./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--usb--cx82310_eth.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_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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--usb--cx82310_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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_7bdea581-e95d-4afe-b5f2-410939ea2e39/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 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:16:01,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:01,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:01,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:01,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:01,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:01,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:01,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:01,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:01,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:01,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:01,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:01,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:01,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:01,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:01,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:01,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:01,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:01,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:02,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:02,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:02,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:02,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:02,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:02,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:02,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:02,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:02,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:02,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:02,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:02,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:02,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:02,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:02,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:02,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:02,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:02,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:02,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:02,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:02,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:02,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:02,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:16:02,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:02,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:02,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:02,077 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:02,077 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:02,077 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:02,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:16:02,078 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:02,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:02,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:16:02,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:16:02,079 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:02,080 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:16:02,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:16:02,080 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:16:02,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:02,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:16:02,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:02,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:02,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:02,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:02,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:02,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:02,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:02,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:02,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:02,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:02,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:02,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:02,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:02,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:02,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:16:02,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:16:02,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:02,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:02,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:02,087 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 [2021-11-07 01:16:02,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:02,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:02,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:02,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:02,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:02,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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--usb--cx82310_eth.ko-entry_point.cil.out.i [2021-11-07 01:16:02,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/e2945b0a2/c0d8bcbf8e024ef9a8baab9862bca9fe/FLAGacd7d9b12 [2021-11-07 01:16:03,353 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:16:03,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2021-11-07 01:16:03,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/e2945b0a2/c0d8bcbf8e024ef9a8baab9862bca9fe/FLAGacd7d9b12 [2021-11-07 01:16:03,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/e2945b0a2/c0d8bcbf8e024ef9a8baab9862bca9fe [2021-11-07 01:16:03,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:16:03,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:16:03,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:03,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:16:03,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:16:03,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:03" (1/1) ... [2021-11-07 01:16:03,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f67663b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:03, skipping insertion in model container [2021-11-07 01:16:03,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:03" (1/1) ... [2021-11-07 01:16:03,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:16:04,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:04,879 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2021-11-07 01:16:05,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:05,300 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 01:16:05,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fe46e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:05, skipping insertion in model container [2021-11-07 01:16:05,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:05,301 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:16:05,303 INFO L168 Benchmark]: Toolchain (without parser) took 1406.03 ms. Allocated memory is still 134.2 MB. Free memory was 93.2 MB in the beginning and 70.2 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:05,304 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:16:05,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1400.29 ms. Allocated memory is still 134.2 MB. Free memory was 92.9 MB in the beginning and 70.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:16:05,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 43.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1400.29 ms. Allocated memory is still 134.2 MB. Free memory was 92.9 MB in the beginning and 70.