./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:03:58,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:03:58,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:03:58,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:03:58,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:03:58,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:03:58,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:03:58,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:03:58,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:03:58,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:03:58,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:03:58,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:03:58,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:03:58,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:03:58,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:03:58,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:03:58,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:03:58,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:03:58,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:03:58,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:03:58,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:03:58,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:03:58,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:03:58,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:03:58,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:03:59,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:03:59,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:03:59,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:03:59,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:03:59,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:03:59,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:03:59,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:03:59,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:03:59,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:03:59,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:03:59,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:03:59,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:03:59,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:03:59,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:03:59,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:03:59,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:03:59,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:03:59,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:03:59,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:03:59,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:03:59,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:03:59,070 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:03:59,070 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:03:59,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:03:59,071 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:03:59,071 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:03:59,071 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:03:59,072 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:03:59,072 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:03:59,072 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:03:59,073 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:03:59,073 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:03:59,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:03:59,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:03:59,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:03:59,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:03:59,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:03:59,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:03:59,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:03:59,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:03:59,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:03:59,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:03:59,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:03:59,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:03:59,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:03:59,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:03:59,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:03:59,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:03:59,079 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:03:59,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:03:59,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:03:59,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:03:59,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:03:59,081 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-11-07 02:03:59,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:03:59,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:03:59,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:03:59,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:03:59,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:03:59,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 02:03:59,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/863f3611a/73e83c2e015e4b43845cafba44ea4a50/FLAG9848fab11 [2021-11-07 02:04:00,481 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:04:00,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 02:04:00,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/863f3611a/73e83c2e015e4b43845cafba44ea4a50/FLAG9848fab11 [2021-11-07 02:04:00,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/863f3611a/73e83c2e015e4b43845cafba44ea4a50 [2021-11-07 02:04:00,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:04:00,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:04:00,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:00,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:04:00,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:04:00,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:00" (1/1) ... [2021-11-07 02:04:01,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71753fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:01, skipping insertion in model container [2021-11-07 02:04:01,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:00" (1/1) ... [2021-11-07 02:04:01,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:04:01,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:02,349 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,372 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,392 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,482 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,501 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,508 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,518 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:02,691 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 02:04:02,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:02,867 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 02:04:02,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26b530e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:02, skipping insertion in model container [2021-11-07 02:04:02,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:02,868 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:04:02,871 INFO L168 Benchmark]: Toolchain (without parser) took 1880.65 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 61.1 MB in the beginning and 84.8 MB in the end (delta: -23.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:02,871 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:04:02,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1875.16 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 61.1 MB in the beginning and 84.8 MB in the end (delta: -23.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:02,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1875.16 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 61.1 MB in the beginning and 84.8 MB in the end (delta: -23.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4505]: 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:04:05,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:04:05,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:04:05,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:04:05,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:04:05,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:04:05,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:04:05,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:04:05,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:04:05,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:04:05,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:04:05,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:04:05,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:04:05,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:04:05,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:04:05,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:04:05,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:04:05,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:04:05,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:04:05,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:04:05,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:04:05,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:04:05,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:04:05,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:04:05,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:04:05,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:04:05,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:04:05,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:04:05,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:04:05,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:04:05,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:04:05,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:04:05,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:04:05,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:04:05,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:04:05,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:04:05,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:04:05,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:04:05,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:04:05,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:04:05,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:04:05,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:04:05,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:04:05,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:04:05,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:04:05,567 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:04:05,568 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:04:05,568 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:04:05,568 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:04:05,568 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:04:05,570 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:04:05,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:04:05,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:04:05,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:04:05,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:04:05,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:04:05,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:04:05,574 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:04:05,574 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:04:05,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:04:05,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:04:05,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:04:05,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:04:05,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:04:05,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:04:05,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:05,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:04:05,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:04:05,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:04:05,577 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:04:05,577 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:05,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:04:05,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:04:05,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:04:05,578 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-11-07 02:04:06,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:04:06,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:04:06,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:04:06,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:04:06,077 