./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.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_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/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_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/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_8feac4b6-d09f-49cc-b512-a23df579cf2c/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 c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:51,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:51,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:51,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:51,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:51,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:51,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:51,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:51,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:51,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:51,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:51,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:51,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:51,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:51,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:51,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:51,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:51,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:51,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:51,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:51,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:51,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:51,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:51,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:51,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:51,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:51,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:51,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:51,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:51,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:51,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:51,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:51,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:51,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:51,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:51,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:51,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:51,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:51,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:51,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:51,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:51,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:16:51,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:51,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:51,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:51,386 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:51,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:51,386 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:51,387 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:16:51,387 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:51,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:51,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:16:51,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:16:51,388 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:51,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:16:51,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:16:51,388 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:16:51,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:51,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:16:51,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:51,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:51,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:51,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:51,390 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:51,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:51,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:51,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:51,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:51,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:51,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:51,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:51,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:51,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:51,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:16:51,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:16:51,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:51,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:51,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:51,394 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-07 02:16:51,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:51,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:51,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:51,666 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:51,667 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:51,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-07 02:16:51,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/555059515/3ca6bef8059a49b9a6c4c4ea915a7142/FLAGb6f901b62 [2021-11-07 02:16:52,728 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:52,729 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-07 02:16:52,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/555059515/3ca6bef8059a49b9a6c4c4ea915a7142/FLAGb6f901b62 [2021-11-07 02:16:53,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/555059515/3ca6bef8059a49b9a6c4c4ea915a7142 [2021-11-07 02:16:53,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:53,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:53,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:53,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:53,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:53,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:53" (1/1) ... [2021-11-07 02:16:53,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b8127f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:53, skipping insertion in model container [2021-11-07 02:16:53,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:53" (1/1) ... [2021-11-07 02:16:53,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:53,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:56,759 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-07 02:16:56,762 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-07 02:16:56,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:56,870 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 02:16:56,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@acc8519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:56, skipping insertion in model container [2021-11-07 02:16:56,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:56,871 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:16:56,873 INFO L168 Benchmark]: Toolchain (without parser) took 3750.68 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 73.1 MB in the beginning and 98.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:56,874 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:56,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3746.22 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 72.8 MB in the beginning and 98.6 MB in the end (delta: -25.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:56,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3746.22 ms. Allocated memory was 119.5 MB in the beginning and 155.2 MB in the end (delta: 35.7 MB). Free memory was 72.8 MB in the beginning and 98.6 MB in the end (delta: -25.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7197]: 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/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_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/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_8feac4b6-d09f-49cc-b512-a23df579cf2c/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 c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:59,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:59,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:59,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:59,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:59,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:59,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:59,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:59,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:59,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:59,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:59,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:59,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:59,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:59,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:59,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:59,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:59,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:59,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:59,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:59,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:59,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:59,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:59,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:59,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:59,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:59,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:59,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:59,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:59,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:59,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:59,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:59,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:59,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:59,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:59,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:59,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:59,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:59,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:59,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:59,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:59,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:16:59,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:59,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:59,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:59,414 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:59,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:59,415 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:59,415 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:59,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:59,415 