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5954]: 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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--usb--cx82310_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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_7bdea581-e95d-4afe-b5f2-410939ea2e39/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 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:16:07,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:16:07,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:16:07,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:16:07,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:16:07,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:16:07,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:16:07,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:16:07,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:16:07,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:16:07,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:16:07,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:16:07,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:16:07,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:16:07,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:16:07,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:16:07,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:16:07,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:16:07,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:16:07,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:16:07,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:16:07,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:16:07,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:16:07,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:16:07,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:16:07,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:16:07,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:16:07,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:16:07,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:16:07,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:16:07,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:16:07,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:16:07,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:16:07,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:16:07,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:16:07,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:16:07,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:16:07,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:16:07,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:16:07,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:16:07,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:16:07,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:16:07,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:16:07,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:16:07,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:16:07,832 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:16:07,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:16:07,833 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:16:07,833 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:16:07,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:16:07,833 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:16:07,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:16:07,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:16:07,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:16:07,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:16:07,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:16:07,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:16:07,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:16:07,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:16:07,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:16:07,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:07,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:16:07,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:16:07,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:16:07,839 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:16:07,840 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:07,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:16:07,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:16:07,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:16:07,840 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 [2021-11-07 01:16:08,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:16:08,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:16:08,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:16:08,246 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:16:08,247 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:16:08,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/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--usb--cx82310_eth.ko-entry_point.cil.out.i [2021-11-07 01:16:08,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/5eb415a1d/b20b5a811cd84fa49c4e3ff9a79900ed/FLAG38409eb41 [2021-11-07 01:16:09,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:16:09,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2021-11-07 01:16:09,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/5eb415a1d/b20b5a811cd84fa49c4e3ff9a79900ed/FLAG38409eb41 [2021-11-07 01:16:09,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/data/5eb415a1d/b20b5a811cd84fa49c4e3ff9a79900ed [2021-11-07 01:16:09,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:16:09,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:16:09,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:09,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:16:09,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:16:09,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:09" (1/1) ... [2021-11-07 01:16:09,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fe4ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:09, skipping insertion in model container [2021-11-07 01:16:09,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:09" (1/1) ... [2021-11-07 01:16:09,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:16:09,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:10,204 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2021-11-07 01:16:10,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:10,573 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:16:10,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:16:10,755 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2021-11-07 01:16:10,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:10,881 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:16:11,062 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_7bdea581-e95d-4afe-b5f2-410939ea2e39/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2021-11-07 01:16:11,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:16:11,209 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:16:11,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11 WrapperNode [2021-11-07 01:16:11,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:16:11,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:16:11,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:16:11,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:16:11,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:16:11,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:16:11,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:16:11,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:16:11,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:16:11,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:16:11,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:16:11,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:16:11,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (1/1) ... [2021-11-07 01:16:11,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:16:11,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:16:11,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:16:11,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:16:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:16:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:16:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:16:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:16:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:16:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:16:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:16:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:16:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:16:11,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:16:53,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:16:53,377 INFO L299 CfgBuilder]: Removed 377 assume(true) statements. [2021-11-07 01:16:53,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:53 BoogieIcfgContainer [2021-11-07 01:16:53,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:16:53,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:16:53,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:16:53,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:16:53,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:09" (1/3) ... [2021-11-07 01:16:53,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44136286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:53, skipping insertion in model container [2021-11-07 01:16:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:11" (2/3) ... [2021-11-07 01:16:53,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44136286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:53, skipping insertion in model container [2021-11-07 01:16:53,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:53" (3/3) ... [2021-11-07 01:16:53,388 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2021-11-07 01:16:53,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:16:53,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:16:53,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:16:53,450 