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:04:06,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 02:04:06,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/a910edb5c/5a80355ae16e4faa894243ff31049ed2/FLAG1168e8326 [2021-11-07 02:04:07,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:04:07,162 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 02:04:07,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/a910edb5c/5a80355ae16e4faa894243ff31049ed2/FLAG1168e8326 [2021-11-07 02:04:07,550 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/data/a910edb5c/5a80355ae16e4faa894243ff31049ed2 [2021-11-07 02:04:07,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:04:07,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:04:07,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:07,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:04:07,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:04:07,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:07" (1/1) ... [2021-11-07 02:04:07,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8dca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:07, skipping insertion in model container [2021-11-07 02:04:07,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:07" (1/1) ... [2021-11-07 02:04:07,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:04:07,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:09,291 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 02:04:09,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:09,484 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:04:09,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:09,880 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 02:04:09,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:09,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:04:10,234 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_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 02:04:10,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:10,429 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:04:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10 WrapperNode [2021-11-07 02:04:10,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:10,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:04:10,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:04:10,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:04:10,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:10,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:04:11,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:04:11,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:04:11,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:04:11,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:04:11,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:04:11,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:04:11,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:04:11,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (1/1) ... [2021-11-07 02:04:11,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:04:11,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:04:11,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:04:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:04:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:04:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:04:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:04:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:04:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2021-11-07 02:04:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2021-11-07 02:04:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2021-11-07 02:04:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2021-11-07 02:04:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2021-11-07 02:04:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2021-11-07 02:04:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:04:11,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 02:04:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:04:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:04:11,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:04:11,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:04:11,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:04:11,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:09:13,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:09:13,760 INFO L299 CfgBuilder]: Removed 1265 assume(true) statements. [2021-11-07 02:09:13,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:13 BoogieIcfgContainer [2021-11-07 02:09:13,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:09:13,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:09:13,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:09:13,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:09:13,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:04:07" (1/3) ... [2021-11-07 02:09:13,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be27e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:13, skipping insertion in model container [2021-11-07 02:09:13,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:10" (2/3) ... [2021-11-07 02:09:13,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be27e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:13, skipping insertion in model container [2021-11-07 02:09:13,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:13" (3/3) ... [2021-11-07 02:09:13,777 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 02:09:13,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:09:13,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 02:09:13,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:09:13,869 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 02:09:13,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 02:09:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 02:09:13,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:09:13,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:13,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:13,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 23961963, now seen corresponding path program 1 times [2021-11-07 02:09:13,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:13,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327087496] [2021-11-07 02:09:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:13,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:13,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:13,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:14,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:09:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:16,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:16,824 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 02:09:16,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:17,014 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 02:09:17,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:17,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327087496] [2021-11-07 02:09:17,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327087496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:17,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:17,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:17,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587700393] [2021-11-07 02:09:17,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:17,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:17,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:17,048 INFO L87 Difference]: Start difference. First operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 02:09:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:20,115 INFO L93 Difference]: Finished difference Result 5788 states and 8532 transitions. [2021-11-07 02:09:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 19 [2021-11-07 02:09:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:20,182 INFO L225 Difference]: With dead ends: 5788 [2021-11-07 02:09:20,183 INFO L226 Difference]: Without dead ends: 4326 [2021-11-07 02:09:20,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 02:09:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-11-07 02:09:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4318. [2021-11-07 02:09:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4284 states have (on average 1.4600840336134453) internal successors, (6255), 4290 states have internal predecessors, (6255), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 02:09:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 6285 transitions. [2021-11-07 02:09:20,617 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 6285 transitions. Word has length 19 [2021-11-07 02:09:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 4318 states and 6285 transitions. [2021-11-07 02:09:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 02:09:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 6285 transitions. [2021-11-07 02:09:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 02:09:20,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:20,627 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 02:09:20,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:20,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:20,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash 611773851, now seen corresponding path program 1 times [2021-11-07 02:09:20,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:20,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672197374] [2021-11-07 02:09:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:20,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:20,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:20,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:20,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:09:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:23,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:23,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:23,880 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 02:09:23,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:24,078 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 02:09:24,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:24,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672197374] [2021-11-07 02:09:24,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672197374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:24,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:24,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:24,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788870182] [2021-11-07 02:09:24,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:24,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:24,085 INFO L87 Difference]: Start difference. First operand 4318 states and 6285 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 02:09:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:26,630 INFO L93 Difference]: Finished difference Result 4318 states and 6285 transitions. [2021-11-07 02:09:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 02:09:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:26,665 INFO L225 Difference]: With dead ends: 4318 [2021-11-07 02:09:26,665 INFO L226 Difference]: Without dead ends: 4316 [2021-11-07 02:09:26,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 02:09:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-11-07 02:09:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 4316. [2021-11-07 02:09:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4283 states have (on average 1.4599579733831427) internal successors, (6253), 4288 states have internal predecessors, (6253), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 02:09:26,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6283 transitions. [2021-11-07 02:09:26,951 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6283 transitions. Word has length 23 [2021-11-07 02:09:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:26,952 INFO L470 AbstractCegarLoop]: Abstraction has 4316 states and 6283 transitions. [2021-11-07 02:09:26,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 02:09:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6283 transitions. [2021-11-07 02:09:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 02:09:26,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:26,956 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 02:09:27,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:27,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:27,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1785123424, now seen