./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/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_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/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_e475c320-8af9-4f4f-8393-3607d215ab29/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 8496dab72730c2fdef2d57f7146bbf70902e12461e751f54c291fce9b7dcf2c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:40,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:40,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:40,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:40,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:40,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:40,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:41,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:41,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:41,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:41,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:41,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:41,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:41,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:41,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:41,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:41,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:41,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:41,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:41,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:41,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:41,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:41,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:41,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:41,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:41,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:41,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:41,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:41,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:41,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:41,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:41,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:41,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:41,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:41,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:41,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:41,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:41,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:41,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:41,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:41,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:41,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:08:41,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:41,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:41,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:41,093 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:41,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:41,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:41,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:08:41,098 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:41,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:41,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:08:41,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:08:41,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:41,106 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:08:41,106 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:08:41,106 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:08:41,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:41,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:08:41,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:41,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:41,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:41,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:41,109 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:41,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:41,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:41,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:41,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:41,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:41,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:41,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:41,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:41,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:41,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:08:41,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:08:41,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:41,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:41,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:41,114 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_e475c320-8af9-4f4f-8393-3607d215ab29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8496dab72730c2fdef2d57f7146bbf70902e12461e751f54c291fce9b7dcf2c2 [2021-11-07 01:08:41,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:41,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:41,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:41,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:41,392 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:41,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i [2021-11-07 01:08:41,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/53ed8a44b/77cbdc2fa9a54166a944dd67c4afad0b/FLAG5c34b13b6 [2021-11-07 01:08:42,341 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:42,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i [2021-11-07 01:08:42,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/53ed8a44b/77cbdc2fa9a54166a944dd67c4afad0b/FLAG5c34b13b6 [2021-11-07 01:08:42,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/53ed8a44b/77cbdc2fa9a54166a944dd67c4afad0b [2021-11-07 01:08:42,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:42,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:42,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:42,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:42,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:42,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:42" (1/1) ... [2021-11-07 01:08:42,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493ad3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:42, skipping insertion in model container [2021-11-07 01:08:42,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:42" (1/1) ... [2021-11-07 01:08:42,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:43,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:43,890 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_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i[156844,156857] [2021-11-07 01:08:44,360 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 01:08:44,364 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 01:08:44,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:44,646 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:08:44,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70876771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:44, skipping insertion in model container [2021-11-07 01:08:44,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:44,654 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:08:44,656 INFO L168 Benchmark]: Toolchain (without parser) took 1785.41 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 65.1 MB in the beginning and 83.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:44,656 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:08:44,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1780.32 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 64.8 MB in the beginning and 83.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:44,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1780.32 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 64.8 MB in the beginning and 83.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 66.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5344]: 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_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/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_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/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_e475c320-8af9-4f4f-8393-3607d215ab29/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 