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 01:16:53,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:16:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 447 states have (on average 1.5100671140939597) internal successors, (675), 448 states have internal predecessors, (675), 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 01:16:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:16:53,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:53,484 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] [2021-11-07 01:16:53,484 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1795372011, now seen corresponding path program 1 times [2021-11-07 01:16:53,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:53,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687374992] [2021-11-07 01:16:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:53,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:53,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:53,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:16:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:54,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:16:54,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:54,258 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 01:16:54,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:54,416 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 01:16:54,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:54,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687374992] [2021-11-07 01:16:54,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687374992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:54,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:16:54,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:16:54,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074474836] [2021-11-07 01:16:54,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:54,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:16:54,444 INFO L87 Difference]: Start difference. First operand has 449 states, 447 states have (on average 1.5100671140939597) internal successors, (675), 448 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:54,611 INFO L93 Difference]: Finished difference Result 897 states and 1351 transitions. [2021-11-07 01:16:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:16:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:54,630 INFO L225 Difference]: With dead ends: 897 [2021-11-07 01:16:54,631 INFO L226 Difference]: Without dead ends: 445 [2021-11-07 01:16:54,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 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 01:16:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-07 01:16:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-11-07 01:16:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.4166666666666667) internal successors, (629), 444 states have internal predecessors, (629), 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 01:16:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 629 transitions. [2021-11-07 01:16:54,707 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 629 transitions. Word has length 21 [2021-11-07 01:16:54,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:54,708 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 629 transitions. [2021-11-07 01:16:54,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:16:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 629 transitions. [2021-11-07 01:16:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:16:54,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:54,711 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] [2021-11-07 01:16:54,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:16:54,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:16:54,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:54,930 INFO L85 PathProgramCache]: Analyzing trace with hash -815280085, now seen corresponding path program 1 times [2021-11-07 01:16:54,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:54,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308363986] [2021-11-07 01:16:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:54,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:54,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:54,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:16:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:16:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:16:55,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:16:56,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:16:56,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308363986] [2021-11-07 01:16:56,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308363986] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:16:56,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [349287638] [2021-11-07 01:16:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:56,260 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:56,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:16:56,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:16:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:16:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:16:56,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:16:56,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:16:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:16:56,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:16:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:16:57,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [349287638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:16:57,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:16:57,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:16:57,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755873606] [2021-11-07 01:16:57,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:16:57,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:16:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:16:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:57,023 INFO L87 Difference]: Start difference. First operand 445 states and 629 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 01:16:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:16:59,279 INFO L93 Difference]: Finished difference Result 1667 states and 2385 transitions. [2021-11-07 01:16:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:16:59,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 01:16:59,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:16:59,293 INFO L225 Difference]: With dead ends: 1667 [2021-11-07 01:16:59,294 INFO L226 Difference]: Without dead ends: 1238 [2021-11-07 01:16:59,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:16:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-11-07 01:16:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-11-07 01:16:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.4316895715440583) internal successors, (1771), 1237 states have internal predecessors, (1771), 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 01:16:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1771 transitions. [2021-11-07 01:16:59,391 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1771 transitions. Word has length 25 [2021-11-07 01:16:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:16:59,391 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1771 transitions. [2021-11-07 01:16:59,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 01:16:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1771 transitions. [2021-11-07 01:16:59,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:16:59,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:16:59,401 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] [2021-11-07 01:16:59,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:59,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:16:59,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:16:59,815 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:16:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:16:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 618129762, now seen corresponding path program 1 times [2021-11-07 01:16:59,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:16:59,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169298333] [2021-11-07 01:16:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:16:59,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:16:59,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:16:59,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:16:59,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:17:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:00,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:00,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:17:00,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:17:01,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:01,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169298333] [2021-11-07 