corresponding path program 1 times [2021-11-07 02:09:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:27,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544325391] [2021-11-07 02:09:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:27,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:27,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:27,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:30,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:30,223 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 02:09:30,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:30,430 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 02:09:30,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:30,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544325391] [2021-11-07 02:09:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544325391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:30,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:30,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:30,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39213939] [2021-11-07 02:09:30,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:30,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:30,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:30,433 INFO L87 Difference]: Start difference. First operand 4316 states and 6283 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 02:09:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:32,943 INFO L93 Difference]: Finished difference Result 4316 states and 6283 transitions. [2021-11-07 02:09:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 02:09:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:32,979 INFO L225 Difference]: With dead ends: 4316 [2021-11-07 02:09:32,979 INFO L226 Difference]: Without dead ends: 4314 [2021-11-07 02:09:32,986 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 02:09:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2021-11-07 02:09:33,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 4314. [2021-11-07 02:09:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 4282 states have (on average 1.4598318542737039) internal successors, (6251), 4286 states have internal predecessors, (6251), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 02:09:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 6281 transitions. [2021-11-07 02:09:33,293 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 6281 transitions. Word has length 24 [2021-11-07 02:09:33,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:33,294 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 6281 transitions. [2021-11-07 02:09:33,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 02:09:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 6281 transitions. [2021-11-07 02:09:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:09:33,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:33,299 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 02:09:33,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:33,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:33,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash -495745467, now seen corresponding path program 1 times [2021-11-07 02:09:33,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:33,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055770241] [2021-11-07 02:09:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:33,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:33,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:36,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:36,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:36,587 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 02:09:36,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:36,789 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 02:09:36,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:36,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055770241] [2021-11-07 02:09:36,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055770241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:36,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:36,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:36,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035285378] [2021-11-07 02:09:36,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:36,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:36,793 INFO L87 Difference]: Start difference. First operand 4314 states and 6281 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 02:09:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:39,390 INFO L93 Difference]: Finished difference Result 4314 states and 6281 transitions. [2021-11-07 02:09:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:39,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 02:09:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:39,423 INFO L225 Difference]: With dead ends: 4314 [2021-11-07 02:09:39,424 INFO L226 Difference]: Without dead ends: 4312 [2021-11-07 02:09:39,426 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 02:09:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2021-11-07 02:09:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4312. [2021-11-07 02:09:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4281 states have (on average 1.4597056762438683) internal successors, (6249), 4284 states have internal predecessors, (6249), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 02:09:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6279 transitions. [2021-11-07 02:09:39,750 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6279 transitions. Word has length 25 [2021-11-07 02:09:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:39,750 INFO L470 AbstractCegarLoop]: Abstraction has 4312 states and 6279 transitions. [2021-11-07 02:09:39,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 02:09:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6279 transitions. [2021-11-07 02:09:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 02:09:39,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:39,754 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 02:09:39,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:39,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:39,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1811762954, now seen corresponding path program 1 times [2021-11-07 02:09:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:39,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352634601] [2021-11-07 02:09:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:39,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:39,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:39,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:40,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:42,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:42,894 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 02:09:42,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:43,081 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 02:09:43,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:43,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352634601] [2021-11-07 02:09:43,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352634601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:43,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:43,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:43,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495123332] [2021-11-07 02:09:43,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:43,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:43,084 INFO L87 Difference]: Start difference. First operand 4312 states and 6279 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 02:09:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:45,549 INFO L93 Difference]: Finished difference Result 4312 states and 6279 transitions. [2021-11-07 02:09:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 02:09:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:45,582 INFO L225 Difference]: With dead ends: 4312 [2021-11-07 02:09:45,582 INFO L226 Difference]: Without dead ends: 4310 [2021-11-07 02:09:45,585 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 02:09:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2021-11-07 02:09:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 4310. [2021-11-07 02:09:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4280 states have (on average 1.4595794392523365) internal successors, (6247), 4282 states have internal predecessors, (6247), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-07 02:09:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 6277 transitions. [2021-11-07 02:09:45,990 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 6277 transitions. Word has length 26 [2021-11-07 02:09:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 4310 states and 6277 transitions. [2021-11-07 02:09:45,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 02:09:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 6277 transitions. [2021-11-07 02:09:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:09:45,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:45,996 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, 1] [2021-11-07 02:09:46,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:46,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:46,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash 330079983, now seen corresponding path program 1 times [2021-11-07 02:09:46,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:46,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56215000] [2021-11-07 02:09:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:46,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:46,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:46,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:46,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:09:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:48,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:49,163 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 02:09:49,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:49,396 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 02:09:49,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:49,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56215000] [2021-11-07 02:09:49,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56215000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:49,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:49,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:49,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022007850] [2021-11-07 02:09:49,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:49,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:49,399 INFO L87 Difference]: Start difference. First operand 4310 states and 6277 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:52,142 INFO L93 Difference]: Finished difference Result 9541 states and 13823 transitions. [2021-11-07 02:09:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 02:09:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:52,208 INFO L225 Difference]: With dead ends: 9541 [2021-11-07 02:09:52,208 INFO L226 Difference]: Without dead ends: 5228 [2021-11-07 02:09:52,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 02:09:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2021-11-07 02:09:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 3485. [2021-11-07 02:09:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3455 states have (on average 1.4396526772793055) internal successors, (4974), 3455 states have internal predecessors, (4974), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-07 02:09:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5008 transitions. [2021-11-07 02:09:52,522 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5008 transitions. Word has length 27 [2021-11-07 02:09:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:52,525 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 5008 transitions. [2021-11-07 02:09:52,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5008 transitions. [2021-11-07 02:09:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 02:09:52,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:52,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:52,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:52,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:52,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1512534083, now seen corresponding path program 1 times [2021-11-07 02:09:52,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:52,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529839079] [2021-11-07 