./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--can--can-dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/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--can--can-dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH --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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:07:11,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:07:11,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:07:11,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:07:11,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:07:11,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:07:11,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:07:11,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:07:11,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:07:11,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:07:11,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:07:11,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:07:11,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:07:11,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:07:11,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:07:11,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:07:11,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:07:11,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:07:11,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:07:11,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:07:11,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:07:11,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:07:11,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:07:11,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:07:11,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:07:11,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:07:11,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:07:11,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:07:11,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:07:11,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:07:11,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:07:11,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:07:11,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:07:11,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:07:11,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:07:11,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:07:11,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:07:11,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:07:11,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:07:11,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:07:11,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:07:11,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:07:11,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:07:11,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:07:11,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:07:11,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:07:11,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:07:11,427 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:07:11,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:07:11,428 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:07:11,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:07:11,428 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:07:11,429 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:07:11,429 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:07:11,429 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:07:11,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:07:11,430 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:07:11,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:07:11,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:07:11,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:07:11,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:07:11,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:07:11,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:07:11,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:07:11,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:07:11,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:07:11,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:07:11,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:07:11,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:07:11,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:11,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:07:11,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:07:11,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:07:11,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:07:11,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:07:11,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:07:11,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:07:11,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:07:11,445 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_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-03 04:07:11,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:07:11,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:07:11,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:07:11,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:07:11,867 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:07:11,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-03 04:07:12,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/4710b36e1/cfe2378316304548a825852974c3c0ee/FLAGbcb5074c0 [2021-11-03 04:07:13,005 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:07:13,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-03 04:07:13,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/4710b36e1/cfe2378316304548a825852974c3c0ee/FLAGbcb5074c0 [2021-11-03 04:07:13,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/4710b36e1/cfe2378316304548a825852974c3c0ee [2021-11-03 04:07:13,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:07:13,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:07:13,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:13,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:07:13,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:07:13,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:13" (1/1) ... [2021-11-03 04:07:13,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2acbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:13, skipping insertion in model container [2021-11-03 04:07:13,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:13" (1/1) ... [2021-11-03 04:07:13,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:07:13,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:14,604 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_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-03 04:07:15,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 04:07:15,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:15,583 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) [2021-11-03 04:07:15,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@633416d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:15, skipping insertion in model container [2021-11-03 04:07:15,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:15,585 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:07:15,589 INFO L168 Benchmark]: Toolchain (without parser) took 2182.20 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 33.5 MB in the end (delta: 41.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:15,590 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 83.9 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:15,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2176.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 33.5 MB in the end (delta: 41.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:15,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 83.9 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2176.30 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 33.5 MB in the end (delta: 41.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5924]: 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_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/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--can--can-dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH --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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:07:18,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:07:18,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:07:18,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:07:18,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:07:18,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:07:18,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:07:18,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:07:18,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:07:18,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:07:18,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:07:18,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:07:18,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:07:18,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:07:18,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:07:18,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:07:18,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:07:18,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:07:18,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:07:18,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:07:18,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:07:18,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:07:18,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:07:18,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:07:18,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:07:18,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:07:18,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:07:18,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:07:18,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:07:18,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:07:18,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:07:18,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:07:18,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:07:18,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:07:18,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:07:18,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:07:18,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:07:18,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:07:18,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:07:18,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:07:18,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:07:18,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:07:18,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:07:18,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:07:18,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:07:18,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:07:18,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:07:18,725 