./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU --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 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:23:57,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:23:57,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:23:57,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:23:57,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:23:57,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:23:57,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:23:57,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:23:57,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:23:57,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:23:57,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:23:57,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:23:57,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:23:57,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:23:57,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:23:57,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:23:57,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:23:57,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:23:57,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:23:57,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:23:57,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:23:57,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:23:57,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:23:57,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:23:57,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:23:57,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:23:57,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:23:57,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:23:57,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:23:57,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:23:57,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:23:57,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:23:57,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:23:57,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:23:57,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:23:57,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:23:57,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:23:57,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:23:57,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:23:57,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:23:57,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:23:57,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:23:57,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:23:57,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:23:57,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:23:57,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:23:57,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:23:57,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:23:57,355 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:23:57,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:23:57,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:23:57,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:23:57,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:23:57,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:23:57,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:23:57,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:23:57,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:23:57,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:23:57,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:23:57,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:23:57,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:23:57,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:23:57,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:23:57,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:23:57,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:23:57,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:23:57,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:23:57,361 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:23:57,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:23:57,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:23:57,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:23:57,362 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_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 [2021-11-02 22:23:57,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:23:57,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:23:57,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:23:57,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:23:57,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:23:57,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-02 22:23:57,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/data/95ae50b1d/96196c0c8fd9471b8f07608f9bb08158/FLAG5e458ef3a [2021-11-02 22:23:59,312 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:23:59,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-02 22:23:59,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/data/95ae50b1d/96196c0c8fd9471b8f07608f9bb08158/FLAG5e458ef3a [2021-11-02 22:23:59,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/data/95ae50b1d/96196c0c8fd9471b8f07608f9bb08158 [2021-11-02 22:23:59,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:23:59,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:23:59,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:23:59,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:23:59,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:23:59,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cf8c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59, skipping insertion in model container [2021-11-02 22:23:59,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:24:00,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:24:06,131 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_f1f15bf1-a657-4845-a5a9-6b7f07e06324/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-02 22:24:06,135 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_f1f15bf1-a657-4845-a5a9-6b7f07e06324/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-02 22:24:06,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:24:06,227 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:24:06,977 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_f1f15bf1-a657-4845-a5a9-6b7f07e06324/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-02 22:24:06,978 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_f1f15bf1-a657-4845-a5a9-6b7f07e06324/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-02 22:24:06,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:24:07,284 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:24:07,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07 WrapperNode [2021-11-02 22:24:07,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:24:07,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:24:07,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:24:07,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:24:07,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:07,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:11,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:24:11,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:24:11,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:24:11,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:24:11,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:11,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:12,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:12,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:14,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:15,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:15,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:16,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:24:16,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:24:16,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:24:16,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:24:16,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (1/1) ... [2021-11-02 22:24:16,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:24:16,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:16,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:24:16,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f15bf1-a657-4845-a5a9-6b7f07e06324/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:24:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-02 22:24:16,198 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-02 22:24:16,198 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-02 22:24:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-02 22:24:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-02 22:24:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-02 22:24:16,199 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-02 22:24:16,199 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-02 22:24:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:24:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:24:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:24:16,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:24:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:24:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-02 22:24:16,201 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-02 22:24:16,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:24:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:24:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:24:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 22:24:16,202 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-02 22:24:16,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-02 22:24:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:24:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:24:16,203 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-02 22:24:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-02 22:24:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:24:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:24:16,204 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-02 22:24:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-02 22:24:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-02 22:24:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-02 22:24:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-02 22:24:16,205 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-02 22:24:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-02 22:24:16,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-02 22:24:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:24:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-02 22:24:16,206 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-02 22:24:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-02 22:24:16,207 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-02 22:24:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:24:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-02 22:24:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-02 22:24:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-02 22:24:16,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-02 