02:09:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:52,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:52,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:52,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:52,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:56,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:56,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:57,248 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 02:09:57,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:57,830 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 02:09:57,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:57,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529839079] [2021-11-07 02:09:57,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529839079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:57,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:57,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:09:57,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736610102] [2021-11-07 02:09:57,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:57,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:57,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:09:57,834 INFO L87 Difference]: Start difference. First operand 3485 states and 5008 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:58,525 INFO L93 Difference]: Finished difference Result 8023 states and 11638 transitions. [2021-11-07 02:09:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 02:09:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:58,543 INFO L225 Difference]: With dead ends: 8023 [2021-11-07 02:09:58,543 INFO L226 Difference]: Without dead ends: 4541 [2021-11-07 02:09:58,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 221 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 02:09:58,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-11-07 02:09:58,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2021-11-07 02:09:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4511 states have (on average 1.462425182886278) internal successors, (6597), 4511 states have internal predecessors, (6597), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-07 02:09:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6631 transitions. [2021-11-07 02:09:58,878 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6631 transitions. Word has length 112 [2021-11-07 02:09:58,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:58,879 INFO L470 AbstractCegarLoop]: Abstraction has 4541 states and 6631 transitions. [2021-11-07 02:09:58,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:58,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6631 transitions. [2021-11-07 02:09:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 02:09:58,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:58,892 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:58,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:59,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:59,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:09:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1587100549, now seen corresponding path program 1 times [2021-11-07 02:09:59,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:59,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982424879] [2021-11-07 02:09:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:59,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:59,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:59,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:10:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:10:03,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:03,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:04,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:04,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982424879] [2021-11-07 02:10:04,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982424879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:04,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:04,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:10:04,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601940636] [2021-11-07 02:10:04,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:10:04,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:10:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:10:04,471 INFO L87 Difference]: Start difference. First operand 4541 states and 6631 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:04,907 INFO L93 Difference]: Finished difference Result 9103 states and 13305 transitions. [2021-11-07 02:10:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:04,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 02:10:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:04,925 INFO L225 Difference]: With dead ends: 9103 [2021-11-07 02:10:04,925 INFO L226 Difference]: Without dead ends: 4565 [2021-11-07 02:10:04,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:10:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2021-11-07 02:10:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4553. [2021-11-07 02:10:05,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4521 states have (on average 1.4614023446140234) internal successors, (6607), 4523 states have internal predecessors, (6607), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6643 transitions. [2021-11-07 02:10:05,335 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6643 transitions. Word has length 130 [2021-11-07 02:10:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:05,336 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6643 transitions. [2021-11-07 02:10:05,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6643 transitions. [2021-11-07 02:10:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 02:10:05,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:05,360 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:05,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:10:05,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:05,576 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1088891833, now seen corresponding path program 1 times [2021-11-07 02:10:05,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:05,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426613393] [2021-11-07 02:10:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:05,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:05,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:05,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:05,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:10:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:09,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:10:09,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:10,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:11,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:11,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426613393] [2021-11-07 02:10:11,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426613393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:11,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:11,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 02:10:11,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296734736] [2021-11-07 02:10:11,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:10:11,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:10:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:11,423 INFO L87 Difference]: Start difference. First operand 4553 states and 6643 transitions. Second operand has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:27,230 INFO L93 Difference]: Finished difference Result 10991 states and 15881 transitions. [2021-11-07 02:10:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:10:27,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 02:10:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:27,259 INFO L225 Difference]: With dead ends: 10991 [2021-11-07 02:10:27,259 INFO L226 Difference]: Without dead ends: 6441 [2021-11-07 02:10:27,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:10:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6441 states. [2021-11-07 02:10:27,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6441 to 4573. [2021-11-07 02:10:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4541 states have (on average 1.4593701827791234) internal successors, (6627), 4543 states have internal predecessors, (6627), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 6663 transitions. [2021-11-07 02:10:27,731 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 6663 transitions. Word has length 130 [2021-11-07 02:10:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:27,732 INFO L470 AbstractCegarLoop]: Abstraction has 4573 states and 6663 transitions. [2021-11-07 02:10:27,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 6663 transitions. [2021-11-07 02:10:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 02:10:27,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:27,747 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:27,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:27,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:27,964 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash 227696958, now seen corresponding path program 1 times [2021-11-07 02:10:27,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:27,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816391068] [2021-11-07 02:10:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:27,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:27,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:28,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:10:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:32,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:10:32,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:33,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:33,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:33,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816391068] [2021-11-07 02:10:33,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816391068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:33,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:33,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:10:33,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227920069] [2021-11-07 02:10:33,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:10:33,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:10:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:10:33,721 INFO L87 Difference]: Start difference. First operand 4573 states and 6663 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:35,030 INFO L93 Difference]: Finished difference Result 9175 states and 13379 transitions. [2021-11-07 02:10:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:35,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-07 02:10:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:35,050 INFO L225 Difference]: With dead ends: 9175 [2021-11-07 02:10:35,050 INFO L226 Difference]: Without dead ends: 4605 [2021-11-07 02:10:35,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:10:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-07 02:10:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4585. [2021-11-07 02:10:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4585 states, 4553 states have (on average 1.458159455304195) internal successors, (6639), 4555 states have internal predecessors, (6639), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4585 states to 4585 states and 6675 transitions. [2021-11-07 02:10:35,435 INFO L78 Accepts]: Start accepts. Automaton has 4585 states and 6675 transitions. Word has length 133 [2021-11-07 02:10:35,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:35,437 INFO L470 AbstractCegarLoop]: Abstraction has 4585 states and 6675 transitions. [2021-11-07 02:10:35,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4585 states and 6675 transitions. [2021-11-07 02:10:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 02:10:35,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:35,451 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:35,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:35,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:35,664 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 836025927, now seen corresponding path program 1 times [2021-11-07 02:10:35,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:35,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661926130] [2021-11-07 02:10:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:35,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:35,671 