./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:04:40,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:04:40,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:04:40,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:04:40,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:04:40,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:04:40,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:04:40,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:04:40,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:04:40,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:04:40,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:04:40,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:04:40,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:04:40,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:04:40,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:04:40,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:04:40,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:04:40,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:04:40,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:04:40,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:04:40,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:04:40,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:04:40,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:04:40,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:04:40,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:04:40,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:04:40,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:04:40,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:04:40,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:04:40,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:04:40,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:04:40,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:04:40,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:04:40,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:04:40,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:04:40,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:04:40,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:04:40,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:04:40,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:04:40,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:04:40,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:04:40,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:04:40,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:04:40,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:04:40,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:04:40,461 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:04:40,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:04:40,462 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:04:40,462 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:04:40,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:04:40,469 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:04:40,469 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:04:40,470 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:04:40,471 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:04:40,471 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:04:40,471 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:04:40,471 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:04:40,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:04:40,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:04:40,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:04:40,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:04:40,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:04:40,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:04:40,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:04:40,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:04:40,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:04:40,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:04:40,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:04:40,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:04:40,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:40,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:04:40,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:04:40,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:04:40,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:04:40,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:04:40,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:04:40,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:04:40,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:04:40,478 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_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 [2021-11-07 02:04:40,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:04:40,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:04:40,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:04:40,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:04:40,798 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:04:40,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-07 02:04:40,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/73480b2ee/6d82826177a24d61ac4ff35fffa8d749/FLAGffe3bfa0e [2021-11-07 02:04:41,983 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:04:41,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-07 02:04:42,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/73480b2ee/6d82826177a24d61ac4ff35fffa8d749/FLAGffe3bfa0e [2021-11-07 02:04:42,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/73480b2ee/6d82826177a24d61ac4ff35fffa8d749 [2021-11-07 02:04:42,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:04:42,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:04:42,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:42,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:04:42,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:04:42,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa8ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:42, skipping insertion in model container [2021-11-07 02:04:42,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:42" (1/1) ... [2021-11-07 02:04:42,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:04:42,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:45,150 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:45,169 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:45,203 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:45,204 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:45,612 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:04:47,609 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-07 02:04:47,612 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-07 02:04:47,614 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-07 02:04:47,614 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-07 02:04:47,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:47,725 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:04:47,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@414b86ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:47, skipping insertion in model container [2021-11-07 02:04:47,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:47,726 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:04:47,729 INFO L168 Benchmark]: Toolchain (without parser) took 5457.13 ms. Allocated memory was 86.0 MB in the beginning and 142.6 MB in the end (delta: 56.6 MB). Free memory was 48.0 MB in the beginning and 69.4 MB in the end (delta: -21.4 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:47,730 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 86.0 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:04:47,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 5454.47 ms. Allocated memory was 86.0 MB in the beginning and 142.6 MB in the end (delta: 56.6 MB). Free memory was 47.7 MB in the beginning and 69.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:04:47,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 86.0 MB. Free memory was 66.5 MB in the beginning and 66.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 5454.47 ms. Allocated memory was 86.0 MB in the beginning and 142.6 MB in the end (delta: 56.6 MB). Free memory was 47.7 MB in the beginning and 69.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6896]: 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_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:04:50,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:04:50,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:04:50,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:04:50,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:04:50,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:04:50,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:04:50,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:04:50,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:04:50,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:04:50,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:04:50,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:04:50,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:04:50,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:04:50,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:04:50,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:04:50,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:04:50,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:04:50,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:04:50,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:04:50,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:04:50,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:04:50,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:04:50,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:04:50,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:04:50,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:04:50,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:04:50,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:04:50,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:04:50,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:04:50,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:04:50,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:04:50,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:04:50,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:04:50,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:04:50,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:04:50,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:04:50,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:04:50,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:04:50,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:04:50,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:04:50,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:04:50,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:04:50,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:04:50,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:04:50,281 