22:24:16,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:24:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-02 22:24:16,209 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-02 22:24:16,209 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-02 22:24:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-02 22:24:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-02 22:24:16,210 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-02 22:24:16,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:24:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-02 22:24:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-02 22:24:16,211 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-02 22:24:16,212 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-02 22:24:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-02 22:24:16,214 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-02 22:24:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:24:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:26:15,452 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 22:26:15,453 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-02 22:26:15,453 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 22:26:15,453 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,453 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,454 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,454 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,454 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,454 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,455 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,457 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 22:26:15,459 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 22:26:15,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:26:15,995 INFO L299 CfgBuilder]: Removed 21830 assume(true) statements. [2021-11-02 22:26:16,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:16 BoogieIcfgContainer [2021-11-02 22:26:16,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:26:16,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:26:16,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:26:16,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:26:16,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:23:59" (1/3) ... [2021-11-02 22:26:16,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3906f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:16, skipping insertion in model container [2021-11-02 22:26:16,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:24:07" (2/3) ... [2021-11-02 22:26:16,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3906f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:26:16, skipping insertion in model container [2021-11-02 22:26:16,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:26:16" (3/3) ... [2021-11-02 22:26:16,027 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-02 22:26:16,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:26:16,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-02 22:26:16,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:26:16,187 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 [2021-11-02 22:26:16,187 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-02 22:26:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-02 22:26:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 22:26:16,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:16,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:16,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:26:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1054011777, now seen corresponding path program 1 times [2021-11-02 22:26:16,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:16,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796942793] [2021-11-02 22:26:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:16,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:17,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:17,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796942793] [2021-11-02 22:26:17,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796942793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:17,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:17,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:17,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744492518] [2021-11-02 22:26:17,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:17,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:17,956 INFO L87 Difference]: Start difference. First operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:22,133 INFO L93 Difference]: Finished difference Result 48591 states and 63143 transitions. [2021-11-02 22:26:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-02 22:26:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:22,592 INFO L225 Difference]: With dead ends: 48591 [2021-11-02 22:26:22,592 INFO L226 Difference]: Without dead ends: 30778 [2021-11-02 22:26:22,931 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 [2021-11-02 22:26:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30778 states. [2021-11-02 22:26:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30778 to 30770. [2021-11-02 22:26:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30770 states, 30557 states have (on average 1.2775141538763621) internal successors, (39037), 30559 states have internal predecessors, (39037), 167 states have call successors, (167), 44 states have call predecessors, (167), 44 states have return successors, (167), 167 states have call predecessors, (167), 167 states have call successors, (167) [2021-11-02 22:26:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30770 states to 30770 states and 39371 transitions. [2021-11-02 22:26:24,758 INFO L78 Accepts]: Start accepts. Automaton has 30770 states and 39371 transitions. Word has length 86 [2021-11-02 22:26:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:24,770 INFO L470 AbstractCegarLoop]: Abstraction has 30770 states and 39371 transitions. [2021-11-02 22:26:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 30770 states and 39371 transitions. [2021-11-02 22:26:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:26:24,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:24,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:24,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:26:24,803 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:26:24,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1596591377, now seen corresponding path program 1 times [2021-11-02 22:26:24,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:24,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44492037] [2021-11-02 22:26:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:24,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:25,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:25,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44492037] [2021-11-02 22:26:25,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44492037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:25,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:25,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:25,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952316735] [2021-11-02 22:26:25,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:25,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:25,424 INFO L87 Difference]: Start difference. First operand 30770 states and 39371 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-02 22:26:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:30,723 INFO L93 Difference]: Finished difference Result 90909 states and 116603 transitions. [2021-11-02 22:26:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:30,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-02 22:26:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:31,290 INFO L225 Difference]: With dead ends: 90909 [2021-11-02 22:26:31,291 INFO L226 Difference]: Without dead ends: 60263 [2021-11-02 22:26:31,558 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 [2021-11-02 22:26:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60263 states. [2021-11-02 22:26:34,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60263 to 60126. [2021-11-02 22:26:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60126 states, 59702 states have (on average 1.27702589527989) internal successors, (76241), 59705 states have internal predecessors, (76241), 334 states have call successors, (334), 88 states have call predecessors, (334), 88 states have return successors, (636), 334 states have call predecessors, (636), 334 states have call successors, (636) [2021-11-02 22:26:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60126 states to 60126 states and 77211 transitions. [2021-11-02 22:26:35,291 INFO L78 Accepts]: Start accepts. Automaton has 60126 states and 77211 transitions. Word has length 91 [2021-11-02 22:26:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:35,294 INFO L470 AbstractCegarLoop]: Abstraction has 60126 states and 77211 transitions. [2021-11-02 22:26:35,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-02 22:26:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 60126 states and 77211 transitions. [2021-11-02 22:26:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 22:26:35,349 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:35,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:26:35,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:26:35,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:26:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1781012299, now seen corresponding path program 1 times [2021-11-02 22:26:35,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:35,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065032890] [2021-11-02 22:26:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:35,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:35,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:35,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065032890] [2021-11-02 22:26:35,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065032890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:26:35,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:26:35,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:26:35,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977450827] [2021-11-02 22:26:35,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:26:35,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:26:35,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:26:35,903 INFO L87 Difference]: Start difference. First operand 60126 states and 77211 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:42,317 INFO L93 Difference]: Finished difference Result 178118 states and 228711 transitions. [2021-11-02 22:26:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:26:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 22:26:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:43,923 INFO L225 Difference]: With dead ends: 178118 [2021-11-02 22:26:43,924 INFO L226 Difference]: Without dead ends: 118116 [2021-11-02 22:26:44,653 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 [2021-11-02 22:26:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118116 states.