./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:42:47,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:42:47,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:42:47,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:42:47,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:42:47,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:42:47,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:42:47,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:42:47,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:42:47,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:42:47,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:42:47,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:42:47,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:42:47,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:42:47,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:42:47,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:42:47,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:42:47,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:42:47,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:42:47,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:42:47,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:42:47,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:42:47,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:42:47,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:42:47,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:42:47,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:42:47,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:42:47,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:42:47,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:42:47,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:42:47,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:42:47,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:42:47,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:42:47,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:42:47,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:42:47,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:42:47,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:42:47,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:42:47,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:42:47,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:42:47,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:42:47,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:42:47,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:42:47,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:42:47,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:42:47,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:42:47,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:42:47,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:42:47,263 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:42:47,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:42:47,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:42:47,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:42:47,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:42:47,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:42:47,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:42:47,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:42:47,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:42:47,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:42:47,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:42:47,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:42:47,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:42:47,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:42:47,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:42:47,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:42:47,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:42:47,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:42:47,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:42:47,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:42:47,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:42:47,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:42:47,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:42:47,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2021-11-09 09:42:47,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:42:47,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:42:47,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:42:47,717 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:42:47,718 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:42:47,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-09 09:42:47,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/data/03b4aaa2a/58742521565e4ee3bd31c6122096aa68/FLAG382502fcd [2021-11-09 09:42:49,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:42:49,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-09 09:42:49,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/data/03b4aaa2a/58742521565e4ee3bd31c6122096aa68/FLAG382502fcd [2021-11-09 09:42:49,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/data/03b4aaa2a/58742521565e4ee3bd31c6122096aa68 [2021-11-09 09:42:49,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:42:49,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:42:49,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:42:49,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:42:49,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:42:49,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:42:49" (1/1) ... [2021-11-09 09:42:49,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c00c1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:49, skipping insertion in model container [2021-11-09 09:42:49,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:42:49" (1/1) ... [2021-11-09 09:42:49,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:42:49,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:42:55,518 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-09 09:42:55,522 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-09 09:42:55,523 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-09 09:42:55,523 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-09 09:42:55,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:42:55,640 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:42:56,405 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-09 09:42:56,422 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-09 09:42:56,422 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-09 09:42:56,423 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_8357fee5-6457-448f-a350-f95b5062ef21/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-09 09:42:56,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:42:56,979 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:42:56,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56 WrapperNode [2021-11-09 09:42:56,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:42:56,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:42:56,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:42:56,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:42:56,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:42:57,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:02,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:43:02,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:43:02,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:43:02,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:43:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:02,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:02,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:02,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:04,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:04,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:04,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:05,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:43:05,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:43:05,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:43:05,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:43:05,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (1/1) ... [2021-11-09 09:43:05,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:43:05,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:05,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:43:05,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8357fee5-6457-448f-a350-f95b5062ef21/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:43:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:43:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-09 09:43:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 09:43:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:43:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:43:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:43:05,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:43:05,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:43:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 