8496dab72730c2fdef2d57f7146bbf70902e12461e751f54c291fce9b7dcf2c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:46,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:46,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:46,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:46,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:46,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:46,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:46,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:46,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:47,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:47,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:47,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:47,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:47,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:47,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:47,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:47,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:47,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:47,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:47,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:47,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:47,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:47,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:47,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:47,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:47,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:47,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:47,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:47,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:47,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:47,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:47,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:47,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:47,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:47,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:47,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:47,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:47,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:47,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:47,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:47,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:47,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:08:47,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:47,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:47,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:47,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:47,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:47,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:47,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:47,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:47,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:47,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:47,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:47,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:47,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:47,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:47,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:47,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:08:47,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:08:47,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:47,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:47,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:47,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:47,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:08:47,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:47,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:47,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:47,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:47,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:47,133 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:08:47,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:47,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:47,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:47,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:47,134 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_e475c320-8af9-4f4f-8393-3607d215ab29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8496dab72730c2fdef2d57f7146bbf70902e12461e751f54c291fce9b7dcf2c2 [2021-11-07 01:08:47,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:47,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:47,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:47,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:47,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:47,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i [2021-11-07 01:08:47,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/861bda7c5/bc363d6debf2491284bc0cbc9629ab42/FLAG1f62e5c6f [2021-11-07 01:08:48,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:48,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i [2021-11-07 01:08:48,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/861bda7c5/bc363d6debf2491284bc0cbc9629ab42/FLAG1f62e5c6f [2021-11-07 01:08:49,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/data/861bda7c5/bc363d6debf2491284bc0cbc9629ab42 [2021-11-07 01:08:49,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:49,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:49,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:49,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:49,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:49,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:49" (1/1) ... [2021-11-07 01:08:49,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cf2d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:49, skipping insertion in model container [2021-11-07 01:08:49,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:49" (1/1) ... [2021-11-07 01:08:49,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:49,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:50,214 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_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i[156844,156857] [2021-11-07 01:08:50,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:50,838 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:08:50,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:51,132 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_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i[156844,156857] [2021-11-07 01:08:51,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:51,430 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:08:51,642 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_e475c320-8af9-4f4f-8393-3607d215ab29/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i[156844,156857] [2021-11-07 01:08:51,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:51,946 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:08:51,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51 WrapperNode [2021-11-07 01:08:51,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:51,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:51,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:08:51,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:08:51,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:52,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:52,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:52,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:08:52,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:08:52,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:08:52,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:52,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:52,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:52,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:53,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:53,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:53,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:53,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:08:53,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:08:53,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:08:53,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:08:53,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (1/1) ... [2021-11-07 01:08:53,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:53,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:53,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:08:53,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:08:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:08:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:08:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:08:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:08:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:08:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:08:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_timeout [2021-11-07 01:08:53,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_timeout [2021-11-07 01:08:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:08:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:08:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:08:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:08:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:08:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure __ei_tx_timeout [2021-11-07 01:08:53,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __ei_tx_timeout [2021-11-07 01:08:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:08:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:08:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:08:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:08:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:08:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:08:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:08:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:08:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:08:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:08:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:08:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:08:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:08:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:08:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:08:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:08:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:08:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:10:41,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:10:41,559 INFO L299 CfgBuilder]: Removed 3580 assume(true) statements. [2021-11-07 01:10:41,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:41 BoogieIcfgContainer [2021-11-07 01:10:41,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:10:41,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:10:41,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:10:41,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:10:41,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:08:49" (1/3) ... [2021-11-07 01:10:41,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c97a641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:41, skipping insertion in model container [2021-11-07 01:10:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:51" (2/3) ... [2021-11-07 