./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--intel--igbvf--igbvf.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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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--intel--igbvf--igbvf.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:27,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:27,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:27,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:27,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:27,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:27,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:27,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:27,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:27,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:27,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:27,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:27,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:27,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:27,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:27,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:27,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:27,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:27,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:27,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:27,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:27,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:27,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:27,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:28,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:28,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:28,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:28,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:28,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:28,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:28,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:28,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:28,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:28,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:28,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:28,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:28,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:28,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:28,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:28,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:28,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:28,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:28:28,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:28,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:28,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:28,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:28,042 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:28,042 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:28,042 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:28:28,042 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:28,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:28,043 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:28:28,043 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:28:28,043 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:28,043 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:28:28,044 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:28:28,044 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:28:28,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:28,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:28:28,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:28,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:28,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:28,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:28,046 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:28,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:28,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:28,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:28,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:28,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:28,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:28,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:28,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:28,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:28,048 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:28:28,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:28:28,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:28,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:28,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:28,049 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 [2021-11-07 01:28:28,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:28,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:28,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:28,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:28,325 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:28,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-07 01:28:28,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/7c5619f13/c530e6ce80164ec3ad888cebe7319e45/FLAG51827513c [2021-11-07 01:28:29,519 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:29,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-07 01:28:29,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/7c5619f13/c530e6ce80164ec3ad888cebe7319e45/FLAG51827513c [2021-11-07 01:28:29,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/7c5619f13/c530e6ce80164ec3ad888cebe7319e45 [2021-11-07 01:28:29,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:29,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:29,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:29,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:29,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:29,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:29" (1/1) ... [2021-11-07 01:28:29,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25aa2f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:29, skipping insertion in model container [2021-11-07 01:28:29,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:29" (1/1) ... [2021-11-07 01:28:29,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:30,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:30,894 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-07 01:28:33,070 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 01:28:33,128 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 01:28:33,129 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 01:28:33,224 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 01:28:33,310 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 01:28:33,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:33,737 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 01:28:33,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39d747c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:33, skipping insertion in model container [2021-11-07 01:28:33,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:33,738 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:28:33,741 INFO L168 Benchmark]: Toolchain (without parser) took 3923.35 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 73.7 MB in the beginning and 65.5 MB in the end (delta: 8.2 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:33,742 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:28:33,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3908.61 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 73.3 MB in the beginning and 65.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:28:33,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3908.61 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 73.3 MB in the beginning and 65.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 54.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7257]: 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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--intel--igbvf--igbvf.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:28:36,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:28:36,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:28:36,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:28:36,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:28:36,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:28:36,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:28:36,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:28:36,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:28:36,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:28:36,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:28:36,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:28:36,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:28:36,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:28:36,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:28:36,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:28:36,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:28:36,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:28:36,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:28:36,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:28:36,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:28:36,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:28:36,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:28:36,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:28:36,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:28:36,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:28:36,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:28:36,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:28:36,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:28:36,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:28:36,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:28:36,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:28:36,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:28:36,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:28:36,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:28:36,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:28:36,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:28:36,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:28:36,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:28:36,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:28:36,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:28:36,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:28:36,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:28:36,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:28:36,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:28:36,237 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:28:36,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:28:36,237 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:28:36,238 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:28:36,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:28:36,238 