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:04:50,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:04:50,281 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:04:50,281 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:04:50,282 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:04:50,282 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:04:50,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:04:50,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:04:50,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:04:50,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:04:50,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:04:50,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:04:50,284 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:04:50,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:04:50,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:04:50,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:04:50,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:04:50,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:04:50,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:04:50,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:04:50,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:04:50,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:04:50,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:04:50,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:04:50,286 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:04:50,287 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:04:50,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:04:50,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:04:50,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:04:50,287 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_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6757464a5622bb83d03b39d9677b81f434099fef913b81074103632b3c898f25 [2021-11-07 02:04:50,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:04:50,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:04:50,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:04:50,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:04:50,726 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:04:50,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-07 02:04:50,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/12f9c596a/ee1f521446fe45e7965f7dd82fb23427/FLAGadd25f969 [2021-11-07 02:04:52,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:04:52,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-07 02:04:52,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/12f9c596a/ee1f521446fe45e7965f7dd82fb23427/FLAGadd25f969 [2021-11-07 02:04:52,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/data/12f9c596a/ee1f521446fe45e7965f7dd82fb23427 [2021-11-07 02:04:52,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:04:52,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:04:52,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:52,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:04:52,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:04:52,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:52" (1/1) ... [2021-11-07 02:04:52,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104b4bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:52, skipping insertion in model container [2021-11-07 02:04:52,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:04:52" (1/1) ... [2021-11-07 02:04:52,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:04:52,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:57,797 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-07 02:04:57,801 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-07 02:04:57,802 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-07 02:04:57,803 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-07 02:04:57,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:57,926 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:04:58,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:04:58,652 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-07 02:04:58,653 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-07 02:04:58,653 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-07 02:04:58,654 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-07 02:04:58,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:58,742 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:04:59,376 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463113,463126] [2021-11-07 02:04:59,377 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463282,463295] [2021-11-07 02:04:59,378 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463449,463462] [2021-11-07 02:04:59,378 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_017b7e2d-3481-4c79-8013-98b30263e5c2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[463617,463630] [2021-11-07 02:04:59,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:04:59,821 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:04:59,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59 WrapperNode [2021-11-07 02:04:59,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:04:59,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:04:59,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:04:59,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:04:59,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:00,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:01,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:05:01,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:05:01,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:05:01,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:05:01,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:01,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:01,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:01,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:02,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:02,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:02,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:03,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:05:03,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:05:03,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:05:03,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:05:03,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (1/1) ... [2021-11-07 02:05:03,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:05:03,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:05:03,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:05:03,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:05:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:05:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:05:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:05:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:05:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:05:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:05:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:05:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:05:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:05:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:05:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:05:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:05:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:05:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:05:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:05:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:05:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:05:03,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:05:03,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:05:03,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:05:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:05:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:05:03,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:05:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:05:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:05:03,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:08:48,012 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-07 02:08:48,012 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-07 02:08:48,013 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-07 02:08:48,015 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-07 02:08:48,016 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 02:08:48,017 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 02:08:48,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:48,074 INFO L299 CfgBuilder]: Removed 8190 assume(true) statements. [2021-11-07 02:08:48,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:48 BoogieIcfgContainer [2021-11-07 02:08:48,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:48,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:48,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:48,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:04:52" (1/3) ... [2021-11-07 02:08:48,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:48, skipping insertion in model container [2021-11-07 02:08:48,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:04:59" (2/3) ... [2021-11-07 02:08:48,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:48, skipping insertion in model container [2021-11-07 02:08:48,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:48" (3/3) ... [2021-11-07 02:08:48,092 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-07 02:08:48,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:48,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2021-11-07 02:08:48,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:48,198 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:08:48,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2021-11-07 02:08:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 7809 states, 7745 states have (on average 1.3404777275661717) internal successors, (10382), 7808 states have internal predecessors, (10382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:08:48,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:48,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:48,448 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:08:48,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1237294292, now seen corresponding path program 1 times [2021-11-07 02:08:48,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:48,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655500915] [2021-11-07 