2021-11-07 00:55:16,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:16,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486030865] [2021-11-07 00:55:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:16,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:16,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:55:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:19,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:19,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:19,717 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 00:55:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:19,883 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 00:55:19,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:19,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486030865] [2021-11-07 00:55:19,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486030865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:19,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:19,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:55:19,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969510688] [2021-11-07 00:55:19,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:19,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:19,886 INFO L87 Difference]: Start difference. First operand 6281 states and 8803 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 00:55:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:20,190 INFO L93 Difference]: Finished difference Result 6281 states and 8803 transitions. [2021-11-07 00:55:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:20,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-07 00:55:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:20,240 INFO L225 Difference]: With dead ends: 6281 [2021-11-07 00:55:20,240 INFO L226 Difference]: Without dead ends: 6272 [2021-11-07 00:55:20,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-11-07 00:55:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 6272. [2021-11-07 00:55:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6272 states, 6269 states have (on average 1.4022970170681128) internal successors, (8791), 6271 states have internal predecessors, (8791), 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 00:55:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 8791 transitions. [2021-11-07 00:55:20,694 INFO L78 Accepts]: Start accepts. Automaton has 6272 states and 8791 transitions. Word has length 26 [2021-11-07 00:55:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:20,695 INFO L470 AbstractCegarLoop]: Abstraction has 6272 states and 8791 transitions. [2021-11-07 00:55:20,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 00:55:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6272 states and 8791 transitions. [2021-11-07 00:55:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 00:55:20,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:20,706 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] [2021-11-07 00:55:20,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:20,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:20,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash -67576925, now seen corresponding path program 1 times [2021-11-07 00:55:20,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:20,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890224436] [2021-11-07 00:55:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:20,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:20,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:55:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:24,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:24,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:24,557 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:24,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890224436] [2021-11-07 00:55:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890224436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:24,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:55:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578801876] [2021-11-07 00:55:24,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:24,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:24,560 INFO L87 Difference]: Start difference. First operand 6272 states and 8791 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 00:55:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:25,288 INFO L93 Difference]: Finished difference Result 12795 states and 17951 transitions. [2021-11-07 00:55:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-07 00:55:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:25,306 INFO L225 Difference]: With dead ends: 12795 [2021-11-07 00:55:25,306 INFO L226 Difference]: Without dead ends: 6531 [2021-11-07 00:55:25,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2021-11-07 00:55:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 6487. [2021-11-07 00:55:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6487 states, 6484 states have (on average 1.4036088834053053) internal successors, (9101), 6486 states have internal predecessors, (9101), 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 00:55:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6487 states to 6487 states and 9101 transitions. [2021-11-07 00:55:25,683 INFO L78 Accepts]: Start accepts. Automaton has 6487 states and 9101 transitions. Word has length 61 [2021-11-07 00:55:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:25,683 INFO L470 AbstractCegarLoop]: Abstraction has 6487 states and 9101 transitions. [2021-11-07 00:55:25,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 00:55:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6487 states and 9101 transitions. [2021-11-07 00:55:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 00:55:25,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:25,686 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:25,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:25,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:25,907 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1531221519, now seen corresponding path program 1 times [2021-11-07 00:55:25,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:25,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064688974] [2021-11-07 00:55:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:25,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:25,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:25,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:25,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:55:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:29,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:55:29,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:55:29,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:55:30,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:30,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064688974] [2021-11-07 00:55:30,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064688974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:30,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:30,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 00:55:30,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275755765] [2021-11-07 00:55:30,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:55:30,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:55:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:55:30,380 INFO L87 Difference]: Start difference. First operand 6487 states and 9101 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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 00:55:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:52,351 INFO L93 Difference]: Finished difference Result 25717 states and 35555 transitions. [2021-11-07 00:55:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 00:55:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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 69 [2021-11-07 00:55:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:52,417 INFO L225 Difference]: With dead ends: 25717 [2021-11-07 00:55:52,417 INFO L226 Difference]: Without dead ends: 19238 [2021-11-07 00:55:52,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-11-07 00:55:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19238 states. [2021-11-07 00:55:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19238 to 6721. [2021-11-07 00:55:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 6718 states have (on average 1.392229830306639) internal successors, (9353), 