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:28:36,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:28:36,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:28:36,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:28:36,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:28:36,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:28:36,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:28:36,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:28:36,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:28:36,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:28:36,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:28:36,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:28:36,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:28:36,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:28:36,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:28:36,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:36,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:28:36,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:28:36,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:28:36,244 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:28:36,245 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:36,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:28:36,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:28:36,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:28:36,245 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 [2021-11-07 01:28:36,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:28:36,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:28:36,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:28:36,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:28:36,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:28:36,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/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--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-07 01:28:36,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/8b8ef7951/364e0cb0d78f48df970b1dcc5386c4eb/FLAGfd37ddaf6 [2021-11-07 01:28:37,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:28:37,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-07 01:28:37,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/8b8ef7951/364e0cb0d78f48df970b1dcc5386c4eb/FLAGfd37ddaf6 [2021-11-07 01:28:38,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/data/8b8ef7951/364e0cb0d78f48df970b1dcc5386c4eb [2021-11-07 01:28:38,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:28:38,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:28:38,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:38,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:28:38,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:28:38,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:38" (1/1) ... [2021-11-07 01:28:38,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5a1a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:38, skipping insertion in model container [2021-11-07 01:28:38,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:28:38" (1/1) ... [2021-11-07 01:28:38,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:28:38,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:39,346 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-07 01:28:42,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:42,335 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:28:42,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:28:42,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-07 01:28:42,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:42,966 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:28:43,102 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_89da8e5b-65c6-46f6-9464-b4de8b58be2f/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-07 01:28:43,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:28:43,980 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:28:43,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43 WrapperNode [2021-11-07 01:28:43,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:28:43,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:28:43,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:28:43,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:28:43,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:44,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:45,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:28:45,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:28:45,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:28:45,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:28:45,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:45,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:45,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:45,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:46,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:47,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:47,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:47,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:28:47,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:28:47,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:28:47,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:28:47,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (1/1) ... [2021-11-07 01:28:47,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:28:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:28:47,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:28:47,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:28:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-07 01:28:47,714 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-07 01:28:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 01:28:47,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:28:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:28:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:28:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:28:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 01:28:47,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:28:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:28:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:28:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:28:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:28:47,716 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-07 01:28:47,716 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-07 01:28:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:28:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-07 01:28:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-07 01:28:47,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:28:47,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:28:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-07 01:28:47,718 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-07 01:28:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:28:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:28:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:28:47,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:28:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:28:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:28:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-07 01:28:47,719 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-07 01:28:47,719 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-07 01:28:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-07 01:28:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:28:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:28:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 01:28:47,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 01:28:47,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:28:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:28:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:28:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:28:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:28:47,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 01:28:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 01:28:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-07 01:28:47,722 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-07 01:28:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:28:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:28:47,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:28:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:28:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-07 01:28:47,723 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-07 01:28:47,723 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 01:39:32,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:39:32,871 INFO L299 CfgBuilder]: Removed 8531 assume(true) statements. [2021-11-07 01:39:32,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:32 BoogieIcfgContainer [2021-11-07 01:39:32,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:39:32,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:39:32,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:39:32,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:39:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:28:38" (1/3) ... [2021-11-07 01:39:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64faf6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:32, skipping insertion in model container [2021-11-07 01:39:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:28:43" (2/3) ... [2021-11-07 01:39:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64faf6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:32, skipping insertion in model container [2021-11-07 01:39:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:32" (3/3) ... [2021-11-07 01:39:32,892 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-07 01:39:32,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:39:32,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:39:32,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:39:33,003 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 01:39:33,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:39:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 8673 states, 8538 states have (on average 1.3836964160224876) internal successors, (11814), 8539 states have internal predecessors, (11814), 123 states have call successors, (123), 10 states have call predecessors, (123), 10 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-07 01:39:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:39:33,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:33,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:33,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -589120283, now seen corresponding path program 1 times [2021-11-07 01:39:33,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:33,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987511804] [2021-11-07 