./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G --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 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:30:13,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:30:13,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:30:13,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:30:13,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:30:13,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:30:13,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:30:13,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:30:13,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:30:13,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:30:13,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:30:13,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:30:13,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:30:13,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:30:13,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:30:13,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:30:13,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:30:13,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:30:13,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:30:13,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:30:13,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:30:13,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:30:13,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:30:13,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:30:13,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:30:13,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:30:13,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:30:13,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:30:13,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:30:13,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:30:13,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:30:13,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:30:13,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:30:13,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:30:13,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:30:13,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:30:13,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:30:13,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:30:13,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:30:13,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:30:13,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:30:13,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 12:30:13,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:30:13,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:30:13,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:30:13,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:30:13,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:30:13,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:30:13,320 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:30:13,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:30:13,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:30:13,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:30:13,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:30:13,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:30:13,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:30:13,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:30:13,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:30:13,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:30:13,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:30:13,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:30:13,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:30:13,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:30:13,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:30:13,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:30:13,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:30:13,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:30:13,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:30:13,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:30:13,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:30:13,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:30:13,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:30:13,328 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 [2021-11-23 12:30:13,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:30:13,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:30:13,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:30:13,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:30:13,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:30:13,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-23 12:30:13,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/data/1054c520f/7286654ac5ed4bc698881b3ade4d7a5c/FLAGe236ce18e [2021-11-23 12:30:14,983 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:30:14,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-23 12:30:15,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/data/1054c520f/7286654ac5ed4bc698881b3ade4d7a5c/FLAGe236ce18e [2021-11-23 12:30:15,143 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/data/1054c520f/7286654ac5ed4bc698881b3ade4d7a5c [2021-11-23 12:30:15,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:30:15,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:30:15,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:30:15,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:30:15,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:30:15,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:30:15" (1/1) ... [2021-11-23 12:30:15,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558f02d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:15, skipping insertion in model container [2021-11-23 12:30:15,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:30:15" (1/1) ... [2021-11-23 12:30:15,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:30:15,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:30:20,822 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-23 12:30:20,826 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-23 12:30:20,827 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-23 12:30:20,828 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-23 12:30:20,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:30:20,913 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:30:21,524 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-23 12:30:21,525 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-23 12:30:21,526 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-23 12:30:21,527 WARN L230 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_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-23 12:30:21,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:30:21,869 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:30:21,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21 WrapperNode [2021-11-23 12:30:21,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:30:21,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:30:21,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:30:21,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:30:21,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:22,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:30,951 INFO L137 Inliner]: procedures = 663, calls = 2943, calls flagged for inlining = 1509, calls inlined = 41515, statements flattened = 358583 [2021-11-23 12:30:30,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:30:30,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:30:30,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:30:30,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:30:30,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:30,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:33,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:33,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:37,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:38,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:38,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:41,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:30:41,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:30:41,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:30:41,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:30:41,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (1/1) ... [2021-11-23 12:30:41,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:30:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:30:41,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:30:41,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b43a867-5ccd-4d83-9cec-d7dcf9978d38/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:30:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-23 12:30:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:30:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-23 12:30:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 12:30:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 12:30:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:30:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:30:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:30:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:30:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:30:41,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:30:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 12:30:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 12:30:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:30:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:30:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:30:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:30:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:30:43,134 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:30:43,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:33:25,267 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 12:33:25,268 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res#1 := 0; [2021-11-23 12:33:25,268 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res#1 := 0; [2021-11-23 12:33:25,268 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res#1 := 0; [2021-11-23 12:33:25,269 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#1: ldv_switch_4_#res#1 := 0; [2021-11-23 12:33:25,269 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res#1 := 0; [2021-11-23 12:33:25,269 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 12:33:25,270 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 12:33:25,275 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 