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:59,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:59,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:59,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:59,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:59,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:59,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:59,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:16:59,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:16:59,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:59,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:59,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:59,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:59,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:16:59,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:59,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:59,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:59,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:59,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:59,423 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:16:59,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:59,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:59,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:59,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:59,424 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c26285c798d9eae93470e6619d316c691c81cc1a0579ebf111c5d2cbbd8c7126 [2021-11-07 02:16:59,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:59,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:59,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:59,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:59,848 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:59,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-07 02:16:59,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/d6d773fd3/409502feb1f44b5a9b71e53a2717fc11/FLAG4994478ee [2021-11-07 02:17:00,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:17:00,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-07 02:17:01,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/d6d773fd3/409502feb1f44b5a9b71e53a2717fc11/FLAG4994478ee [2021-11-07 02:17:01,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/data/d6d773fd3/409502feb1f44b5a9b71e53a2717fc11 [2021-11-07 02:17:01,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:17:01,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:17:01,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:01,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:17:01,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:17:01,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:01" (1/1) ... [2021-11-07 02:17:01,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba1089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:01, skipping insertion in model container [2021-11-07 02:17:01,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:17:01" (1/1) ... [2021-11-07 02:17:01,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:17:01,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:05,011 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-07 02:17:05,014 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-07 02:17:05,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:05,088 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:17:05,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:17:05,668 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-07 02:17:05,669 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-07 02:17:05,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:05,720 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:17:06,186 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373388,373401] [2021-11-07 02:17:06,187 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_8feac4b6-d09f-49cc-b512-a23df579cf2c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i[373533,373546] [2021-11-07 02:17:06,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:17:06,438 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:17:06,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06 WrapperNode [2021-11-07 02:17:06,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:17:06,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:06,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:17:06,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:17:06,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:06,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:17:07,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:17:07,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:17:07,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:17:07,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:07,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:08,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:17:08,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:17:08,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:17:08,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:17:08,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (1/1) ... [2021-11-07 02:17:08,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:17:08,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:17:08,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:17:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:17:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:17:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:17:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:17:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:17:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:17:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:17:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:17:08,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:19:22,089 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0bv32; [2021-11-07 02:19:22,089 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0bv32; [2021-11-07 02:19:22,090 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0bv32; [2021-11-07 02:19:22,090 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0bv32; [2021-11-07 02:19:22,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0bv32; [2021-11-07 02:19:22,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 02:19:22,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:19:22,132 INFO L299 CfgBuilder]: Removed 4615 assume(true) statements. [2021-11-07 02:19:22,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:22 BoogieIcfgContainer [2021-11-07 02:19:22,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:19:22,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:19:22,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:19:22,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:19:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:17:01" (1/3) ... [2021-11-07 02:19:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144871c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:22, skipping insertion in model container [2021-11-07 02:19:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:17:06" (2/3) ... [2021-11-07 02:19:22,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144871c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:22, skipping insertion in model container [2021-11-07 02:19:22,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:22" (3/3) ... [2021-11-07 02:19:22,147 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-alteon-acenic.cil.i [2021-11-07 02:19:22,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:19:22,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 02:19:22,226 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:19:22,232 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 02:19:22,233 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 02:19:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 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 02:19:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:19:22,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:22,328 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] [2021-11-07 02:19:22,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1237024553, now seen corresponding path program 1 times [2021-11-07 02:19:22,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:22,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113067193] [2021-11-07 02:19:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:22,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:22,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:22,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:19:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:27,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:27,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:27,988 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 02:19:27,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:28,231 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 02:19:28,231 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:28,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113067193] [2021-11-07 02:19:28,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113067193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:28,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:28,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:19:28,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768587489] [2021-11-07 02:19:28,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:19:28,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:19:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:19:28,264 INFO L87 Difference]: Start difference. First operand has 3860 states, 3850 states have (on average 1.32) internal successors, (5082), 3859 states have internal predecessors, (5082), 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 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 02:19:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:31,331 INFO L93 Difference]: Finished difference Result 10547 states and 13876 transitions. [2021-11-07 02:19:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:19:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:19:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:31,398 INFO L225 Difference]: With dead ends: 10547 [2021-11-07 02:19:31,399 INFO L226 Difference]: Without dead ends: 6523 [2021-11-07 02:19:31,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:19:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2021-11-07 02:19:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6338. [2021-11-07 02:19:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6338 states, 6328 states have (on average 1.277496839443742) internal successors, (8084), 6337 states have internal predecessors, (8084), 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 02:19:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 8084 transitions. [2021-11-07 02:19:31,746 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 8084 transitions. Word has length 51 [2021-11-07 02:19:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:31,748 INFO L470 AbstractCegarLoop]: Abstraction has 6338 states and 8084 transitions. [2021-11-07 02:19:31,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 02:19:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 8084 transitions. [2021-11-07 02:19:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:19:31,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:31,753 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] [2021-11-07 02:19:31,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:31,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:31,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 