01:17:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169298333] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:01,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1870584557] [2021-11-07 01:17:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:01,005 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:01,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:01,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:01,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:17:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:01,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:17:01,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:01,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:02,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1870584557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:02,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:17:02,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 13 [2021-11-07 01:17:02,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924565143] [2021-11-07 01:17:02,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:17:02,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:17:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:17:02,257 INFO L87 Difference]: Start difference. First operand 1238 states and 1771 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:02,812 INFO L93 Difference]: Finished difference Result 3680 states and 5274 transitions. [2021-11-07 01:17:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-07 01:17:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:02,828 INFO L225 Difference]: With dead ends: 3680 [2021-11-07 01:17:02,828 INFO L226 Difference]: Without dead ends: 2453 [2021-11-07 01:17:02,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2021-11-07 01:17:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2453. [2021-11-07 01:17:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2452 states have (on average 1.428221859706362) internal successors, (3502), 2452 states have internal predecessors, (3502), 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 01:17:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3502 transitions. [2021-11-07 01:17:02,921 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3502 transitions. Word has length 32 [2021-11-07 01:17:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:02,922 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3502 transitions. [2021-11-07 01:17:02,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3502 transitions. [2021-11-07 01:17:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:17:02,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:02,927 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:02,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:03,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:03,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:03,344 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -147400964, now seen corresponding path program 1 times [2021-11-07 01:17:03,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:03,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576997408] [2021-11-07 01:17:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:03,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:03,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:03,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:03,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:17:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:03,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:03,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:04,269 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 01:17:04,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:04,741 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 01:17:04,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:04,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576997408] [2021-11-07 01:17:04,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576997408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:04,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461349298] [2021-11-07 01:17:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:04,742 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:04,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:04,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:17:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:05,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:17:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:05,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:05,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1461349298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:05,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:17:05,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:17:05,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966072566] [2021-11-07 01:17:05,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:17:05,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:17:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:05,796 INFO L87 Difference]: Start difference. First operand 2453 states and 3502 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:17:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:06,215 INFO L93 Difference]: Finished difference Result 5147 states and 7387 transitions. [2021-11-07 01:17:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:17:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:17:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:06,232 INFO L225 Difference]: With dead ends: 5147 [2021-11-07 01:17:06,232 INFO L226 Difference]: Without dead ends: 2710 [2021-11-07 01:17:06,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:06,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-11-07 01:17:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2665. [2021-11-07 01:17:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2664 states have (on average 1.438063063063063) internal successors, (3831), 2664 states have internal predecessors, (3831), 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 01:17:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 3831 transitions. [2021-11-07 01:17:06,351 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 3831 transitions. Word has length 54 [2021-11-07 01:17:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:06,351 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 3831 transitions. [2021-11-07 01:17:06,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 01:17:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 3831 transitions. [2021-11-07 01:17:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:17:06,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:06,356 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:06,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:06,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:17:06,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:06,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1569563732, now seen corresponding path program 1 times [2021-11-07 01:17:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:06,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40348707] [2021-11-07 01:17:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:06,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:06,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:06,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:17:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:07,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:07,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:07,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:08,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:08,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40348707] [2021-11-07 01:17:08,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40348707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:08,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1726457992] [2021-11-07 01:17:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:08,412 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:08,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:08,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:08,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:17:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:09,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:17:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:09,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:17:09,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1726457992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:09,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:17:09,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:17:09,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394497133] [2021-11-07 