./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:19:06,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:19:06,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:19:06,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:19:06,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:19:06,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:19:06,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:19:06,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:19:06,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:19:06,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:19:06,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:19:06,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:19:06,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:19:06,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:19:06,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:19:06,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:19:06,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:19:06,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:19:06,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:19:06,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:19:06,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:19:06,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:19:06,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:19:06,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:19:06,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:19:06,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:19:06,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:19:06,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:19:06,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:19:06,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:19:06,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:19:06,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:19:06,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:19:06,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:19:06,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:19:06,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:19:06,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:19:06,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:19:06,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:19:06,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:19:06,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:19:06,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:19:06,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:19:06,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:19:06,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:19:06,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:19:06,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:19:06,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:19:06,270 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:19:06,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:19:06,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:19:06,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:19:06,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:19:06,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:19:06,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:19:06,273 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eed6410a0dd7e708ffb27250b590aa2913bf9f742c15130caf6eadad29510cc [2021-11-07 19:19:06,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:19:06,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:19:06,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:19:06,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:19:06,511 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:19:06,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-07 19:19:06,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cca84747/ebaf269798374029951ead0f77cca6a4/FLAGa65c513a4 [2021-11-07 19:19:07,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:19:07,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-07 19:19:07,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cca84747/ebaf269798374029951ead0f77cca6a4/FLAGa65c513a4 [2021-11-07 19:19:07,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cca84747/ebaf269798374029951ead0f77cca6a4 [2021-11-07 19:19:07,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:19:07,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:19:07,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:19:07,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:19:07,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:19:07,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:19:07" (1/1) ... [2021-11-07 19:19:07,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4783d558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:07, skipping insertion in model container [2021-11-07 19:19:07,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:19:07" (1/1) ... [2021-11-07 19:19:07,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:19:07,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:19:09,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-07 19:19:09,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-07 19:19:09,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-07 19:19:09,892 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-07 19:19:09,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:19:10,019 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:19:10,324 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404089,404102] [2021-11-07 19:19:10,325 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404258,404271] [2021-11-07 19:19:10,325 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404425,404438] [2021-11-07 19:19:10,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i[404593,404606] [2021-11-07 19:19:10,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:19:10,505 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:19:10,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10 WrapperNode [2021-11-07 19:19:10,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:19:10,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:19:10,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:19:10,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:19:10,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:10,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:13,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:19:13,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:19:13,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:19:13,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:19:13,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:13,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:14,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:14,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:15,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:15,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:15,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:16,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:19:16,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:19:16,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:19:16,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:19:16,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (1/1) ... [2021-11-07 19:19:16,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:19:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:19:16,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 19:19:16,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 19:19:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:19:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:19:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:19:16,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:19:16,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 19:19:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:19:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:30:04,456 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:30:04,456 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:30:04,456 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 19:30:04,457 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 19:30:04,457 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 19:30:04,457 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:30:04,457 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-07 19:30:04,457 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:30:04,459 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 19:30:04,460 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:30:04,461 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:30:04,465 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-07 19:30:04,466 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 19:30:04,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:30:04,616 INFO L299 CfgBuilder]: Removed 26530 assume(true) statements. [2021-11-07 19:30:04,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:04 BoogieIcfgContainer [2021-11-07 19:30:04,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:30:04,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:30:04,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:30:04,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:30:04,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:19:07" (1/3) ... [2021-11-07 19:30:04,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594d6d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:04, skipping insertion in model container [2021-11-07 19:30:04,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:19:10" (2/3) ... [2021-11-07 