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:10:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:39,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:10:39,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:40,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:41,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:41,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661926130] [2021-11-07 02:10:41,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661926130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:41,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:41,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:10:41,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291919812] [2021-11-07 02:10:41,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:10:41,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:10:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:10:41,362 INFO L87 Difference]: Start difference. First operand 4585 states and 6675 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:44,195 INFO L93 Difference]: Finished difference Result 9855 states and 14297 transitions. [2021-11-07 02:10:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:44,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-07 02:10:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:44,217 INFO L225 Difference]: With dead ends: 9855 [2021-11-07 02:10:44,218 INFO L226 Difference]: Without dead ends: 5273 [2021-11-07 02:10:44,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:10:44,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2021-11-07 02:10:44,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 4597. [2021-11-07 02:10:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4565 states have (on average 1.4569550930996713) internal successors, (6651), 4567 states have internal predecessors, (6651), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 6687 transitions. [2021-11-07 02:10:44,664 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 6687 transitions. Word has length 139 [2021-11-07 02:10:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:44,664 INFO L470 AbstractCegarLoop]: Abstraction has 4597 states and 6687 transitions. [2021-11-07 02:10:44,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 6687 transitions. [2021-11-07 02:10:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:10:44,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:44,679 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:44,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:44,892 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash -378030998, now seen corresponding path program 1 times [2021-11-07 02:10:44,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:44,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025363068] [2021-11-07 02:10:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:44,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:44,897 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:44,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:10:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:49,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:10:49,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:50,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:50,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:50,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025363068] [2021-11-07 02:10:50,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025363068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:50,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:50,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:10:50,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767487683] [2021-11-07 02:10:50,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:10:50,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:10:50,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:10:50,529 INFO L87 Difference]: Start difference. First operand 4597 states and 6687 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:51,293 INFO L93 Difference]: Finished difference Result 9235 states and 13439 transitions. [2021-11-07 02:10:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:10:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 02:10:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:51,311 INFO L225 Difference]: With dead ends: 9235 [2021-11-07 02:10:51,311 INFO L226 Difference]: Without dead ends: 4641 [2021-11-07 02:10:51,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:10:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-11-07 02:10:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 4597. [2021-11-07 02:10:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4565 states have (on average 1.4569550930996713) internal successors, (6651), 4567 states have internal predecessors, (6651), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 6687 transitions. [2021-11-07 02:10:51,700 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 6687 transitions. Word has length 142 [2021-11-07 02:10:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:51,700 INFO L470 AbstractCegarLoop]: Abstraction has 4597 states and 6687 transitions. [2021-11-07 02:10:51,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 6687 transitions. [2021-11-07 02:10:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:10:51,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:51,715 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:51,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:51,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:51,940 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 855976079, now seen corresponding path program 1 times [2021-11-07 02:10:51,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:51,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818561147] [2021-11-07 02:10:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:51,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:51,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:51,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:51,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:10:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:56,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1984 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:10:56,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:57,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:10:57,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:57,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818561147] [2021-11-07 02:10:57,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818561147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:57,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:57,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:10:57,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594912482] [2021-11-07 02:10:57,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:10:57,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:10:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:10:57,847 INFO L87 Difference]: Start difference. First operand 4597 states and 6687 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:58,298 INFO L93 Difference]: Finished difference Result 9239 states and 13443 transitions. [2021-11-07 02:10:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:10:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-07 02:10:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:58,314 INFO L225 Difference]: With dead ends: 9239 [2021-11-07 02:10:58,315 INFO L226 Difference]: Without dead ends: 4645 [2021-11-07 02:10:58,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:10:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2021-11-07 02:10:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 4611. [2021-11-07 02:10:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4611 states, 4579 states have (on average 1.4555579820921598) internal successors, (6665), 4581 states have internal predecessors, (6665), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:10:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 6701 transitions. [2021-11-07 02:10:58,751 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 6701 transitions. Word has length 142 [2021-11-07 02:10:58,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:58,752 INFO L470 AbstractCegarLoop]: Abstraction has 4611 states and 6701 transitions. [2021-11-07 02:10:58,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 6701 transitions. [2021-11-07 02:10:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 02:10:58,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:58,766 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:58,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:58,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:58,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:10:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:58,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1701167913, now seen corresponding path program 1 times [2021-11-07 02:10:58,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:58,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295167806] [2021-11-07 02:10:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:58,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:58,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:58,998 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:58,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:11:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:04,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:11:04,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:04,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:05,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:05,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295167806] [2021-11-07 02:11:05,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295167806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:05,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:05,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:11:05,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475770768] [2021-11-07 02:11:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:11:05,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:05,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:11:05,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:11:05,621 INFO L87 Difference]: Start difference. First operand 4611 states and 6701 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:06,781 INFO L93 Difference]: Finished difference Result 9937 states and 14377 transitions. [2021-11-07 02:11:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:11:06,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-07 02:11:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:06,800 INFO L225 Difference]: With dead ends: 9937 [2021-11-07 02:11:06,800 INFO L226 Difference]: Without dead ends: 5329 [2021-11-07 02:11:06,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:11:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2021-11-07 02:11:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 4623. [2021-11-07 02:11:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4591 states have (on average 1.4543672402526682) internal successors, (6677), 4593 states have internal predecessors, (6677), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 6713 transitions. [2021-11-07 02:11:07,268 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 6713 transitions. Word has length 149 [2021-11-07 02:11:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:07,268 INFO L470 AbstractCegarLoop]: Abstraction has 4623 states and 6713 transitions. [2021-11-07 02:11:07,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 6713 transitions. [2021-11-07 02:11:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 02:11:07,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:07,282 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:07,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:07,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:07,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1204917490, now seen corresponding path program 1 times [2021-11-07 02:11:07,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:07,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289661017] [2021-11-07 02:11:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:07,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:07,514 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:07,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:11:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:12,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2059 