01:17:09,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:17:09,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:17:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:09,765 INFO L87 Difference]: Start difference. First operand 2665 states and 3831 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:12,159 INFO L93 Difference]: Finished difference Result 5643 states and 8177 transitions. [2021-11-07 01:17:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:17:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:17:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:12,211 INFO L225 Difference]: With dead ends: 5643 [2021-11-07 01:17:12,211 INFO L226 Difference]: Without dead ends: 2994 [2021-11-07 01:17:12,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:17:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-11-07 01:17:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2987. [2021-11-07 01:17:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2986 states have (on average 1.4457468184862692) internal successors, (4317), 2986 states have internal predecessors, (4317), 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 01:17:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 4317 transitions. [2021-11-07 01:17:12,346 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 4317 transitions. Word has length 68 [2021-11-07 01:17:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:12,348 INFO L470 AbstractCegarLoop]: Abstraction has 2987 states and 4317 transitions. [2021-11-07 01:17:12,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 4317 transitions. [2021-11-07 01:17:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:17:12,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:12,353 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:12,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:12,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:12,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:17:12,761 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash 321285970, now seen corresponding path program 1 times [2021-11-07 01:17:12,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:12,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532270188] [2021-11-07 01:17:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:12,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:12,763 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:12,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:17:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:13,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:13,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:14,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:14,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532270188] [2021-11-07 01:17:14,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532270188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:14,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769496842] [2021-11-07 01:17:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:14,310 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:14,311 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:14,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:17:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:15,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:15,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:15,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1769496842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638662393] [2021-11-07 01:17:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:16,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:16,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:16,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:17:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:16,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:17:16,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:17,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:17,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638662393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:17,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:17,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 01:17:17,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387603923] [2021-11-07 01:17:17,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:17:17,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:17:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:17:17,208 INFO L87 Difference]: Start difference. First operand 2987 states and 4317 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:18,117 INFO L93 Difference]: Finished difference Result 13465 states and 19601 transitions. [2021-11-07 01:17:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:17:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:18,190 INFO L225 Difference]: With dead ends: 13465 [2021-11-07 01:17:18,190 INFO L226 Difference]: Without dead ends: 10494 [2021-11-07 01:17:18,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10494 states. [2021-11-07 01:17:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10494 to 3035. [2021-11-07 01:17:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3034 states have (on average 1.4386947923533289) internal successors, (4365), 3034 states have internal predecessors, (4365), 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 01:17:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4365 transitions. [2021-11-07 01:17:18,488 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4365 transitions. Word has length 68 [2021-11-07 01:17:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:18,489 INFO L470 AbstractCegarLoop]: Abstraction has 3035 states and 4365 transitions. [2021-11-07 01:17:18,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4365 transitions. [2021-11-07 01:17:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:17:18,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:18,493 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:18,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:18,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:18,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-07 01:17:19,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:19,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:19,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1614217270, now seen corresponding path program 1 times [2021-11-07 01:17:19,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:19,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845610791] [2021-11-07 01:17:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:19,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:19,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:19,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:19,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:17:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:19,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:20,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:20,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:20,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845610791] [2021-11-07 01:17:20,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845610791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:20,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295813158] [2021-11-07 01:17:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:20,758 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:20,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:20,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:17:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:21,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:17:21,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:22,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:22,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295813158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:22,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:17:22,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [5, 5] total 14 [2021-11-07 01:17:22,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238306031] [2021-11-07 01:17:22,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:22,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:22,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:22,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:17:22,295 INFO L87 Difference]: Start difference. First operand 3035 states and 4365 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 01:17:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:24,915 INFO L93 Difference]: Finished difference Result 13009 states and 18941 transitions. [2021-11-07 01:17:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:17:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:17:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:24,970 INFO L225 Difference]: With dead ends: 13009 [2021-11-07 01:17:24,971 INFO L226 Difference]: Without dead ends: 9990 [2021-11-07 