12:33:25,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 12:33:25,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 12:33:25,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 12:33:25,277 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 12:33:25,300 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:33:25,478 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:33:25,478 INFO L301 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-23 12:33:25,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:33:25 BoogieIcfgContainer [2021-11-23 12:33:25,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:33:25,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:33:25,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:33:25,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:33:25,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:30:15" (1/3) ... [2021-11-23 12:33:25,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48639896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:33:25, skipping insertion in model container [2021-11-23 12:33:25,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:30:21" (2/3) ... [2021-11-23 12:33:25,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48639896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:33:25, skipping insertion in model container [2021-11-23 12:33:25,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:33:25" (3/3) ... [2021-11-23 12:33:25,541 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-23 12:33:25,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:33:25,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 209 error locations. [2021-11-23 12:33:25,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:33:25,787 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 [2021-11-23 12:33:25,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 209 error locations. [2021-11-23 12:33:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 58536 states, 58327 states have (on average 1.1879404049582527) internal successors, (69289), 58535 states have internal predecessors, (69289), 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) [2021-11-23 12:33:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:33:26,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:26,500 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:26,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-23 12:33:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1328459520, now seen corresponding path program 1 times [2021-11-23 12:33:26,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976337201] [2021-11-23 12:33:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:26,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:27,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976337201] [2021-11-23 12:33:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976337201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:33:27,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:33:27,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:33:27,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508696873] [2021-11-23 12:33:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:33:27,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:33:27,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:27,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:33:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:33:27,366 INFO L87 Difference]: Start difference. First operand has 58536 states, 58327 states have (on average 1.1879404049582527) internal successors, (69289), 58535 states have internal predecessors, (69289), 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 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:32,119 INFO L93 Difference]: Finished difference Result 174212 states and 206112 transitions. [2021-11-23 12:33:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:33:32,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:33:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:32,571 INFO L225 Difference]: With dead ends: 174212 [2021-11-23 12:33:32,571 INFO L226 Difference]: Without dead ends: 115177 [2021-11-23 12:33:32,745 INFO L932 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 [2021-11-23 12:33:32,747 INFO L933 BasicCegarLoop]: 68353 mSDtfsCounter, 67833 mSDsluCounter, 68304 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67833 SdHoareTripleChecker+Valid, 136657 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:32,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67833 Valid, 136657 Invalid, 34 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:33:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115177 states. [2021-11-23 12:33:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115177 to 114861. [2021-11-23 12:33:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114861 states, 114652 states have (on average 1.1746328018700067) internal successors, (134674), 114860 states have internal predecessors, (134674), 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) [2021-11-23 12:33:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114861 states to 114861 states and 134674 transitions. [2021-11-23 12:33:36,992 INFO L78 Accepts]: Start accepts. Automaton has 114861 states and 134674 transitions. Word has length 74 [2021-11-23 12:33:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:36,993 INFO L470 AbstractCegarLoop]: Abstraction has 114861 states and 134674 transitions. [2021-11-23 12:33:36,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 114861 states and 134674 transitions. [2021-11-23 12:33:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 12:33:36,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:36,999 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:37,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:33:37,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr93ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-23 12:33:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 441419631, now seen corresponding path program 1 times [2021-11-23 12:33:37,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:37,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007083102] [2021-11-23 12:33:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:37,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:37,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:37,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007083102] [2021-11-23 12:33:37,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007083102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:33:37,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:33:37,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:33:37,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872537234] [2021-11-23 12:33:37,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:33:37,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:33:37,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:33:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:33:37,813 INFO L87 Difference]: Start difference. First operand 114861 states and 134674 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-23 12:33:41,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:41,400 INFO L93 Difference]: Finished difference Result 256497 states and 300872 transitions. [2021-11-23 12:33:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:33:41,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-23 12:33:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:41,809 INFO L225 Difference]: With dead ends: 256497 [2021-11-23 12:33:41,809 INFO L226 Difference]: Without dead ends: 141785 [2021-11-23 12:33:41,985 INFO L932 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 [2021-11-23 12:33:41,991 INFO L933 BasicCegarLoop]: 67607 mSDtfsCounter, 15970 mSDsluCounter, 67541 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15970 SdHoareTripleChecker+Valid, 135148 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:41,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15970 Valid, 135148 Invalid, 153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:33:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141785 states. [2021-11-23 12:33:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141785 to 141441. [2021-11-23 12:33:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141441 states, 141232 states have (on average 1.1754984706015634) internal successors, (166018), 141440 states have internal predecessors, (166018), 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) [2021-11-23 12:33:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141441 states to 141441 states and 166018 transitions. [2021-11-23 12:33:45,675 INFO L78 Accepts]: Start accepts. Automaton has 141441 states and 166018 transitions. Word has length 79 [2021-11-23 12:33:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:45,676 INFO L470 AbstractCegarLoop]: Abstraction has 141441 states and 166018 transitions. [2021-11-23 12:33:45,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-23 12:33:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 141441 states and 166018 transitions. [2021-11-23 12:33:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 12:33:45,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:45,679 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:45,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:33:45,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-23 12:33:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash -101259071, now seen corresponding path program 1 times [2021-11-23 12:33:45,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:45,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978368038] [2021-11-23 12:33:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:45,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:45,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:45,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978368038] [2021-11-23 12:33:45,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978368038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:33:45,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:33:45,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:33:45,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992040143] [2021-11-23 12:33:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:33:45,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:33:45,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:33:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:33:45,843 INFO L87 Difference]: Start difference. First operand 141441 states and 166018 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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)