01:39:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:33,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:33,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:33,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:39:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:35,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:35,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:36,287 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 01:39:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:36,557 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 01:39:36,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:36,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987511804] [2021-11-07 01:39:36,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987511804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:36,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:36,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:39:36,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115236670] [2021-11-07 01:39:36,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:36,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:39:36,601 INFO L87 Difference]: Start difference. First operand has 8673 states, 8538 states have (on average 1.3836964160224876) internal successors, (11814), 8539 states have internal predecessors, (11814), 123 states have call successors, (123), 10 states have call predecessors, (123), 10 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:39:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:39,187 INFO L93 Difference]: Finished difference Result 17349 states and 24129 transitions. [2021-11-07 01:39:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 44 [2021-11-07 01:39:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:39,260 INFO L225 Difference]: With dead ends: 17349 [2021-11-07 01:39:39,260 INFO L226 Difference]: Without dead ends: 8518 [2021-11-07 01:39:39,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 01:39:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2021-11-07 01:39:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8518. [2021-11-07 01:39:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8518 states, 8384 states have (on average 1.350429389312977) internal successors, (11322), 8384 states have internal predecessors, (11322), 123 states have call successors, (123), 10 states have call predecessors, (123), 10 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-07 01:39:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8518 states to 8518 states and 11568 transitions. [2021-11-07 01:39:39,659 INFO L78 Accepts]: Start accepts. Automaton has 8518 states and 11568 transitions. Word has length 44 [2021-11-07 01:39:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:39,660 INFO L470 AbstractCegarLoop]: Abstraction has 8518 states and 11568 transitions. [2021-11-07 01:39:39,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 01:39:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8518 states and 11568 transitions. [2021-11-07 01:39:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:39:39,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:39,665 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:39:39,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:39,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:39,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1992098357, now seen corresponding path program 1 times [2021-11-07 01:39:39,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:39,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903276120] [2021-11-07 01:39:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:39,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:39,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:39,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:39,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:39:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:42,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:43,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:43,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:43,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903276120] [2021-11-07 01:39:43,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903276120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:43,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [276117388] [2021-11-07 01:39:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:43,914 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:43,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:43,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:39:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:46,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:39:46,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:39:46,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:39:46,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [276117388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:46,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:39:46,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:39:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702868443] [2021-11-07 01:39:46,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:46,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:46,673 INFO L87 Difference]: Start difference. First operand 8518 states and 11568 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:52,175 INFO L93 Difference]: Finished difference Result 33803 states and 45950 transitions. [2021-11-07 01:39:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:39:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:39:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:52,364 INFO L225 Difference]: With dead ends: 33803 [2021-11-07 01:39:52,364 INFO L226 Difference]: Without dead ends: 25336 [2021-11-07 01:39:52,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25336 states. [2021-11-07 01:39:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25336 to 25336. [2021-11-07 01:39:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25336 states, 24936 states have (on average 1.3515399422521654) internal successors, (33702), 24936 states have internal predecessors, (33702), 369 states have call successors, (369), 30 states have call predecessors, (369), 30 states have return successors, (369), 369 states have call predecessors, (369), 369 states have call successors, (369) [2021-11-07 01:39:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25336 states to 25336 states and 34440 transitions. [2021-11-07 01:39:53,620 INFO L78 Accepts]: Start accepts. Automaton has 25336 states and 34440 transitions. Word has length 51 [2021-11-07 01:39:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:53,621 INFO L470 AbstractCegarLoop]: Abstraction has 25336 states and 34440 transitions. [2021-11-07 01:39:53,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:39:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25336 states and 34440 transitions. [2021-11-07 01:39:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:39:53,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:53,629 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:39:53,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:53,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:54,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:54,049 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 228119384, now seen corresponding path program 1 times [2021-11-07 01:39:54,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:54,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959765997] [2021-11-07 01:39:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:54,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:54,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:54,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:54,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:39:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:57,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:57,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:57,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:39:58,180 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:58,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959765997] [2021-11-07 01:39:58,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959765997] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:58,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2078325702] [2021-11-07 01:39:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:58,181 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:58,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:58,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:58,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:40:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:00,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:40:00,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:40:00,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:40:01,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2078325702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:01,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:01,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 13 [2021-11-07 01:40:01,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288742254] [2021-11-07 01:40:01,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:40:01,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:40:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:40:01,258 INFO L87 Difference]: Start difference. First operand 25336 states and 34440 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 01:40:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:05,067 INFO L93 Difference]: Finished difference Result 50621 states and 68818 transitions. [2021-11-07 01:40:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:40:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 54 [2021-11-07 01:40:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:05,255 INFO L225 Difference]: With dead ends: 50621 [2021-11-07 01:40:05,255 INFO L226 Difference]: Without dead ends: 50615 [2021-11-07 01:40:05,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:40:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50615 states. [2021-11-07 01:40:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50615 to 50315. [2021-11-07 01:40:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50315 states, 49516 states have (on average 1.352290168834316) internal successors, (66960), 49516 states have internal predecessors, (66960), 738 states have call successors, (738), 60 states have call predecessors, (738), 60 states have return successors, (738), 738 states have call predecessors, (738), 738 states have call successors, (738) [2021-11-07 01:40:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50315 states to 50315 states and 68436 transitions. [2021-11-07 01:40:07,334 INFO L78 Accepts]: Start accepts. Automaton has 50315 states and 68436 transitions. Word has length 54 [2021-11-07 01:40:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:07,337 INFO L470 AbstractCegarLoop]: Abstraction has 50315 states and 68436 transitions. [2021-11-07 01:40:07,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 