01:17:24,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:17:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9990 states. [2021-11-07 01:17:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9990 to 3083. [2021-11-07 01:17:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3082 states have (on average 1.4240752757949384) internal successors, (4389), 3082 states have internal predecessors, (4389), 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 01:17:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4389 transitions. [2021-11-07 01:17:25,288 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4389 transitions. Word has length 71 [2021-11-07 01:17:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:25,288 INFO L470 AbstractCegarLoop]: Abstraction has 3083 states and 4389 transitions. [2021-11-07 01:17:25,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 01:17:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4389 transitions. [2021-11-07 01:17:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:17:25,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:25,292 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:25,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:25,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:25,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:25,707 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash 682645487, now seen corresponding path program 1 times [2021-11-07 01:17:25,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:25,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102577266] [2021-11-07 01:17:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:25,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:25,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:17:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:26,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:26,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:26,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:27,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:27,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102577266] [2021-11-07 01:17:27,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102577266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:27,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829813482] [2021-11-07 01:17:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:27,450 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:27,453 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:27,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:17:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:28,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:28,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:29,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:29,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829813482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:29,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069646595] [2021-11-07 01:17:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:29,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:29,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:29,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:29,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:17:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:30,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:17:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:31,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:17:32,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069646595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:32,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:17:32,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [5, 5, 5, 5] total 24 [2021-11-07 01:17:32,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631881885] [2021-11-07 01:17:32,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:17:32,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:17:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:17:32,774 INFO L87 Difference]: Start difference. First operand 3083 states and 4389 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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 01:17:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:44,526 INFO L93 Difference]: Finished difference Result 21809 states and 31693 transitions. [2021-11-07 01:17:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 01:17:44,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:17:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:44,626 INFO L225 Difference]: With dead ends: 21809 [2021-11-07 01:17:44,626 INFO L226 Difference]: Without dead ends: 18742 [2021-11-07 01:17:44,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=525, Invalid=1925, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 01:17:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18742 states. [2021-11-07 01:17:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18742 to 3251. [2021-11-07 01:17:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 3250 states have (on average 1.4095384615384616) internal successors, (4581), 3250 states have internal predecessors, (4581), 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 01:17:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4581 transitions. [2021-11-07 01:17:45,348 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4581 transitions. Word has length 73 [2021-11-07 01:17:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:45,348 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 4581 transitions. [2021-11-07 01:17:45,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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 01:17:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4581 transitions. [2021-11-07 01:17:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:17:45,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:45,354 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:17:45,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:45,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:45,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-07 01:17:45,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:45,963 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:45,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1579186001, now seen corresponding path program 1 times [2021-11-07 01:17:45,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:45,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195279196] [2021-11-07 01:17:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:45,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:45,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:17:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:46,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:46,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:47,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:47,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:17:47,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195279196] [2021-11-07 01:17:47,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195279196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:47,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1938859571] [2021-11-07 01:17:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:47,918 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:17:47,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:17:47,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:17:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:49,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:17:49,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:49,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:50,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1938859571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:50,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485879265] [2021-11-07 01:17:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:50,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:17:50,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:50,319 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:17:50,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:17:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:51,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:17:51,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:17:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:51,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:17:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:17:52,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485879265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:17:52,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:17:52,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-07 01:17:52,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748386388] [2021-11-07 