503253660, now seen corresponding path program 1 times [2021-11-07 02:19:31,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:31,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924622934] [2021-11-07 02:19:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:31,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:31,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:32,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:19:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:37,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:37,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:37,366 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 02:19:37,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:37,668 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 02:19:37,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:37,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924622934] [2021-11-07 02:19:37,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924622934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:37,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:37,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:37,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539746700] [2021-11-07 02:19:37,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:37,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:37,673 INFO L87 Difference]: Start difference. First operand 6338 states and 8084 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 02:19:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:40,804 INFO L93 Difference]: Finished difference Result 15022 states and 19390 transitions. [2021-11-07 02:19:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:19:40,805 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 58 [2021-11-07 02:19:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:40,857 INFO L225 Difference]: With dead ends: 15022 [2021-11-07 02:19:40,857 INFO L226 Difference]: Without dead ends: 8736 [2021-11-07 02:19:40,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 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 02:19:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2021-11-07 02:19:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 8704. [2021-11-07 02:19:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8704 states, 8694 states have (on average 1.3004370830457788) internal successors, (11306), 8703 states have internal predecessors, (11306), 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 02:19:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8704 states to 8704 states and 11306 transitions. [2021-11-07 02:19:41,254 INFO L78 Accepts]: Start accepts. Automaton has 8704 states and 11306 transitions. Word has length 58 [2021-11-07 02:19:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:41,255 INFO L470 AbstractCegarLoop]: Abstraction has 8704 states and 11306 transitions. [2021-11-07 02:19:41,255 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 02:19:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 8704 states and 11306 transitions. [2021-11-07 02:19:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:19:41,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:41,260 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 02:19:41,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:41,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:41,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 329388047, now seen corresponding path program 1 times [2021-11-07 02:19:41,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:41,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705965827] [2021-11-07 02:19:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:41,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:41,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:41,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:41,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:19:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:46,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:46,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:46,723 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 02:19:46,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:46,940 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 02:19:46,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:46,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705965827] [2021-11-07 02:19:46,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705965827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:46,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:46,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:46,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722929905] [2021-11-07 02:19:46,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:46,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:46,943 INFO L87 Difference]: Start difference. First operand 8704 states and 11306 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) [2021-11-07 02:19:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:19:50,309 INFO L93 Difference]: Finished difference Result 30566 states and 39408 transitions. [2021-11-07 02:19:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:19:50,310 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 60 [2021-11-07 02:19:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:19:50,427 INFO L225 Difference]: With dead ends: 30566 [2021-11-07 02:19:50,427 INFO L226 Difference]: Without dead ends: 21914 [2021-11-07 02:19:50,451 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 02:19:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21914 states. [2021-11-07 02:19:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21914 to 21822. [2021-11-07 02:19:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21822 states, 21812 states have (on average 1.2860810562992848) internal successors, (28052), 21821 states have internal predecessors, (28052), 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 02:19:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21822 states to 21822 states and 28052 transitions. [2021-11-07 02:19:51,588 INFO L78 Accepts]: Start accepts. Automaton has 21822 states and 28052 transitions. Word has length 60 [2021-11-07 02:19:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:19:51,591 INFO L470 AbstractCegarLoop]: Abstraction has 21822 states and 28052 transitions. [2021-11-07 02:19:51,592 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 02:19:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 21822 states and 28052 transitions. [2021-11-07 02:19:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 02:19:51,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:19:51,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:19:51,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:19:51,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:19:51,818 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:19:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:19:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1712864629, now seen corresponding path program 1 times [2021-11-07 02:19:51,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:19:51,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911674608] [2021-11-07 02:19:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:19:51,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:19:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:19:51,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:19:51,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:19:57,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:19:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:19:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:57,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:19:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:19:57,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:19:57,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911674608] [2021-11-07 02:19:57,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911674608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:19:57,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:19:57,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:19:57,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436904541] [2021-11-07 02:19:57,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:19:57,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:19:57,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:19:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:19:57,850 INFO L87 Difference]: Start difference. First operand 21822 states and 28052 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 02:20:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:01,684 INFO L93 Difference]: Finished difference Result 50208 states and 65030 transitions. [2021-11-07 02:20:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 87 [2021-11-07 02:20:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:01,761 INFO L225 Difference]: With dead ends: 50208 [2021-11-07 02:20:01,762 INFO L226 Difference]: Without dead ends: 28438 [2021-11-07 02:20:01,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 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 02:20:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28438 states. [2021-11-07 02:20:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28438 to 28374. [2021-11-07 02:20:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28374 states, 28364 states have (on average 1.3005923000987167) internal successors, (36890), 28373 states have internal predecessors, (36890), 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 02:20:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28374 states to 28374 states and 36890 transitions. [2021-11-07 02:20:03,415 INFO L78 Accepts]: Start accepts. Automaton has 28374 states and 36890 transitions. Word has length 87 [2021-11-07 02:20:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:03,415 INFO L470 AbstractCegarLoop]: Abstraction has 28374 states and 36890 transitions. [2021-11-07 02:20:03,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 02:20:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 28374 states and 36890 transitions. [2021-11-07 02:20:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 02:20:03,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:03,419 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:03,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:03,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:03,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2032413775, now seen corresponding path program 1 times [2021-11-07 02:20:03,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:03,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625905641] [2021-11-07 02:20:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:03,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:03,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:03,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:20:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:08,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:08,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:09,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:09,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:09,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625905641] [2021-11-07 