01:10:41,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c97a641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:10:41, skipping insertion in model container [2021-11-07 01:10:41,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:10:41" (3/3) ... [2021-11-07 01:10:41,574 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--8390--8390.ko-entry_point.cil.out.i [2021-11-07 01:10:41,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:10:41,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:10:41,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:10:41,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:10:41,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:10:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 3153 states, 3139 states have (on average 1.4186046511627908) internal successors, (4453), 3141 states have internal predecessors, (4453), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-07 01:10:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:10:41,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:41,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:41,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:10:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:41,736 INFO L85 PathProgramCache]: Analyzing trace with hash 491597893, now seen corresponding path program 1 times [2021-11-07 01:10:41,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:41,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246532286] [2021-11-07 01:10:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:41,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:41,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:41,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:10:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:43,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:10:43,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:43,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:43,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:43,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246532286] [2021-11-07 01:10:43,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246532286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:43,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:43,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:10:43,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211160696] [2021-11-07 01:10:43,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:43,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:43,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:43,474 INFO L87 Difference]: Start difference. First operand has 3153 states, 3139 states have (on average 1.4186046511627908) internal successors, (4453), 3141 states have internal predecessors, (4453), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:46,507 INFO L93 Difference]: Finished difference Result 12513 states and 17782 transitions. [2021-11-07 01:10:46,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 01:10:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:46,598 INFO L225 Difference]: With dead ends: 12513 [2021-11-07 01:10:46,599 INFO L226 Difference]: Without dead ends: 9307 [2021-11-07 01:10:46,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2021-11-07 01:10:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9307. [2021-11-07 01:10:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9307 states, 9270 states have (on average 1.3829557713052858) internal successors, (12820), 9273 states have internal predecessors, (12820), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 01:10:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 12874 transitions. [2021-11-07 01:10:47,174 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 12874 transitions. Word has length 22 [2021-11-07 01:10:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:47,174 INFO L470 AbstractCegarLoop]: Abstraction has 9307 states and 12874 transitions. [2021-11-07 01:10:47,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 12874 transitions. [2021-11-07 01:10:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:10:47,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:47,184 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:47,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:47,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:47,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:10:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:47,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1942544462, now seen corresponding path program 1 times [2021-11-07 01:10:47,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:47,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119796184] [2021-11-07 01:10:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:47,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:47,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:47,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:10:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:48,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:48,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:48,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:48,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119796184] [2021-11-07 01:10:48,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119796184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:48,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:48,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:10:48,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688389687] [2021-11-07 01:10:48,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:48,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:48,940 INFO L87 Difference]: Start difference. First operand 9307 states and 12874 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 01:10:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:49,784 INFO L93 Difference]: Finished difference Result 18591 states and 25721 transitions. [2021-11-07 01:10:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:49,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 01:10:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:49,838 INFO L225 Difference]: With dead ends: 18591 [2021-11-07 01:10:49,839 INFO L226 Difference]: Without dead ends: 9307 [2021-11-07 01:10:49,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2021-11-07 01:10:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9307. [2021-11-07 01:10:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9307 states, 9270 states have (on average 1.382740021574973) internal successors, (12818), 9273 states have internal predecessors, (12818), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-07 01:10:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9307 states to 9307 states and 12872 transitions. [2021-11-07 01:10:50,334 INFO L78 Accepts]: Start accepts. Automaton has 9307 states and 12872 transitions. Word has length 24 [2021-11-07 01:10:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:50,335 INFO L470 AbstractCegarLoop]: Abstraction has 9307 states and 12872 transitions. [2021-11-07 01:10:50,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 01:10:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9307 states and 12872 transitions. [2021-11-07 01:10:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:10:50,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:50,339 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:10:50,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:50,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:50,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:10:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1264966647, now seen corresponding path program 1 times [2021-11-07 01:10:50,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:50,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636873345] [2021-11-07 01:10:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:50,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:50,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:50,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:50,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:10:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:51,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:10:51,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:10:52,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:10:52,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:52,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636873345] [2021-11-07 01:10:52,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636873345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:52,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:52,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:10:52,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864295685] [2021-11-07 01:10:52,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:10:52,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:52,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:10:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:10:52,390 INFO L87 Difference]: Start difference. First operand 9307 states and 12872 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:55,033 INFO L93 Difference]: Finished difference Result 27873 states and 38615 transitions. [2021-11-07 01:10:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:10:55,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 37 [2021-11-07 01:10:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:55,122 INFO L225 Difference]: With dead ends: 27873 [2021-11-07 01:10:55,122 INFO L226 Difference]: Without dead ends: 18585 [2021-11-07 01:10:55,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:10:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18585 states. [2021-11-07 01:10:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18585 to 18417. [2021-11-07 01:10:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18417 states, 18344 states have (on average 