6720 states have internal predecessors, (9353), 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 00:55:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9353 transitions. [2021-11-07 00:55:52,946 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9353 transitions. Word has length 69 [2021-11-07 00:55:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:52,947 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9353 transitions. [2021-11-07 00:55:52,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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 00:55:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9353 transitions. [2021-11-07 00:55:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 00:55:52,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:52,950 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:52,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 00:55:53,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:53,163 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:55:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash 605807179, now seen corresponding path program 1 times [2021-11-07 00:55:53,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:53,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598035664] [2021-11-07 00:55:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:53,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:53,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:53,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:55:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:56,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:55:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:55:56,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:55:57,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:57,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598035664] [2021-11-07 00:55:57,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598035664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:57,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:57,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-07 00:55:57,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633192442] [2021-11-07 00:55:57,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 00:55:57,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 00:55:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:55:57,315 INFO L87 Difference]: Start difference. First operand 6721 states and 9353 transitions. Second operand has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 00:56:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:07,602 INFO L93 Difference]: Finished difference Result 23384 states and 32304 transitions. [2021-11-07 00:56:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:56:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 71 [2021-11-07 00:56:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:07,644 INFO L225 Difference]: With dead ends: 23384 [2021-11-07 00:56:07,644 INFO L226 Difference]: Without dead ends: 16671 [2021-11-07 00:56:07,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-11-07 00:56:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16671 states. [2021-11-07 00:56:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16671 to 6721. [2021-11-07 00:56:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 6718 states have (on average 1.392229830306639) internal successors, (9353), 6720 states have internal predecessors, (9353), 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 00:56:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9353 transitions. [2021-11-07 00:56:08,209 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9353 transitions. Word has length 71 [2021-11-07 00:56:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:08,210 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9353 transitions. [2021-11-07 00:56:08,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.5) internal successors, (77), 14 states have internal predecessors, (77), 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 00:56:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9353 transitions. [2021-11-07 00:56:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 00:56:08,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:08,213 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:08,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:08,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:08,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:56:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 449215055, now seen corresponding path program 1 times [2021-11-07 00:56:08,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:08,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093088182] [2021-11-07 00:56:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:08,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:08,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:08,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:08,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:56:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:11,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:56:11,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:56:11,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:56:12,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:12,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093088182] [2021-11-07 00:56:12,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093088182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:12,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:12,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:56:12,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000150987] [2021-11-07 00:56:12,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:56:12,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:56:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:56:12,207 INFO L87 Difference]: Start difference. First operand 6721 states and 9353 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 00:56:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:13,613 INFO L93 Difference]: Finished difference Result 19307 states and 27015 transitions. [2021-11-07 00:56:13,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 73 [2021-11-07 00:56:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:13,643 INFO L225 Difference]: With dead ends: 19307 [2021-11-07 00:56:13,644 INFO L226 Difference]: Without dead ends: 12558 [2021-11-07 00:56:13,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:56:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12558 states. [2021-11-07 00:56:14,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12558 to 6721. [2021-11-07 00:56:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 6718 states have (on average 1.3895504614468592) internal successors, (9335), 6720 states have internal predecessors, (9335), 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 00:56:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9335 transitions. [2021-11-07 00:56:14,209 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9335 transitions. Word has length 73 [2021-11-07 00:56:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:14,210 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9335 transitions. [2021-11-07 00:56:14,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 00:56:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9335 transitions. [2021-11-07 00:56:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 00:56:14,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:14,213 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:14,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:14,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:14,427 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:56:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 77040683, now seen corresponding path program 1 times [2021-11-07 00:56:14,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:14,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013371103] [2021-11-07 00:56:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:14,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:14,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:14,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:14,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24413665-f287-4f49-af97-f340dc79766e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:06:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:06:49,372 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.