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:07:18,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:07:18,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:07:18,726 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:07:18,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:07:18,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:07:18,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:07:18,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:07:18,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:07:18,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:07:18,729 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:07:18,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:07:18,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:07:18,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:07:18,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:07:18,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:07:18,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:07:18,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:07:18,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:18,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:07:18,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:07:18,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:07:18,733 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:07:18,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:07:18,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:07:18,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:07:18,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:07:18,735 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_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-03 04:07:19,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:07:19,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:07:19,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:07:19,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:07:19,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:07:19,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-03 04:07:19,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/2270156c2/1a907712e5614a52a900c79855f60231/FLAG7258f132a [2021-11-03 04:07:20,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:07:20,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-03 04:07:20,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/2270156c2/1a907712e5614a52a900c79855f60231/FLAG7258f132a [2021-11-03 04:07:20,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/data/2270156c2/1a907712e5614a52a900c79855f60231 [2021-11-03 04:07:20,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:07:20,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:07:20,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:20,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:07:20,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:07:20,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:20" (1/1) ... [2021-11-03 04:07:20,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf8cecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:20, skipping insertion in model container [2021-11-03 04:07:20,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:20" (1/1) ... [2021-11-03 04:07:20,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:07:21,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:22,294 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_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-03 04:07:23,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:23,316 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:07:23,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:23,651 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_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-03 04:07:23,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:24,025 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:07:24,253 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_0baa43b3-0543-4885-8786-816c32ad05e4/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-03 04:07:24,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:24,622 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:07:24,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24 WrapperNode [2021-11-03 04:07:24,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:24,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:24,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:07:24,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:07:24,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:24,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:25,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:07:25,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:07:25,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:07:25,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:25,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:26,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:07:26,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:07:26,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:07:26,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:07:26,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (1/1) ... [2021-11-03 04:07:26,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:26,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:07:26,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:07:26,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:07:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 04:07:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:07:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 04:07:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 04:07:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 04:07:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:07:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:07:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 04:07:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 04:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 04:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:07:26,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 04:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 04:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 04:07:26,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 04:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 04:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 04:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:07:26,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-03 04:07:26,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-03 04:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 04:07:26,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 04:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 04:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2021-11-03 04:07:26,126 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2021-11-03 04:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 04:07:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:07:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:09:46,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:09:46,418 INFO L299 CfgBuilder]: Removed 1023 assume(true) statements. [2021-11-03 04:09:46,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:46 BoogieIcfgContainer [2021-11-03 04:09:46,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:09:46,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:09:46,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:09:46,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:09:46,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:20" (1/3) ... [2021-11-03 04:09:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50328d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:46, skipping insertion in model container [2021-11-03 04:09:46,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:24" (2/3) ... [2021-11-03 04:09:46,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50328d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:46, skipping insertion in model container [2021-11-03 04:09:46,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:46" (3/3) ... [2021-11-03 04:09:46,436 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-03 04:09:46,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:09:46,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:09:46,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:09:46,532 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 [2021-11-03 04:09:46,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:09:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 1522 states, 1512 states have (on average 1.5165343915343916) internal successors, (2293), 1513 