09:43:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 09:43:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:43:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:43:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:43:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:43:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:45:40,936 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-09 09:45:40,936 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-09 09:45:40,936 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,936 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,937 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,938 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,938 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,938 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-09 09:45:40,938 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-09 09:45:40,939 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-09 09:45:40,941 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-09 09:45:40,944 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-09 09:45:40,948 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#10: ldv_switch_2_#res := 0; [2021-11-09 09:45:41,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:45:41,055 INFO L299 CfgBuilder]: Removed 18869 assume(true) statements. [2021-11-09 09:45:41,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:45:41 BoogieIcfgContainer [2021-11-09 09:45:41,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:45:41,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:45:41,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:45:41,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:45:41,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:42:49" (1/3) ... [2021-11-09 09:45:41,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d38708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:45:41, skipping insertion in model container [2021-11-09 09:45:41,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:42:56" (2/3) ... [2021-11-09 09:45:41,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d38708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:45:41, skipping insertion in model container [2021-11-09 09:45:41,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:45:41" (3/3) ... [2021-11-09 09:45:41,090 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-09 09:45:41,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:45:41,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 418 error locations. [2021-11-09 09:45:41,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:45:41,263 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=PETRI_NET, 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 [2021-11-09 09:45:41,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 418 error locations. [2021-11-09 09:45:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 17950 states, 17532 states have (on average 1.3671001597079626) internal successors, (23968), 17949 states have internal predecessors, (23968), 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) [2021-11-09 09:45:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 09:45:41,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:41,597 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] [2021-11-09 09:45:41,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-09 09:45:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash 461028898, now seen corresponding path program 1 times [2021-11-09 09:45:41,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:41,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372273943] [2021-11-09 09:45:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:41,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:43,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:43,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372273943] [2021-11-09 09:45:43,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372273943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:43,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:43,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:45:43,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842493052] [2021-11-09 09:45:43,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:45:43,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:45:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:45:43,489 INFO L87 Difference]: Start difference. First operand has 17950 states, 17532 states have (on average 1.3671001597079626) internal successors, (23968), 17949 states have internal predecessors, (23968), 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 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-09 09:45:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:47,615 INFO L93 Difference]: Finished difference Result 53244 states and 71129 transitions. [2021-11-09 09:45:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:45:47,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-09 09:45:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:47,881 INFO L225 Difference]: With dead ends: 53244 [2021-11-09 09:45:47,881 INFO L226 Difference]: Without dead ends: 34254 [2021-11-09 09:45:47,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:45:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34254 states. [2021-11-09 09:45:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34254 to 33496. [2021-11-09 09:45:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33496 states, 33078 states have (on average 1.3203035250015116) internal successors, (43673), 33495 states have internal predecessors, (43673), 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) [2021-11-09 09:45:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33496 states to 33496 states and 43673 transitions. [2021-11-09 09:45:49,612 INFO L78 Accepts]: Start accepts. Automaton has 33496 states and 43673 transitions. Word has length 57 [2021-11-09 09:45:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:49,615 INFO L470 AbstractCegarLoop]: Abstraction has 33496 states and 43673 transitions. [2021-11-09 09:45:49,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-09 09:45:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 33496 states and 43673 transitions. [2021-11-09 09:45:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:45:49,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:49,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:49,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:45:49,630 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr123ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-09 09:45:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1668319127, now seen corresponding path program 1 times [2021-11-09 09:45:49,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:49,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81052287] [2021-11-09 09:45:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:49,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:50,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:50,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81052287] [2021-11-09 09:45:50,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81052287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:50,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:50,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:45:50,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726387129] [2021-11-09 09:45:50,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:45:50,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:50,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:45:50,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:45:50,484 INFO L87 Difference]: Start difference. First operand 33496 states and 43673 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 09:45:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:45:54,508 INFO L93 Difference]: Finished difference Result 63727 states and 82745 transitions. [2021-11-09 09:45:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:45:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-09 09:45:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:45:54,616 INFO L225 Difference]: With dead ends: 63727 [2021-11-09 09:45:54,617 INFO L226 Difference]: Without dead ends: 30339 [2021-11-09 09:45:54,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:45:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30339 states. [2021-11-09 09:45:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30339 to 29937. [2021-11-09 09:45:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29937 states, 29519 states have (on average 1.3186761069141908) internal successors, (38926), 29936 states have internal predecessors, (38926), 