02:08:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:48,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:48,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:48,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:54,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:54,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:55,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:55,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655500915] [2021-11-07 02:08:55,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655500915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:55,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:55,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:55,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139321584] [2021-11-07 02:08:55,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:55,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:55,254 INFO L87 Difference]: Start difference. First operand has 7809 states, 7745 states have (on average 1.3404777275661717) internal successors, (10382), 7808 states have internal predecessors, (10382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 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) [2021-11-07 02:08:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:59,410 INFO L93 Difference]: Finished difference Result 26067 states and 34622 transitions. [2021-11-07 02:08:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:59,412 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 59 [2021-11-07 02:08:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:59,569 INFO L225 Difference]: With dead ends: 26067 [2021-11-07 02:08:59,569 INFO L226 Difference]: Without dead ends: 18034 [2021-11-07 02:08:59,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18034 states. [2021-11-07 02:09:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18034 to 16914. [2021-11-07 02:09:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16914 states, 16850 states have (on average 1.3153115727002966) internal successors, (22163), 16913 states have internal predecessors, (22163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16914 states to 16914 states and 22163 transitions. [2021-11-07 02:09:00,669 INFO L78 Accepts]: Start accepts. Automaton has 16914 states and 22163 transitions. Word has length 59 [2021-11-07 02:09:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 16914 states and 22163 transitions. [2021-11-07 02:09:00,672 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) [2021-11-07 02:09:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 16914 states and 22163 transitions. [2021-11-07 02:09:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:09:00,675 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:00,680 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:00,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:00,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:00,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:09:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1476927092, now seen corresponding path program 1 times [2021-11-07 02:09:00,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:00,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099636543] [2021-11-07 02:09:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:00,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:00,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:00,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:09:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:06,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:07,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:07,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:07,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099636543] [2021-11-07 02:09:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099636543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:07,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:07,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722909221] [2021-11-07 02:09:07,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:07,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:07,566 INFO L87 Difference]: Start difference. First operand 16914 states and 22163 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:12,440 INFO L93 Difference]: Finished difference Result 66662 states and 87586 transitions. [2021-11-07 02:09:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:09:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:12,746 INFO L225 Difference]: With dead ends: 66662 [2021-11-07 02:09:12,746 INFO L226 Difference]: Without dead ends: 49864 [2021-11-07 02:09:12,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49864 states. [2021-11-07 02:09:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49864 to 49800. [2021-11-07 02:09:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49800 states, 49736 states have (on average 1.3168931960752774) internal successors, (65497), 49799 states have internal predecessors, (65497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49800 states to 49800 states and 65497 transitions. [2021-11-07 02:09:14,943 INFO L78 Accepts]: Start accepts. Automaton has 49800 states and 65497 transitions. Word has length 60 [2021-11-07 02:09:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:14,943 INFO L470 AbstractCegarLoop]: Abstraction has 49800 states and 65497 transitions. [2021-11-07 02:09:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 49800 states and 65497 transitions. [2021-11-07 02:09:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 02:09:14,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:14,950 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:15,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:15,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:15,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:09:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2090903688, now seen corresponding path program 1 times [2021-11-07 02:09:15,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:15,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180644479] [2021-11-07 02:09:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:15,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:15,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:09:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:20,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:20,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:21,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:21,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:21,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180644479] [2021-11-07 02:09:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180644479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:21,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:21,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:21,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830744198] [2021-11-07 02:09:21,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:21,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:21,584 INFO L87 Difference]: Start difference. First operand 49800 states and 65497 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:28,585 INFO L93 Difference]: Finished difference Result 193595 states and 254828 transitions. [2021-11-07 02:09:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 62 [2021-11-07 02:09:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:29,062 INFO L225 Difference]: With dead ends: 193595 [2021-11-07 02:09:29,062 INFO L226 Difference]: Without dead ends: 143911 [2021-11-07 02:09:29,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143911 states. [2021-11-07 02:09:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143911 to 141429. [2021-11-07 02:09:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141429 states, 141365 states have (on average 1.3198457892689137) internal successors, (186580), 141428 states have internal predecessors, (186580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141429 states to 141429 states and 186580 transitions. [2021-11-07 02:09:35,245 INFO L78 Accepts]: Start accepts. Automaton has 141429 states and 186580 transitions. Word has length 62 [2021-11-07 02:09:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:35,245 INFO L470 AbstractCegarLoop]: Abstraction has 141429 states and 186580 transitions. [2021-11-07 02:09:35,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 141429 states and 186580 transitions. [2021-11-07 02:09:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 02:09:35,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:35,250 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:35,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:35,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:35,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 61 more)] === [2021-11-07 02:09:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1136047947, now seen corresponding path program 1 times [2021-11-07 02:09:35,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:35,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854183640] [2021-11-07 02:09:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:35,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:35,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:35,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b7e2d-3481-4c79-8013-98b30263e5c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:09:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:41,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:41,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:42,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:42,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854183640] [2021-11-07 02:09:42,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854183640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:42,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:42,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:09:42,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569317862] [2021-11-07 02:09:42,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:42,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:42,199 INFO L87 Difference]: Start difference. First operand 141429 states and 186580 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:52,730 INFO L93 Difference]: Finished difference Result 350714 states and 462556 transitions. [2021-11-07 02:09:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 02:09:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:53,442 INFO L225 Difference]: With dead ends: 350714 [2021-11-07 02:09:53,443 INFO L226 Difference]: Without dead ends: 209401 [2021-11-07 02:09:53,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:09:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209401 states.