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:11:12,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:13,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:14,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:14,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289661017] [2021-11-07 02:11:14,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289661017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:14,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:14,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:11:14,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499936033] [2021-11-07 02:11:14,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:11:14,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:11:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:11:14,102 INFO L87 Difference]: Start difference. First operand 4623 states and 6713 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:15,962 INFO L93 Difference]: Finished difference Result 9981 states and 14413 transitions. [2021-11-07 02:11:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:11:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-07 02:11:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:15,986 INFO L225 Difference]: With dead ends: 9981 [2021-11-07 02:11:15,986 INFO L226 Difference]: Without dead ends: 5361 [2021-11-07 02:11:15,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:11:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-11-07 02:11:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 4647. [2021-11-07 02:11:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4647 states, 4615 states have (on average 1.4520043336944746) internal successors, (6701), 4617 states have internal predecessors, (6701), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4647 states to 4647 states and 6737 transitions. [2021-11-07 02:11:16,434 INFO L78 Accepts]: Start accepts. Automaton has 4647 states and 6737 transitions. Word has length 152 [2021-11-07 02:11:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:16,435 INFO L470 AbstractCegarLoop]: Abstraction has 4647 states and 6737 transitions. [2021-11-07 02:11:16,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4647 states and 6737 transitions. [2021-11-07 02:11:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 02:11:16,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:16,448 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:16,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:16,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:16,664 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:16,665 INFO L85 PathProgramCache]: Analyzing trace with hash -447088567, now seen corresponding path program 1 times [2021-11-07 02:11:16,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:16,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649555847] [2021-11-07 02:11:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:16,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:16,668 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:16,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:11:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:11:22,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:22,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:23,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:23,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649555847] [2021-11-07 02:11:23,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649555847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:23,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:23,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:11:23,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844666810] [2021-11-07 02:11:23,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:11:23,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:11:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:11:23,259 INFO L87 Difference]: Start difference. First operand 4647 states and 6737 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:23,668 INFO L93 Difference]: Finished difference Result 9347 states and 13551 transitions. [2021-11-07 02:11:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:11:23,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-07 02:11:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:23,678 INFO L225 Difference]: With dead ends: 9347 [2021-11-07 02:11:23,678 INFO L226 Difference]: Without dead ends: 4703 [2021-11-07 02:11:23,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:11:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-11-07 02:11:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4659. [2021-11-07 02:11:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 4627 states have (on average 1.4508320726172466) internal successors, (6713), 4629 states have internal predecessors, (6713), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6749 transitions. [2021-11-07 02:11:24,072 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6749 transitions. Word has length 158 [2021-11-07 02:11:24,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:24,073 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 6749 transitions. [2021-11-07 02:11:24,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6749 transitions. [2021-11-07 02:11:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 02:11:24,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:24,095 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:24,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:24,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:24,320 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1209766992, now seen corresponding path program 1 times [2021-11-07 02:11:24,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:24,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137986686] [2021-11-07 02:11:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:24,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:24,326 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:24,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:11:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:30,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:11:30,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:30,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:31,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:31,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137986686] [2021-11-07 02:11:31,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137986686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:31,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:31,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-07 02:11:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122639385] [2021-11-07 02:11:31,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:11:31,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:31,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:11:31,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:11:31,904 INFO L87 Difference]: Start difference. First operand 4659 states and 6749 transitions. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:34,622 INFO L93 Difference]: Finished difference Result 9997 states and 14407 transitions. [2021-11-07 02:11:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:11:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-07 02:11:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:34,632 INFO L225 Difference]: With dead ends: 9997 [2021-11-07 02:11:34,633 INFO L226 Difference]: Without dead ends: 5341 [2021-11-07 02:11:34,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-07 02:11:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-11-07 02:11:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 4683. [2021-11-07 02:11:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4651 states have (on average 1.4485056976994195) internal successors, (6737), 4653 states have internal predecessors, (6737), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6773 transitions. [2021-11-07 02:11:34,968 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6773 transitions. Word has length 162 [2021-11-07 02:11:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:34,969 INFO L470 AbstractCegarLoop]: Abstraction has 4683 states and 6773 transitions. [2021-11-07 02:11:34,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6773 transitions. [2021-11-07 02:11:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 02:11:34,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:34,982 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:35,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:35,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:35,196 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash 850175117, now seen corresponding path program 1 times [2021-11-07 02:11:35,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:35,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164430566] [2021-11-07 02:11:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:35,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:35,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:35,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:11:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:11:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:41,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:42,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:42,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164430566] [2021-11-07 02:11:42,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164430566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:42,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:42,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:11:42,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90307935] [2021-11-07 02:11:42,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:11:42,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:11:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:11:42,393 INFO L87 Difference]: Start difference. First operand 4683 states and 6773 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:42,869 INFO L93 Difference]: Finished difference Result 9451 states and 13655 transitions. [2021-11-07 02:11:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:11:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 02:11:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:42,877 INFO L225 Difference]: With dead ends: 9451 [2021-11-07 02:11:42,877 INFO L226 Difference]: Without dead ends: 4771 [2021-11-07 02:11:42,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:11:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-11-07 02:11:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 4683. [2021-11-07 02:11:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4683 states, 4651 states have (on average 1.4485056976994195) internal successors, (6737), 4653 states have internal predecessors, (6737), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4683 states to 4683 states and 6773 transitions. [2021-11-07 02:11:43,260 INFO L78 Accepts]: Start accepts. Automaton has 4683 states and 6773 transitions. Word has length 165 [2021-11-07 02:11:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:43,261 INFO L470 AbstractCegarLoop]: Abstraction has 4683 states and 6773 transitions. [2021-11-07 02:11:43,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4683 states and 6773 transitions. [2021-11-07 02:11:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 02:11:43,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:43,273 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:43,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 02:11:43,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:43,488 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1541930286, now seen corresponding path program 1 times [2021-11-07 02:11:43,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:43,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868756981] [2021-11-07 02:11:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:43,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:43,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:43,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:43,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:11:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:49,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:11:49,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:49,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:50,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:50,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868756981] [2021-11-07 