states have internal predecessors, (2293), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-03 04:09:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:09:46,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:46,702 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] [2021-11-03 04:09:46,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:09:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1434506225, now seen corresponding path program 1 times [2021-11-03 04:09:46,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:46,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684837614] [2021-11-03 04:09:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:46,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:46,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:46,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:09:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:48,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:09:48,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:49,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:49,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:49,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684837614] [2021-11-03 04:09:49,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684837614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:49,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:49,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:09:49,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800494035] [2021-11-03 04:09:49,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:09:49,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:09:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:09:49,353 INFO L87 Difference]: Start difference. First operand has 1522 states, 1512 states have (on average 1.5165343915343916) internal successors, (2293), 1513 states have internal predecessors, (2293), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-03 04:09:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:52,096 INFO L93 Difference]: Finished difference Result 5976 states and 9077 transitions. [2021-11-03 04:09:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:09:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 20 [2021-11-03 04:09:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:52,161 INFO L225 Difference]: With dead ends: 5976 [2021-11-03 04:09:52,162 INFO L226 Difference]: Without dead ends: 4425 [2021-11-03 04:09:52,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:09:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2021-11-03 04:09:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4425. [2021-11-03 04:09:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 4400 states have (on average 1.476590909090909) internal successors, (6497), 4400 states have internal predecessors, (6497), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-03 04:09:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 6533 transitions. [2021-11-03 04:09:52,522 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 6533 transitions. Word has length 20 [2021-11-03 04:09:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:52,524 INFO L470 AbstractCegarLoop]: Abstraction has 4425 states and 6533 transitions. [2021-11-03 04:09:52,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-03 04:09:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 6533 transitions. [2021-11-03 04:09:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:09:52,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:52,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:52,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:09:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:52,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:09:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -96184408, now seen corresponding path program 1 times [2021-11-03 04:09:52,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:52,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806832323] [2021-11-03 04:09:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:52,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:52,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:52,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:09:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:54,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:09:54,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:55,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:55,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:55,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806832323] [2021-11-03 04:09:55,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806832323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:55,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:55,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:09:55,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376137639] [2021-11-03 04:09:55,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:09:55,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:09:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:09:55,328 INFO L87 Difference]: Start difference. First operand 4425 states and 6533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:09:56,271 INFO L93 Difference]: Finished difference Result 11693 states and 17276 transitions. [2021-11-03 04:09:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:09:56,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-03 04:09:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:09:56,329 INFO L225 Difference]: With dead ends: 11693 [2021-11-03 04:09:56,329 INFO L226 Difference]: Without dead ends: 7277 [2021-11-03 04:09:56,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:09:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2021-11-03 04:09:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 4428. [2021-11-03 04:09:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4403 states have (on average 1.4760390642743584) internal successors, (6499), 4403 states have internal predecessors, (6499), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-03 04:09:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 6535 transitions. [2021-11-03 04:09:56,666 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 6535 transitions. Word has length 26 [2021-11-03 04:09:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:09:56,666 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 6535 transitions. [2021-11-03 04:09:56,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:09:56,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 6535 transitions. [2021-11-03 04:09:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:09:56,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:09:56,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:09:56,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:09:56,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:09:56,887 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:09:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:09:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 583873962, now seen corresponding path program 1 times [2021-11-03 04:09:56,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:09:56,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414557194] [2021-11-03 04:09:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:09:56,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:09:56,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:09:56,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:09:56,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:09:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:09:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:09:58,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:59,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:59,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:09:59,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414557194] [2021-11-03 04:09:59,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414557194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:09:59,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:09:59,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 04:09:59,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545645686] [2021-11-03 04:09:59,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:09:59,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:09:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:09:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:09:59,548 INFO L87 Difference]: Start difference. First operand 4428 states and 6535 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:02,086 INFO L93 Difference]: Finished difference Result 13264 states and 19584 transitions. [2021-11-03 04:10:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:02,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-03 04:10:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:02,153 INFO L225 Difference]: With dead ends: 13264 [2021-11-03 04:10:02,153 INFO L226 Difference]: Without dead ends: 8839 [2021-11-03 04:10:02,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:10:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2021-11-03 04:10:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8719. [2021-11-03 04:10:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8719 states, 8670 states have (on average 1.4779700115340253) internal successors, (12814), 8670 states have internal predecessors, (12814), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-03 04:10:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8719 states to 8719 states and 12886 transitions. [2021-11-03 04:10:02,688 INFO L78 Accepts]: Start accepts. Automaton has 8719 states and 12886 transitions. Word has length 26 [2021-11-03 04:10:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:02,688 INFO L470 AbstractCegarLoop]: Abstraction has 8719 states and 12886 transitions. [2021-11-03 