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) [2021-11-09 09:45:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29937 states to 29937 states and 38926 transitions. [2021-11-09 09:45:55,871 INFO L78 Accepts]: Start accepts. Automaton has 29937 states and 38926 transitions. Word has length 61 [2021-11-09 09:45:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:45:55,872 INFO L470 AbstractCegarLoop]: Abstraction has 29937 states and 38926 transitions. [2021-11-09 09:45:55,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 09:45:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29937 states and 38926 transitions. [2021-11-09 09:45:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:45:55,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:45:55,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:45:55,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:45:55,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-09 09:45:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:45:55,890 INFO L85 PathProgramCache]: Analyzing trace with hash 805988335, now seen corresponding path program 1 times [2021-11-09 09:45:55,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:45:55,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843364633] [2021-11-09 09:45:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:45:55,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:45:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:45:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:45:57,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:45:57,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843364633] [2021-11-09 09:45:57,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843364633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:45:57,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:45:57,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:45:57,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778317347] [2021-11-09 09:45:57,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:45:57,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:45:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:45:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:45:57,009 INFO L87 Difference]: Start difference. First operand 29937 states and 38926 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:46:00,669 INFO L93 Difference]: Finished difference Result 79631 states and 103313 transitions. [2021-11-09 09:46:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:46:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 09:46:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:46:00,861 INFO L225 Difference]: With dead ends: 79631 [2021-11-09 09:46:00,861 INFO L226 Difference]: Without dead ends: 49802 [2021-11-09 09:46:00,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:46:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49802 states. [2021-11-09 09:46:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49802 to 48185. [2021-11-09 09:46:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48185 states, 47767 states have (on average 1.3203048129461763) internal successors, (63067), 48184 states have internal predecessors, (63067), 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) [2021-11-09 09:46:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48185 states to 48185 states and 63067 transitions. [2021-11-09 09:46:02,790 INFO L78 Accepts]: Start accepts. Automaton has 48185 states and 63067 transitions. Word has length 64 [2021-11-09 09:46:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:46:02,791 INFO L470 AbstractCegarLoop]: Abstraction has 48185 states and 63067 transitions. [2021-11-09 09:46:02,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:46:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 48185 states and 63067 transitions. [2021-11-09 09:46:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-09 09:46:02,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:46:02,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:46:02,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:46:02,795 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-09 09:46:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:46:02,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1783598557, now seen corresponding path program 1 times [2021-11-09 09:46:02,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:46:02,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229176573] [2021-11-09 09:46:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:46:02,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:46:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:46:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:46:03,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:46:03,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229176573] [2021-11-09 09:46:03,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229176573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:46:03,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:46:03,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:46:03,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426168262] [2021-11-09 09:46:03,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:46:03,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:46:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:46:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:46:03,544 INFO L87 Difference]: Start difference. First operand 48185 states and 63067 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-09 09:46:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:46:08,038 INFO L93 Difference]: Finished difference Result 130787 states and 170977 transitions. [2021-11-09 09:46:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:46:08,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-09 09:46:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:46:08,259 INFO L225 Difference]: With dead ends: 130787 [2021-11-09 09:46:08,259 INFO L226 Difference]: Without dead ends: 82710 [2021-11-09 09:46:08,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:46:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82710 states. [2021-11-09 09:46:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82710 to 81388. [2021-11-09 09:46:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81388 states, 80970 states have (on average 1.3204643695195752) internal successors, (106918), 81387 states have internal predecessors, (106918), 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) [2021-11-09 09:46:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81388 states to 81388 states and 106918 transitions. [2021-11-09 09:46:11,120 INFO L78 Accepts]: Start accepts. Automaton has 81388 states and 106918 transitions. Word has length 65 [2021-11-09 09:46:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:46:11,121 INFO L470 AbstractCegarLoop]: Abstraction has 81388 states and 106918 transitions. [2021-11-09 09:46:11,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-09 09:46:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 81388 states and 106918 transitions. [2021-11-09 09:46:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 09:46:11,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:46:11,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:46:11,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:46:11,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr352ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 415 more)] === [2021-11-09 09:46:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:46:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1040541106, now seen corresponding path program 1 times [2021-11-09 09:46:11,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:46:11,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602749390] [2021-11-09 09:46:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:46:11,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:46:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:46:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:46:11,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:46:11,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602749390] [2021-11-09 09:46:11,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602749390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:46:11,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:46:11,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:46:11,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495276760] [2021-11-09 09:46:11,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:46:11,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:46:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:46:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:46:11,911 INFO L87 Difference]: Start difference. First operand 81388 states and 106918 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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)