02:11:50,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868756981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:50,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:50,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:11:50,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735203533] [2021-11-07 02:11:50,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:11:50,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:11:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:11:50,476 INFO L87 Difference]: Start difference. First operand 4683 states and 6773 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:50,882 INFO L93 Difference]: Finished difference Result 9667 states and 13985 transitions. [2021-11-07 02:11:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:11:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 02:11:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:50,893 INFO L225 Difference]: With dead ends: 9667 [2021-11-07 02:11:50,893 INFO L226 Difference]: Without dead ends: 4987 [2021-11-07 02:11:50,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 326 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 02:11:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-11-07 02:11:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4987. [2021-11-07 02:11:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4955 states have (on average 1.4419778002018164) internal successors, (7145), 4957 states have internal predecessors, (7145), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 02:11:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 7181 transitions. [2021-11-07 02:11:51,482 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 7181 transitions. Word has length 165 [2021-11-07 02:11:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:51,482 INFO L470 AbstractCegarLoop]: Abstraction has 4987 states and 7181 transitions. [2021-11-07 02:11:51,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 7181 transitions. [2021-11-07 02:11:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 02:11:51,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:51,495 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:51,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:51,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:51,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:11:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash -200867790, now seen corresponding path program 1 times [2021-11-07 02:11:51,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:51,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798779194] [2021-11-07 02:11:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:51,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:51,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:51,713 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:51,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 02:11:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:57,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:11:57,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:58,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:11:58,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:58,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798779194] [2021-11-07 02:11:58,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798779194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:58,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [806968813] [2021-11-07 02:11:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:58,892 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:11:58,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:11:58,895 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:11:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 02:12:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:12:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:12:02,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:12:02,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [806968813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:02,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:12:02,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:12:02,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24043850] [2021-11-07 02:12:02,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:12:02,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:12:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:12:02,674 INFO L87 Difference]: Start difference. First operand 4987 states and 7181 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:05,176 INFO L93 Difference]: Finished difference Result 6165 states and 8748 transitions. [2021-11-07 02:12:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:12:05,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-07 02:12:05,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:05,186 INFO L225 Difference]: With dead ends: 6165 [2021-11-07 02:12:05,186 INFO L226 Difference]: Without dead ends: 4974 [2021-11-07 02:12:05,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:12:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2021-11-07 02:12:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 4952. [2021-11-07 02:12:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4952 states, 4926 states have (on average 1.4435647584246853) internal successors, (7111), 4926 states have internal predecessors, (7111), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 02:12:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 7136 transitions. [2021-11-07 02:12:05,553 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 7136 transitions. Word has length 175 [2021-11-07 02:12:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:05,554 INFO L470 AbstractCegarLoop]: Abstraction has 4952 states and 7136 transitions. [2021-11-07 02:12:05,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 7136 transitions. [2021-11-07 02:12:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-07 02:12:05,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:05,572 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:05,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:05,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:05,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,990 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:12:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 710401125, now seen corresponding path program 1 times [2021-11-07 02:12:05,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:05,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17368862] [2021-11-07 02:12:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:05,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:05,996 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:12:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:14,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:12:14,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:12:15,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 02:12:17,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:17,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17368862] [2021-11-07 02:12:17,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17368862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:12:17,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523951736] [2021-11-07 02:12:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:17,280 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:12:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:12:17,281 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:12:17,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:12:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:21,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:12:21,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-07 02:12:22,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-07 02:12:23,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523951736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:23,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:12:23,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:12:23,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298194555] [2021-11-07 02:12:23,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:12:23,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:12:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:12:23,820 INFO L87 Difference]: Start difference. First operand 4952 states and 7136 transitions. Second operand has 7 states, 7 states have (on average 38.42857142857143) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:13:09,659 INFO L93 Difference]: Finished difference Result 10773 states and 15464 transitions. [2021-11-07 02:13:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:13:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.42857142857143) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2021-11-07 02:13:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:13:09,673 INFO L225 Difference]: With dead ends: 10773 [2021-11-07 02:13:09,673 INFO L226 Difference]: Without dead ends: 5824 [2021-11-07 02:13:09,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1225 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:13:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-11-07 02:13:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 4960. [2021-11-07 02:13:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4934 states have (on average 1.4428455614106201) internal successors, (7119), 4934 states have internal predecessors, (7119), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 02:13:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 7144 transitions. [2021-11-07 02:13:10,181 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 7144 transitions. Word has length 310 [2021-11-07 02:13:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:13:10,181 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 7144 transitions. [2021-11-07 02:13:10,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.42857142857143) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:13:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 7144 transitions. [2021-11-07 02:13:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-07 02:13:10,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:13:10,193 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:13:10,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:10,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 02:13:10,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:10,593 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:13:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:13:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash 133051923, now seen corresponding path program 1 times [2021-11-07 02:13:10,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:13:10,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699981301] [2021-11-07 02:13:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:10,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:13:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:13:10,599 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:13:10,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 02:13:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:13:19,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:13:21,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:13:22,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:13:22,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699981301] [2021-11-07 02:13:22,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699981301] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:13:22,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769050622] [2021-11-07 02:13:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:13:22,485 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:13:22,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:13:22,487 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:13:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 02:13:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:13:27,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:13:27,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:13:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 02:13:28,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:13:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 02:13:29,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1769050622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:13:29,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:13:29,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:13:29,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112587421] [2021-11-07 