04:10:02,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:10:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8719 states and 12886 transitions. [2021-11-03 04:10:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 04:10:02,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:02,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:02,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:02,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:02,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash 52819245, now seen corresponding path program 1 times [2021-11-03 04:10:02,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:02,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406839683] [2021-11-03 04:10:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:02,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:02,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:02,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:02,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:10:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:10:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:05,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:06,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:06,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406839683] [2021-11-03 04:10:06,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406839683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:06,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:06,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:10:06,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569917771] [2021-11-03 04:10:06,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:06,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:06,294 INFO L87 Difference]: Start difference. First operand 8719 states and 12886 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-03 04:10:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:08,715 INFO L93 Difference]: Finished difference Result 33811 states and 50020 transitions. [2021-11-03 04:10:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:10:08,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 [2021-11-03 04:10:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:08,869 INFO L225 Difference]: With dead ends: 33811 [2021-11-03 04:10:08,869 INFO L226 Difference]: Without dead ends: 25101 [2021-11-03 04:10:08,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2021-11-03 04:10:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 25085. [2021-11-03 04:10:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25085 states, 24940 states have (on average 1.4774659182036889) internal successors, (36848), 24940 states have internal predecessors, (36848), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-03 04:10:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25085 states to 25085 states and 37064 transitions. [2021-11-03 04:10:10,395 INFO L78 Accepts]: Start accepts. Automaton has 25085 states and 37064 transitions. Word has length 68 [2021-11-03 04:10:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:10,396 INFO L470 AbstractCegarLoop]: Abstraction has 25085 states and 37064 transitions. [2021-11-03 04:10:10,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-03 04:10:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 25085 states and 37064 transitions. [2021-11-03 04:10:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:10:10,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:10,421 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:10:10,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:10,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:10,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:10,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1808415354, now seen corresponding path program 1 times [2021-11-03 04:10:10,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:10,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450831719] [2021-11-03 04:10:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:10,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:10,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:10,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:10:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:13,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:10:13,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:13,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:13,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:13,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450831719] [2021-11-03 04:10:13,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450831719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:13,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:13,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:10:13,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614729144] [2021-11-03 04:10:13,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:10:13,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:10:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:10:13,873 INFO L87 Difference]: Start difference. First operand 25085 states and 37064 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-03 04:10:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:18,002 INFO L93 Difference]: Finished difference Result 116152 states and 172779 transitions. [2021-11-03 04:10:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:10:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-03 04:10:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:18,374 INFO L225 Difference]: With dead ends: 116152 [2021-11-03 04:10:18,374 INFO L226 Difference]: Without dead ends: 91076 [2021-11-03 04:10:18,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:10:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91076 states. [2021-11-03 04:10:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91076 to 25241. [2021-11-03 04:10:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25241 states, 25096 states have (on average 1.4744979279566466) internal successors, (37004), 25096 states have internal predecessors, (37004), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-03 04:10:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25241 states to 25241 states and 37220 transitions. [2021-11-03 04:10:21,662 INFO L78 Accepts]: Start accepts. Automaton has 25241 states and 37220 transitions. Word has length 69 [2021-11-03 04:10:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:10:21,665 INFO L470 AbstractCegarLoop]: Abstraction has 25241 states and 37220 transitions. [2021-11-03 04:10:21,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-03 04:10:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 25241 states and 37220 transitions. [2021-11-03 04:10:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 04:10:21,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:10:21,692 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:10:21,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:10:21,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:10:21,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:10:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:10:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1774398041, now seen corresponding path program 1 times [2021-11-03 04:10:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:10:21,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445762515] [2021-11-03 04:10:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:10:21,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:10:21,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:10:21,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:10:21,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:10:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:10:24,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 04:10:24,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:10:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:25,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:10:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:10:26,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:10:26,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445762515] [2021-11-03 04:10:26,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445762515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:10:26,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:10:26,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2021-11-03 04:10:26,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465298338] [2021-11-03 04:10:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:10:26,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:10:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:10:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:10:26,289 INFO L87 Difference]: Start difference. First operand 25241 states and 37220 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2021-11-03 04:10:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:10:57,600 INFO L93 Difference]: Finished difference Result 155318 states and 231953 transitions. [2021-11-03 04:10:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 04:10:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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 72 [2021-11-03 04:10:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:10:58,276 INFO L225 Difference]: With dead ends: 155318 [2021-11-03 04:10:58,276 INFO L226 Difference]: Without dead ends: 130086 [2021-11-03 04:10:58,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-11-03 04:10:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130086 states. [2021-11-03 04:11:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130086 to 25553. [2021-11-03 04:11:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25553 states, 25408 states have (on average 1.4656013853904282) internal successors, (37238), 25408 states have internal predecessors, (37238), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-03 