01:17:52,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:17:52,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:17:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:17:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:17:52,257 INFO L87 Difference]: Start difference. First operand 3251 states and 4581 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 01:17:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:53,084 INFO L93 Difference]: Finished difference Result 6499 states and 9165 transitions. [2021-11-07 01:17:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:17:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 85 [2021-11-07 01:17:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:53,091 INFO L225 Difference]: With dead ends: 6499 [2021-11-07 01:17:53,092 INFO L226 Difference]: Without dead ends: 3259 [2021-11-07 01:17:53,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2021-11-07 01:17:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 3259. [2021-11-07 01:17:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3258 states have (on average 1.40914671577655) internal successors, (4591), 3258 states have internal predecessors, (4591), 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 01:17:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4591 transitions. [2021-11-07 01:17:53,556 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4591 transitions. Word has length 85 [2021-11-07 01:17:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:53,556 INFO L470 AbstractCegarLoop]: Abstraction has 3259 states and 4591 transitions. [2021-11-07 01:17:53,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 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 01:17:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4591 transitions. [2021-11-07 01:17:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:17:53,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:53,567 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2021-11-07 01:17:53,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:53,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:53,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:17:54,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:17:54,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:17:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1164854511, now seen corresponding path program 2 times [2021-11-07 01:17:54,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:17:54,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021481995] [2021-11-07 01:17:54,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:17:54,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:17:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:17:54,194 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:17:54,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:18:04,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:18:04,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:18:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:18:04,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:18:04,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-07 01:18:06,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 62 [2021-11-07 01:18:08,690 INFO L354 Elim1Store]: treesize reduction 74, result has 23.7 percent of original size [2021-11-07 01:18:08,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 102 treesize of output 103 [2021-11-07 01:18:08,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2021-11-07 01:18:19,527 WARN L207 SmtUtils]: Spent 8.25 s on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-11-07 01:18:54,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:18:54,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-07 01:18:54,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 96 [2021-11-07 01:18:54,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:18:54,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:19:24,782 INFO L354 Elim1Store]: treesize reduction 143, result has 3.4 percent of original size [2021-11-07 01:19:24,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 261 treesize of output 211 [2021-11-07 01:19:24,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:19:24,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 519 [2021-11-07 01:19:58,823 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:19:58,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 584 treesize of output 550 [2021-11-07 01:19:58,834 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:19:58,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 100 treesize of output 36 [2021-11-07 01:19:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:19:59,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:01,988 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| c_ULTIMATE.start_cx82310_rx_fixup_~skb2~0.base (let ((.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse5 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse4 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse1 (select |c_#memory_int| c_ULTIMATE.start_cx82310_rx_fixup_~skb2~0.base)) (.cse2 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse3 (bvadd v_ULTIMATE.start_skb_put_~arg1_12 (concat (concat (concat (select .cse1 .cse6) (select .cse1 .cse5)) (select .cse1 .cse4)) (select .cse1 .cse2))))) (store (store (store (store .cse1 .cse2 ((_ extract 7 0) .cse3)) .cse4 ((_ extract 15 8) .cse3)) .cse5 ((_ extract 23 16) .cse3)) .cse6 ((_ extract 31 24) .cse3))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:20:04,075 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_ldv_alloc_skb_12_#res.base| (let ((.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse5 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse4 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_ldv_alloc_skb_12_#res.base|)) (.cse2 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse3 (bvadd (concat (concat (concat (select .cse1 .cse6) (select .cse1 .cse5)) (select .cse1 .cse4)) (select .cse1 .cse2)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse1 .cse2 ((_ extract 7 0) .cse3)) .cse4 ((_ extract 15 8) .cse3)) .cse5 ((_ extract 23 16) .cse3)) .cse6 ((_ extract 31 24) .cse3))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:20:06,142 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| c_ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.base (let ((.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse5 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse4 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse1 (select |c_#memory_int| c_ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.base)) (.cse2 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse3 (bvadd (concat (concat (concat (select .cse1 .cse6) (select .cse1 .cse5)) (select .cse1 .cse4)) (select .cse1 .cse2)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse1 .cse2 ((_ extract 7 0) .cse3)) .cse4 ((_ extract 15 8) .cse3)) .cse5 ((_ extract 23 16) .cse3)) .cse6 ((_ extract 31 24) .cse3))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:20:06,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:06,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2022 [2021-11-07 01:20:06,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:06,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2681 [2021-11-07 01:20:42,493 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 8)) (ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 8)) (v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| c_ULTIMATE.start_ldv_skb_alloc_~skb~0.base (let ((.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse5 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse4 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse1 (store (store (select |c_#memory_int| c_ULTIMATE.start_ldv_skb_alloc_~skb~0.base) (bvadd (_ bv224 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_5) (bvadd (_ bv232 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_4)) (.cse2 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse3 (bvadd (concat (concat (concat (select .cse1 .cse6) (select .cse1 .cse5)) (select .cse1 .cse4)) (select .cse1 .cse2)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse1 .cse2 ((_ extract 7 0) .cse3)) .cse4 ((_ extract 15 8) .cse3)) .cse5 ((_ extract 23 16) .cse3)) .cse6 ((_ extract 31 24) .cse3))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:20:42,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:20:42,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4553 [2021-11-07 01:20:44,623 WARN L838 $PredicateComparison]: unable to prove that (forall ((~last_index~0 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 8)) (v_DerPreprocessor_5 (_ BitVec 8)) (ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 8)) (|~#set_impl~0.offset| (_ BitVec 64)) (v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_~#set_impl~0.base| (store (select |c_#memory_int| |c_~#set_impl~0.base|) (bvadd |~#set_impl~0.offset| (bvmul ((_ sign_extend 32) ~last_index~0) (_ bv8 64))) v_DerPreprocessor_6)))) (store .cse1 c_ULTIMATE.start_ldv_skb_alloc_~skb~0.base (let ((.cse7 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse5 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse2 (store (store (select .cse1 c_ULTIMATE.start_ldv_skb_alloc_~skb~0.base) (bvadd (_ bv224 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_5) (bvadd (_ bv232 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_4)) (.cse3 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse4 (bvadd (concat (concat (concat (select .cse2 .cse7) (select .cse2 .cse6)) (select .cse2 .cse5)) (select .cse2 .cse3)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse2 .cse3 ((_ extract 7 0) .cse4)) .cse5 ((_ extract 15 8) .cse4)) .cse6 ((_ extract 23 16) .cse4)) .cse7 ((_ extract 31 24) .cse4)))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:21:29,712 WARN L838 $PredicateComparison]: unable to prove that (forall ((~last_index~0 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 8)) (v_DerPreprocessor_5 (_ BitVec 8)) (ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 8)) (|~#set_impl~0.offset| (_ BitVec 64)) (v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (bvult (_ bv0 64) (let ((.cse0 (select (let ((.cse1 (store |c_#memory_int| |c_~#set_impl~0.base| (store (select |c_#memory_int| |c_~#set_impl~0.base|) (bvadd |~#set_impl~0.offset| (bvmul ((_ sign_extend 32) ~last_index~0) (_ bv8 64))) v_DerPreprocessor_6)))) (store .cse1 |c_ULTIMATE.start_ldv_zalloc_#t~malloc35.base| (let ((.cse7 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse5 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse2 (store (store (select .cse1 |c_ULTIMATE.start_ldv_zalloc_#t~malloc35.base|) (bvadd (_ bv224 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_5) (bvadd (_ bv232 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_4)) (.cse3 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse4 (bvadd (concat (concat (concat (select .cse2 .cse7) (select .cse2 .cse6)) (select .cse2 .cse5)) (select .cse2 .cse3)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse2 .cse3 ((_ extract 7 0) .cse4)) .cse5 ((_ extract 15 8) .cse4)) .cse6 ((_ extract 23 16) .cse4)) .cse7 ((_ extract 31 24) .cse4)))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64))))))) is different from false [2021-11-07 01:21:32,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((~last_index~0 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 8)) (v_DerPreprocessor_5 (_ BitVec 8)) (ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 8)) (|v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| (_ BitVec 64)) (|~#set_impl~0.offset| (_ BitVec 64)) (v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (or (= (_ bv0 64) |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91|) (bvult (_ bv0 64) (let ((.cse0 (select (let ((.cse1 (let ((.cse8 (store |c_#memory_int| |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8))))) (store .cse8 |c_~#set_impl~0.base| (store (select .cse8 |c_~#set_impl~0.base|) (bvadd |~#set_impl~0.offset| (bvmul ((_ sign_extend 32) ~last_index~0) (_ bv8 64))) v_DerPreprocessor_6))))) (store .cse1 |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| (let ((.cse7 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse6 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse5 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse2 (store (store (select .cse1 |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91|) (bvadd (_ bv224 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_5) (bvadd (_ bv232 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_4)) (.cse3 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse4 (bvadd (concat (concat (concat (select .cse2 .cse7) (select .cse2 .cse6)) (select .cse2 .cse5)) (select .cse2 .cse3)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse2 .cse3 ((_ extract 7 0) .cse4)) .cse5 ((_ extract 15 8) .cse4)) .cse6 ((_ extract 23 16) .cse4)) .cse7 ((_ extract 31 24) .cse4)))))) c_ULTIMATE.start_cx82310_rx_fixup_~dev.base))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv467 64))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv466 64)))) (select .cse0 (bvadd (_ bv465 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv464 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv463 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd (_ bv462 64) c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv461 64)))) (select .cse0 (bvadd c_ULTIMATE.start_cx82310_rx_fixup_~dev.offset (_ bv460 64)))))))) is different from false [2021-11-07 01:22:11,718 WARN L207 SmtUtils]: Spent 17.55 s on a formula simplification that was a NOOP. DAG size: 109 [2021-11-07 01:23:33,763 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35 (_ BitVec 64)) (~last_index~0 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 8)) (v_DerPreprocessor_5 (_ BitVec 8)) (ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 8)) (|v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| (_ BitVec 64)) (|~#set_impl~0.offset| (_ BitVec 64)) (v_ULTIMATE.start_skb_put_~arg1_12 (_ BitVec 32)) (v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ BitVec 64))) (let ((.cse1 (bvadd v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35 (_ bv467 64))) (.cse2 (bvadd v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35 (_ bv466 64))) (.cse3 (bvadd (_ bv465 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35)) (.cse4 (bvadd (_ bv464 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35)) (.cse5 (bvadd (_ bv463 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35)) (.cse6 (bvadd (_ bv462 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35)) (.cse7 (bvadd (_ bv461 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35)) (.cse8 (bvadd (_ bv460 64) v_ULTIMATE.start_cx82310_rx_fixup_~dev.offset_35))) (or (= (_ bv0 64) (let ((.cse0 (select |c_#memory_int| (_ bv0 64)))) (concat (concat (concat (concat (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 .cse4)) (select .cse0 .cse5)) (select .cse0 .cse6)) (select .cse0 .cse7)) (select .cse0 .cse8)))) (= (_ bv0 64) |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91|) (bvult (_ bv0 64) (let ((.cse9 (select (let ((.cse10 (let ((.cse17 (store |c_#memory_int| |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8))))) (store .cse17 |c_~#set_impl~0.base| (store (select .cse17 |c_~#set_impl~0.base|) (bvadd |~#set_impl~0.offset| (bvmul ((_ sign_extend 32) ~last_index~0) (_ bv8 64))) v_DerPreprocessor_6))))) (store .cse10 |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91| (let ((.cse16 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv219 64))) (.cse15 (bvadd v_ULTIMATE.start_skb_put_~arg0.offset_12 (_ bv218 64))) (.cse14 (bvadd (_ bv217 64) v_ULTIMATE.start_skb_put_~arg0.offset_12)) (.cse11 (store (store (select .cse10 |v_ULTIMATE.start_ldv_zalloc_#t~malloc35.base_91|) (bvadd (_ bv224 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_5) (bvadd (_ bv232 64) ULTIMATE.start_ldv_alloc_skb_12_~tmp~12.offset) v_DerPreprocessor_4)) (.cse12 (bvadd (_ bv216 64) v_ULTIMATE.start_skb_put_~arg0.offset_12))) (let ((.cse13 (bvadd (concat (concat (concat (select .cse11 .cse16) (select .cse11 .cse15)) (select .cse11 .cse14)) (select .cse11 .cse12)) v_ULTIMATE.start_skb_put_~arg1_12))) (store (store (store (store .cse11 .cse12 ((_ extract 7 0) .cse13)) .cse14 ((_ extract 15 8) .cse13)) .cse15 ((_ extract 23 16) .cse13)) .cse16 ((_ extract 31 24) .cse13)))))) (_ bv0 64)))) (concat (concat (concat (concat (concat (concat (concat (select .cse9 .cse1) (select .cse9 .cse2)) (select .cse9 .cse3)) (select .cse9 .cse4)) (select .cse9 .cse5)) (select .cse9 .cse6)) (select .cse9 .cse7)) (select .cse9 .cse8))))))) is different from false [2021-11-07 01:24:06,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:06,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021481995] [2021-11-07 01:24:06,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Index 1 out of bounds for length 1 [2021-11-07 01:24:06,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970835021] [2021-11-07 01:24:06,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:24:06,471 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:06,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:06,480 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:06,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:24:12,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:24:12,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:24:12,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 01:24:12,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@42aa8753 [2021-11-07 01:24:12,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170490824] [2021-11-07 01:24:12,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:24:12,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:24:12,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:24:12,799 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:24:12,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bdea581-e95d-4afe-b5f2-410939ea2e39/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process