02:13:29,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:13:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:13:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:13:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:13:29,662 INFO L87 Difference]: Start difference. First operand 4960 states and 7144 transitions. Second operand has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:31,394 INFO L93 Difference]: Finished difference Result 10885 states and 15607 transitions. [2021-11-07 02:14:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:14:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2021-11-07 02:14:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:31,408 INFO L225 Difference]: With dead ends: 10885 [2021-11-07 02:14:31,408 INFO L226 Difference]: Without dead ends: 5928 [2021-11-07 02:14:31,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:14:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2021-11-07 02:14:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 4984. [2021-11-07 02:14:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4958 states have (on average 1.4407018959257765) internal successors, (7143), 4958 states have internal predecessors, (7143), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 02:14:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7168 transitions. [2021-11-07 02:14:31,721 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7168 transitions. Word has length 332 [2021-11-07 02:14:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:31,721 INFO L470 AbstractCegarLoop]: Abstraction has 4984 states and 7168 transitions. [2021-11-07 02:14:31,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7168 transitions. [2021-11-07 02:14:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-07 02:14:31,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:31,729 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:31,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:32,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:32,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:32,130 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:14:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash 483114067, now seen corresponding path program 1 times [2021-11-07 02:14:32,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:32,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290726626] [2021-11-07 02:14:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:32,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:32,136 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:32,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 02:14:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:41,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:14:41,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:14:43,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:14:44,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:44,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290726626] [2021-11-07 02:14:44,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290726626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:44,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1684438727] [2021-11-07 02:14:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:44,332 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:44,333 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:44,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 02:14:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:49,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:49,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-07 02:14:50,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-07 02:14:51,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1684438727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:51,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:14:51,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:14:51,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867384465] [2021-11-07 02:14:51,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:14:51,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:14:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:14:51,644 INFO L87 Difference]: Start difference. First operand 4984 states and 7168 transitions. Second operand has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:43,703 INFO L93 Difference]: Finished difference Result 11125 states and 15918 transitions. [2021-11-07 02:15:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:15:43,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2021-11-07 02:15:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:43,715 INFO L225 Difference]: With dead ends: 11125 [2021-11-07 02:15:43,715 INFO L226 Difference]: Without dead ends: 6144 [2021-11-07 02:15:43,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:15:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2021-11-07 02:15:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 5008. [2021-11-07 02:15:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 4982 states have (on average 1.4385788839823364) internal successors, (7167), 4982 states have internal predecessors, (7167), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 02:15:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 7192 transitions. [2021-11-07 02:15:44,072 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 7192 transitions. Word has length 332 [2021-11-07 02:15:44,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:44,073 INFO L470 AbstractCegarLoop]: Abstraction has 5008 states and 7192 transitions. [2021-11-07 02:15:44,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:15:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 7192 transitions. [2021-11-07 02:15:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-07 02:15:44,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:44,080 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:44,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:44,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:44,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:15:44,496 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:15:44,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1859842707, now seen corresponding path program 1 times [2021-11-07 02:15:44,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:44,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141777241] [2021-11-07 02:15:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:44,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:44,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:44,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-07 02:15:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:54,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:15:54,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:15:55,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:15:56,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141777241] [2021-11-07 02:15:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141777241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [700168168] [2021-11-07 02:15:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:56,967 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:56,967 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:56,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-07 02:16:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:02,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:02,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-07 02:16:03,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-07 02:16:04,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [700168168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:04,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:04,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:16:04,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482432490] [2021-11-07 02:16:04,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:16:04,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:16:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:16:04,730 INFO L87 Difference]: Start difference. First operand 5008 states and 7192 transitions. Second operand has 7 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:38,673 INFO L93 Difference]: Finished difference Result 11105 states and 15870 transitions. [2021-11-07 02:16:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:16:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2021-11-07 02:16:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:38,684 INFO L225 Difference]: With dead ends: 11105 [2021-11-07 02:16:38,684 INFO L226 Difference]: Without dead ends: 6100 [2021-11-07 02:16:38,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:16:38,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2021-11-07 02:16:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 5032. [2021-11-07 02:16:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 5006 states have (on average 1.436476228525769) internal successors, (7191), 5006 states have internal predecessors, (7191), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 02:16:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 7216 transitions. [2021-11-07 02:16:39,034 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 7216 transitions. Word has length 332 [2021-11-07 02:16:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:39,035 INFO L470 AbstractCegarLoop]: Abstraction has 5032 states and 7216 transitions. [2021-11-07 02:16:39,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 7216 transitions. [2021-11-07 02:16:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-07 02:16:39,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:39,043 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:39,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:39,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:39,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:39,468 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 02:16:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1254960045, now seen corresponding path program 1 times [2021-11-07 02:16:39,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:39,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455377157] [2021-11-07 02:16:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:39,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:39,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:39,474 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:39,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-07 02:16:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:49,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:16:49,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:16:51,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-07 02:16:52,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:52,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455377157] [2021-11-07 02:16:52,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455377157] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:52,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1970418049] [2021-11-07 02:16:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:52,479 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:52,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:52,480 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:52,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bab80413-61c9-48a0-bf3b-4cbe66ef15d0/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-07 02:16:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:58,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 3426 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:16:58,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 02:16:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 02:17:01,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1970418049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:01,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:17:01,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 02:17:01,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783094510] [2021-11-07 02:17:01,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:17:01,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:17:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:17:01,015 INFO L87 Difference]: Start difference. First operand 5032 states and 7216 transitions. Second operand has 7 states, 7 states have (on average 42.42857142857143) internal successors, (297), 7 states have internal predecessors, (297), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)