04:11:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25553 states to 25553 states and 37454 transitions. [2021-11-03 04:11:02,784 INFO L78 Accepts]: Start accepts. Automaton has 25553 states and 37454 transitions. Word has length 72 [2021-11-03 04:11:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:02,785 INFO L470 AbstractCegarLoop]: Abstraction has 25553 states and 37454 transitions. [2021-11-03 04:11:02,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2021-11-03 04:11:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 25553 states and 37454 transitions. [2021-11-03 04:11:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:11:02,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:02,814 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:11:02,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:03,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:03,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1134624173, now seen corresponding path program 1 times [2021-11-03 04:11:03,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:03,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310375884] [2021-11-03 04:11:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:03,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:03,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:03,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:11:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:06,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:11:06,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:06,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:07,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:07,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310375884] [2021-11-03 04:11:07,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310375884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:07,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:07,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:11:07,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260057844] [2021-11-03 04:11:07,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:11:07,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:07,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:11:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:11:07,264 INFO L87 Difference]: Start difference. First operand 25553 states and 37454 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:14,871 INFO L93 Difference]: Finished difference Result 92321 states and 137171 transitions. [2021-11-03 04:11:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:11:14,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 04:11:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:15,066 INFO L225 Difference]: With dead ends: 92321 [2021-11-03 04:11:15,066 INFO L226 Difference]: Without dead ends: 66777 [2021-11-03 04:11:15,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:11:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66777 states. [2021-11-03 04:11:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66777 to 25709. [2021-11-03 04:11:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25564 states have (on average 1.4627601314348302) internal successors, (37394), 25564 states have internal predecessors, (37394), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-03 04:11:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 37610 transitions. [2021-11-03 04:11:18,674 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 37610 transitions. Word has length 74 [2021-11-03 04:11:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 25709 states and 37610 transitions. [2021-11-03 04:11:18,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 37610 transitions. [2021-11-03 04:11:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:11:18,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:18,706 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-03 04:11:18,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:18,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:18,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2032017451, now seen corresponding path program 1 times [2021-11-03 04:11:18,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:18,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70235042] [2021-11-03 04:11:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:18,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:18,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:18,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:18,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:11:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:22,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:11:22,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:22,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:23,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:23,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70235042] [2021-11-03 04:11:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70235042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:23,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:23,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:11:23,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256057054] [2021-11-03 04:11:23,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:11:23,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:11:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:11:23,056 INFO L87 Difference]: Start difference. First operand 25709 states and 37610 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2021-11-03 04:11:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:34,363 INFO L93 Difference]: Finished difference Result 107483 states and 157313 transitions. [2021-11-03 04:11:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:11:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 74 [2021-11-03 04:11:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:34,572 INFO L225 Difference]: With dead ends: 107483 [2021-11-03 04:11:34,572 INFO L226 Difference]: Without dead ends: 81783 [2021-11-03 04:11:34,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:11:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81783 states. [2021-11-03 04:11:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81783 to 25943. [2021-11-03 04:11:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25943 states, 25798 states have (on average 1.4585626792774633) internal successors, (37628), 25798 states have internal predecessors, (37628), 108 states have call successors, (108), 36 states have call predecessors, (108), 36 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-03 04:11:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25943 states to 25943 states and 37844 transitions. [2021-11-03 04:11:39,236 INFO L78 Accepts]: Start accepts. Automaton has 25943 states and 37844 transitions. Word has length 74 [2021-11-03 04:11:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:11:39,236 INFO L470 AbstractCegarLoop]: Abstraction has 25943 states and 37844 transitions. [2021-11-03 04:11:39,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2021-11-03 04:11:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 25943 states and 37844 transitions. [2021-11-03 04:11:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:11:39,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:11:39,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:11:39,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:11:39,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:11:39,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:11:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:11:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash -528873256, now seen corresponding path program 1 times [2021-11-03 04:11:39,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:11:39,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038397312] [2021-11-03 04:11:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:11:39,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:11:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:11:39,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:11:39,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0baa43b3-0543-4885-8786-816c32ad05e4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:11:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:11:42,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:11:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:11:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:11:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:43,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:43,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038397312] [2021-11-03 04:11:43,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038397312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:43,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:43,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:11:43,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72227584] [2021-11-03 04:11:43,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:11:43,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:43,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:11:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:43,237 INFO L87 Difference]: Start difference. First operand 25943 states and 37844 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:11:49,866 INFO L93 Difference]: Finished difference Result 62958 states and 92038 transitions. [2021-11-03 04:11:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:11:49,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 04:11:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:11:49,959 INFO L225 Difference]: With dead ends: 62958 [2021-11-03 04:11:49,960 INFO L226 Difference]: Without dead ends: 49831 [2021-11-03 04:11:49,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:11:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49831 states.