01:40:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 50315 states and 68436 transitions. [2021-11-07 01:40:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 01:40:07,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:07,455 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:07,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:07,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:07,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:07,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:07,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1459229464, now seen corresponding path program 1 times [2021-11-07 01:40:07,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:07,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433158068] [2021-11-07 01:40:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:07,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:07,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:07,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:07,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:40:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:11,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:11,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:40:12,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 01:40:13,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:13,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433158068] [2021-11-07 01:40:13,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433158068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:13,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [325894214] [2021-11-07 01:40:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:13,837 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:13,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:13,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:40:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:16,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:16,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:16,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:17,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [325894214] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:17,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:17,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:40:17,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034008629] [2021-11-07 01:40:17,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:17,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:17,563 INFO L87 Difference]: Start difference. First operand 50315 states and 68436 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:40:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:19,797 INFO L93 Difference]: Finished difference Result 145059 states and 197358 transitions. [2021-11-07 01:40:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:19,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-11-07 01:40:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:20,144 INFO L225 Difference]: With dead ends: 145059 [2021-11-07 01:40:20,144 INFO L226 Difference]: Without dead ends: 94795 [2021-11-07 01:40:20,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94795 states. [2021-11-07 01:40:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94795 to 94705. [2021-11-07 01:40:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94705 states, 93204 states have (on average 1.3530857044762028) internal successors, (126113), 93204 states have internal predecessors, (126113), 1380 states have call successors, (1380), 120 states have call predecessors, (1380), 120 states have return successors, (1380), 1380 states have call predecessors, (1380), 1380 states have call successors, (1380) [2021-11-07 01:40:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94705 states to 94705 states and 128873 transitions. [2021-11-07 01:40:23,896 INFO L78 Accepts]: Start accepts. Automaton has 94705 states and 128873 transitions. Word has length 162 [2021-11-07 01:40:23,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:23,897 INFO L470 AbstractCegarLoop]: Abstraction has 94705 states and 128873 transitions. [2021-11-07 01:40:23,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:40:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 94705 states and 128873 transitions. [2021-11-07 01:40:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 01:40:24,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:24,500 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:24,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:24,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:40:24,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:24,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:24,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash 190961225, now seen corresponding path program 1 times [2021-11-07 01:40:24,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:24,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230742821] [2021-11-07 01:40:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:24,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:24,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:24,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:40:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:28,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2370 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:28,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:40:29,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:40:30,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:30,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230742821] [2021-11-07 01:40:30,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230742821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:30,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [498037697] [2021-11-07 01:40:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:30,926 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:30,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:30,929 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:30,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:40:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:33,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2370 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:33,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:34,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:35,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [498037697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:35,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:35,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:40:35,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127684063] [2021-11-07 01:40:35,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:35,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:35,366 INFO L87 Difference]: Start difference. First operand 94705 states and 128873 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:40:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:39,972 INFO L93 Difference]: Finished difference Result 253893 states and 345965 transitions. [2021-11-07 01:40:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:39,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 178 [2021-11-07 01:40:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:40,816 INFO L225 Difference]: With dead ends: 253893 [2021-11-07 01:40:40,817 INFO L226 Difference]: Without dead ends: 159239 [2021-11-07 01:40:41,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159239 states. [2021-11-07 01:40:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159239 to 159233. [2021-11-07 01:40:46,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159233 states, 156628 states have (on average 1.3561368337717394) internal successors, (212409), 156628 states have internal predecessors, (212409), 2364 states have call successors, (2364), 240 states have call predecessors, (2364), 240 states have return successors, (2364), 2364 states have call predecessors, (2364), 2364 states have call successors, (2364) [2021-11-07 01:40:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159233 states to 159233 states and 217137 transitions. [2021-11-07 01:40:47,205 INFO L78 Accepts]: Start accepts. Automaton has 159233 states and 217137 transitions. Word has length 178 [2021-11-07 01:40:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:47,207 INFO L470 AbstractCegarLoop]: Abstraction has 159233 states and 217137 transitions. [2021-11-07 01:40:47,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 01:40:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 159233 states and 217137 transitions. [2021-11-07 01:40:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-07 01:40:47,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:47,519 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:47,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:47,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:47,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:47,941 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:40:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1327040577, now seen corresponding path program 1 times [2021-11-07 01:40:47,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:47,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828857225] [2021-11-07 01:40:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:47,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:47,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:47,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:40:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:51,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:51,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:40:53,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 01:40:54,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:54,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828857225] [2021-11-07 01:40:54,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828857225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:54,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1966771240] [2021-11-07 01:40:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:54,460 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:54,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da8e5b-65c6-46f6-9464-b4de8b58be2f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:40:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:57,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:58,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1966771240] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:59,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:59,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:40:59,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714898146] [2021-11-07 01:40:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:59,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:59,352 INFO L87 Difference]: Start difference. First operand 159233 states and 217137 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)