02:20:09,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625905641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:09,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:09,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:09,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358194876] [2021-11-07 02:20:09,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:09,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:09,746 INFO L87 Difference]: Start difference. First operand 28374 states and 36890 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:20:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:13,345 INFO L93 Difference]: Finished difference Result 61114 states and 79698 transitions. [2021-11-07 02:20:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 139 [2021-11-07 02:20:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:13,438 INFO L225 Difference]: With dead ends: 61114 [2021-11-07 02:20:13,438 INFO L226 Difference]: Without dead ends: 32792 [2021-11-07 02:20:13,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 274 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 02:20:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32792 states. [2021-11-07 02:20:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32792 to 32728. [2021-11-07 02:20:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32728 states, 32718 states have (on average 1.3062534384742344) internal successors, (42738), 32727 states have internal predecessors, (42738), 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 02:20:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32728 states to 32728 states and 42738 transitions. [2021-11-07 02:20:14,991 INFO L78 Accepts]: Start accepts. Automaton has 32728 states and 42738 transitions. Word has length 139 [2021-11-07 02:20:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:14,991 INFO L470 AbstractCegarLoop]: Abstraction has 32728 states and 42738 transitions. [2021-11-07 02:20:14,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 02:20:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32728 states and 42738 transitions. [2021-11-07 02:20:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 02:20:14,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:14,996 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:15,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:15,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:15,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1282956847, now seen corresponding path program 1 times [2021-11-07 02:20:15,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:15,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589930864] [2021-11-07 02:20:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:15,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:15,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:15,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:15,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:20:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:20,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:20,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:20:21,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:21,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589930864] [2021-11-07 02:20:21,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589930864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:21,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:21,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:21,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088662721] [2021-11-07 02:20:21,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:21,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:21,430 INFO L87 Difference]: Start difference. First operand 32728 states and 42738 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 02:20:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:25,844 INFO L93 Difference]: Finished difference Result 69876 states and 91478 transitions. [2021-11-07 02:20:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 144 [2021-11-07 02:20:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:25,934 INFO L225 Difference]: With dead ends: 69876 [2021-11-07 02:20:25,935 INFO L226 Difference]: Without dead ends: 37200 [2021-11-07 02:20:25,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 284 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 02:20:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37200 states. [2021-11-07 02:20:27,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37200 to 37136. [2021-11-07 02:20:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37136 states, 37126 states have (on average 1.3109411194311265) internal successors, (48670), 37135 states have internal predecessors, (48670), 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 02:20:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37136 states to 37136 states and 48670 transitions. [2021-11-07 02:20:27,579 INFO L78 Accepts]: Start accepts. Automaton has 37136 states and 48670 transitions. Word has length 144 [2021-11-07 02:20:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:27,579 INFO L470 AbstractCegarLoop]: Abstraction has 37136 states and 48670 transitions. [2021-11-07 02:20:27,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 02:20:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 37136 states and 48670 transitions. [2021-11-07 02:20:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-07 02:20:27,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:27,585 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:27,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:27,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:27,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:27,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:27,805 INFO L85 PathProgramCache]: Analyzing trace with hash 113450674, now seen corresponding path program 1 times [2021-11-07 02:20:27,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:27,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365660866] [2021-11-07 02:20:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:27,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:27,809 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:27,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:20:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:33,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:20:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 02:20:33,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 02:20:34,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:34,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365660866] [2021-11-07 02:20:34,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365660866] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:34,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:34,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:20:34,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711781056] [2021-11-07 02:20:34,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:20:34,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:20:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:20:34,557 INFO L87 Difference]: Start difference. First operand 37136 states and 48670 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:20:38,945 INFO L93 Difference]: Finished difference Result 78674 states and 103300 transitions. [2021-11-07 02:20:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:20:38,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2021-11-07 02:20:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:20:39,033 INFO L225 Difference]: With dead ends: 78674 [2021-11-07 02:20:39,033 INFO L226 Difference]: Without dead ends: 41590 [2021-11-07 02:20:39,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 368 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 02:20:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41590 states. [2021-11-07 02:20:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41590 to 41526. [2021-11-07 02:20:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41526 states, 41516 states have (on average 1.3143366412949224) internal successors, (54566), 41525 states have internal predecessors, (54566), 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 02:20:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41526 states to 41526 states and 54566 transitions. [2021-11-07 02:20:41,241 INFO L78 Accepts]: Start accepts. Automaton has 41526 states and 54566 transitions. Word has length 186 [2021-11-07 02:20:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:20:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 41526 states and 54566 transitions. [2021-11-07 02:20:41,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:20:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 41526 states and 54566 transitions. [2021-11-07 02:20:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-07 02:20:41,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:20:41,252 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:20:41,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:20:41,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:20:41,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:20:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:20:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash -624067939, now seen corresponding path program 1 times [2021-11-07 02:20:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:20:41,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738207700] [2021-11-07 02:20:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:20:41,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:20:41,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:20:41,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:20:41,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8feac4b6-d09f-49cc-b512-a23df579cf2c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:20:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:20:46,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:20:46,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:20:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 02:20:47,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:20:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 02:20:48,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:20:48,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738207700] [2021-11-07 02:20:48,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738207700] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:20:48,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:20:48,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-07 02:20:48,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869850884] [2021-11-07 02:20:48,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 02:20:48,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:20:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 02:20:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:20:48,890 INFO L87 Difference]: Start difference. First operand 41526 states and 54566 transitions. Second operand has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 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)