1.3819777583951156) internal successors, (25351), 18350 states have internal predecessors, (25351), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (81), 54 states have call predecessors, (81), 54 states have call successors, (81) [2021-11-07 01:10:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18417 states to 18417 states and 25486 transitions. [2021-11-07 01:10:56,175 INFO L78 Accepts]: Start accepts. Automaton has 18417 states and 25486 transitions. Word has length 37 [2021-11-07 01:10:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:56,177 INFO L470 AbstractCegarLoop]: Abstraction has 18417 states and 25486 transitions. [2021-11-07 01:10:56,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18417 states and 25486 transitions. [2021-11-07 01:10:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 01:10:56,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:56,235 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:10:56,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:56,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:56,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:10:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1062707816, now seen corresponding path program 1 times [2021-11-07 01:10:56,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:56,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278974105] [2021-11-07 01:10:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:56,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:56,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:56,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:56,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:10:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:10:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:10:58,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:10:59,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:59,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278974105] [2021-11-07 01:10:59,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278974105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:59,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:59,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:10:59,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099268992] [2021-11-07 01:10:59,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:10:59,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:10:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:10:59,160 INFO L87 Difference]: Start difference. First operand 18417 states and 25486 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:00,476 INFO L93 Difference]: Finished difference Result 41245 states and 57064 transitions. [2021-11-07 01:11:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:11:00,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 116 [2021-11-07 01:11:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:00,549 INFO L225 Difference]: With dead ends: 41245 [2021-11-07 01:11:00,549 INFO L226 Difference]: Without dead ends: 22851 [2021-11-07 01:11:00,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:11:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22851 states. [2021-11-07 01:11:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22851 to 22827. [2021-11-07 01:11:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22827 states, 22724 states have (on average 1.3815349410315085) internal successors, (31394), 22734 states have internal predecessors, (31394), 72 states have call successors, (72), 30 states have call predecessors, (72), 30 states have return successors, (108), 72 states have call predecessors, (108), 72 states have call successors, (108) [2021-11-07 01:11:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22827 states to 22827 states and 31574 transitions. [2021-11-07 01:11:01,643 INFO L78 Accepts]: Start accepts. Automaton has 22827 states and 31574 transitions. Word has length 116 [2021-11-07 01:11:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:01,644 INFO L470 AbstractCegarLoop]: Abstraction has 22827 states and 31574 transitions. [2021-11-07 01:11:01,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22827 states and 31574 transitions. [2021-11-07 01:11:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 01:11:01,697 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:01,697 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:11:01,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:01,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:01,910 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:11:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash 634404866, now seen corresponding path program 2 times [2021-11-07 01:11:01,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:01,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022732247] [2021-11-07 01:11:01,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:11:01,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:01,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:01,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:11:36,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:11:36,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:11:37,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:11:37,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:11:37,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:11:38,044 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:38,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022732247] [2021-11-07 01:11:38,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022732247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:38,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:38,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:11:38,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469461531] [2021-11-07 01:11:38,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:11:38,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:11:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:11:38,047 INFO L87 Difference]: Start difference. First operand 22827 states and 31574 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:11:42,091 INFO L93 Difference]: Finished difference Result 96094 states and 133256 transitions. [2021-11-07 01:11:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:11:42,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 116 [2021-11-07 01:11:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:11:42,395 INFO L225 Difference]: With dead ends: 96094 [2021-11-07 01:11:42,395 INFO L226 Difference]: Without dead ends: 73290 [2021-11-07 01:11:42,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:11:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73290 states. [2021-11-07 01:11:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73290 to 22995. [2021-11-07 01:11:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22995 states, 22892 states have (on average 1.3787349292329198) internal successors, (31562), 22902 states have internal predecessors, (31562), 72 states have call successors, (72), 30 states have call predecessors, (72), 30 states have return successors, (108), 72 states have call predecessors, (108), 72 states have call successors, (108) [2021-11-07 01:11:44,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22995 states to 22995 states and 31742 transitions. [2021-11-07 01:11:44,772 INFO L78 Accepts]: Start accepts. Automaton has 22995 states and 31742 transitions. Word has length 116 [2021-11-07 01:11:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:11:44,773 INFO L470 AbstractCegarLoop]: Abstraction has 22995 states and 31742 transitions. [2021-11-07 01:11:44,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:11:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22995 states and 31742 transitions. [2021-11-07 01:11:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 01:11:44,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:11:44,831 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-07 01:11:44,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:11:45,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:11:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:11:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1795551080, now seen corresponding path program 1 times [2021-11-07 01:11:45,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:11:45,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749475883] [2021-11-07 01:11:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:11:45,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:11:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:11:45,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:11:45,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:11:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:11:47,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:11:47,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:11:47,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:11:48,717 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:48,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749475883] [2021-11-07 01:11:48,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749475883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:11:48,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:11:48,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-07 01:11:48,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507290825] [2021-11-07 01:11:48,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:11:48,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:11:48,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:11:48,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:11:48,720 INFO L87 Difference]: Start difference. First operand 22995 states and 31742 transitions. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:21,188 INFO L93 Difference]: Finished difference Result 146670 states and 202951 transitions. [2021-11-07 01:12:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 01:12:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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 119 [2021-11-07 01:12:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:21,816 INFO L225 Difference]: With dead ends: 146670 [2021-11-07 01:12:21,817 INFO L226 Difference]: Without dead ends: 123698 [2021-11-07 01:12:21,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=401, Invalid=1081, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 01:12:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123698 states. [2021-11-07 01:12:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123698 to 23247. [2021-11-07 01:12:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23247 states, 23144 states have (on average 1.3709816799170411) internal successors, (31730), 23154 states have internal predecessors, (31730), 72 states have call successors, (72), 30 states have call predecessors, (72), 30 states have return successors, (108), 72 states have call predecessors, (108), 72 states have call successors, (108) [2021-11-07 01:12:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23247 states to 23247 states and 31910 transitions. [2021-11-07 01:12:26,739 INFO L78 Accepts]: Start accepts. Automaton has 23247 states and 31910 transitions. Word has length 119 [2021-11-07 01:12:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:26,740 INFO L470 AbstractCegarLoop]: Abstraction has 23247 states and 31910 transitions. [2021-11-07 01:12:26,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:26,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23247 states and 31910 transitions. [2021-11-07 01:12:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:12:26,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:26,812 INFO L513 BasicCegarLoop]: trace histogram [3, 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 01:12:26,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:27,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:12:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash 486330542, now seen corresponding path program 1 times [2021-11-07 01:12:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:27,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82591047] [2021-11-07 01:12:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:27,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:27,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:27,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:12:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:29,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:29,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:29,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:30,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:30,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82591047] [2021-11-07 01:12:30,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82591047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:30,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37826181] [2021-11-07 01:12:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:30,486 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:30,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:30,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:12:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:31,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:12:31,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:12:32,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:12:32,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [37826181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:12:32,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:12:32,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:12:32,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628200050] [2021-11-07 01:12:32,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:12:32,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:12:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:12:32,671 INFO L87 Difference]: Start difference. First operand 23247 states and 31910 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:12:37,415 INFO L93 Difference]: Finished difference Result 52997 states and 72511 transitions. [2021-11-07 01:12:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:12:37,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 131 [2021-11-07 01:12:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:12:37,635 INFO L225 Difference]: With dead ends: 52997 [2021-11-07 01:12:37,635 INFO L226 Difference]: Without dead ends: 29773 [2021-11-07 01:12:37,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:12:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2021-11-07 01:12:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 23373. [2021-11-07 01:12:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23373 states, 23270 states have (on average 1.368972926514826) internal successors, (31856), 23280 states have internal predecessors, (31856), 72 states have call successors, (72), 30 states have call predecessors, (72), 30 states have return successors, (108), 72 states have call predecessors, (108), 72 states have call successors, (108) [2021-11-07 01:12:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23373 states to 23373 states and 32036 transitions. [2021-11-07 01:12:40,577 INFO L78 Accepts]: Start accepts. Automaton has 23373 states and 32036 transitions. Word has length 131 [2021-11-07 01:12:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:12:40,578 INFO L470 AbstractCegarLoop]: Abstraction has 23373 states and 32036 transitions. [2021-11-07 01:12:40,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:12:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 23373 states and 32036 transitions. [2021-11-07 01:12:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:12:40,619 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:12:40,620 INFO L513 BasicCegarLoop]: trace histogram [3, 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 01:12:40,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:12:40,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:12:41,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:12:41,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:12:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:12:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -331317908, now seen corresponding path program 1 times [2021-11-07 01:12:41,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:12:41,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296001181] [2021-11-07 01:12:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:41,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:12:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:12:41,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:12:41,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:12:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:43,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:43,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:43,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:44,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:12:44,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296001181] [2021-11-07 01:12:44,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296001181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:44,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2142179004] [2021-11-07 01:12:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:44,313 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:12:44,314 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:12:44,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:12:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:47,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:48,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2142179004] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:48,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697225537] [2021-11-07 01:12:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:12:48,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:48,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:48,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:48,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e475c320-8af9-4f4f-8393-3607d215ab29/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:12:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:12:50,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:12:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:51,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:12:51,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697225537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:51,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:12:51,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-07 01:12:51,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782015435] [2021-11-07 01:12:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:12:51,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:12:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:12:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:12:51,716 INFO L87 Difference]: Start difference. First operand 23373 states and 32036 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:08,502 INFO L93 Difference]: Finished difference Result 135339 states and 185713 transitions. [2021-11-07 01:13:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:13:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 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 131 [2021-11-07 01:13:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:08,819 INFO L225 Difference]: With dead ends: 135339 [2021-11-07 01:13:08,819 INFO L226 Difference]: Without dead ends: 111989 [2021-11-07 01:13:08,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 776 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:13:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111989 states.