19:30:04,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594d6d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:30:04, skipping insertion in model container [2021-11-07 19:30:04,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:30:04" (3/3) ... [2021-11-07 19:30:04,645 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-via-via-rhine.cil.i [2021-11-07 19:30:04,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:30:04,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 150 error locations. [2021-11-07 19:30:04,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:30:04,733 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 [2021-11-07 19:30:04,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 150 error locations. [2021-11-07 19:30:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 21912 states, 21762 states have (on average 1.3165609778513003) internal successors, (28651), 21911 states have internal predecessors, (28651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 19:30:04,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:30:04,942 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] [2021-11-07 19:30:04,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 147 more)] === [2021-11-07 19:30:04,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:30:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1280611, now seen corresponding path program 1 times [2021-11-07 19:30:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:30:04,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118060493] [2021-11-07 19:30:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:30:04,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:30:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:30:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:30:05,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:30:05,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118060493] [2021-11-07 19:30:05,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118060493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:30:05,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:30:05,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:30:05,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391440404] [2021-11-07 19:30:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:30:05,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:30:05,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:30:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:30:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:06,007 INFO L87 Difference]: Start difference. First operand has 21912 states, 21762 states have (on average 1.3165609778513003) internal successors, (28651), 21911 states have internal predecessors, (28651), 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 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:08,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:30:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:30:09,477 INFO L93 Difference]: Finished difference Result 65006 states and 84997 transitions. [2021-11-07 19:30:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:30:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 19:30:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:30:09,640 INFO L225 Difference]: With dead ends: 65006 [2021-11-07 19:30:09,640 INFO L226 Difference]: Without dead ends: 42260 [2021-11-07 19:30:09,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:09,688 INFO L933 BasicCegarLoop]: 28046 mSDtfsCounter, 27651 mSDsluCounter, 27988 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2177.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27651 SdHoareTripleChecker+Valid, 56034 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.29ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2294.65ms IncrementalHoareTripleChecker+Time [2021-11-07 19:30:09,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27651 Valid, 56034 Invalid, 44 Unknown, 0 Unchecked, 84.29ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2294.65ms Time] [2021-11-07 19:30:09,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42260 states. [2021-11-07 19:30:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42260 to 42032. [2021-11-07 19:30:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42032 states, 41882 states have (on average 1.2798099422186142) internal successors, (53601), 42031 states have internal predecessors, (53601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42032 states to 42032 states and 53601 transitions. [2021-11-07 19:30:10,662 INFO L78 Accepts]: Start accepts. Automaton has 42032 states and 53601 transitions. Word has length 60 [2021-11-07 19:30:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:30:10,663 INFO L470 AbstractCegarLoop]: Abstraction has 42032 states and 53601 transitions. [2021-11-07 19:30:10,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42032 states and 53601 transitions. [2021-11-07 19:30:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 19:30:10,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:30:10,666 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] [2021-11-07 19:30:10,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:30:10,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 147 more)] === [2021-11-07 19:30:10,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:30:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1651063703, now seen corresponding path program 1 times [2021-11-07 19:30:10,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:30:10,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677465619] [2021-11-07 19:30:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:30:10,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:30:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:30:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:30:11,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:30:11,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677465619] [2021-11-07 19:30:11,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677465619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:30:11,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:30:11,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:30:11,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521244061] [2021-11-07 19:30:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:30:11,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:30:11,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:30:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:30:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:11,382 INFO L87 Difference]: Start difference. First operand 42032 states and 53601 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:13,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:30:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:30:15,589 INFO L93 Difference]: Finished difference Result 124698 states and 159061 transitions. [2021-11-07 19:30:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:30:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 19:30:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:30:15,781 INFO L225 Difference]: With dead ends: 124698 [2021-11-07 19:30:15,781 INFO L226 Difference]: Without dead ends: 82782 [2021-11-07 19:30:15,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:15,873 INFO L933 BasicCegarLoop]: 27021 mSDtfsCounter, 26148 mSDsluCounter, 26940 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2218.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26148 SdHoareTripleChecker+Valid, 53961 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.24ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2492.30ms IncrementalHoareTripleChecker+Time [2021-11-07 19:30:15,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26148 Valid, 53961 Invalid, 95 Unknown, 0 Unchecked, 105.24ms Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 2492.30ms Time] [2021-11-07 19:30:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82782 states. [2021-11-07 19:30:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82782 to 81862. [2021-11-07 19:30:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81862 states, 81712 states have (on average 1.2806319757196005) internal successors, (104643), 81861 states have internal predecessors, (104643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81862 states to 81862 states and 104643 transitions. [2021-11-07 19:30:17,723 INFO L78 Accepts]: Start accepts. Automaton has 81862 states and 104643 transitions. Word has length 66 [2021-11-07 19:30:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:30:17,724 INFO L470 AbstractCegarLoop]: Abstraction has 81862 states and 104643 transitions. [2021-11-07 19:30:17,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 81862 states and 104643 transitions. [2021-11-07 19:30:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 19:30:17,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:30:17,727 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] [2021-11-07 19:30:17,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:30:17,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 147 more)] === [2021-11-07 19:30:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:30:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash -841997582, now seen corresponding path program 1 times [2021-11-07 19:30:17,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:30:17,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858389480] [2021-11-07 19:30:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:30:17,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:30:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:30:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:30:18,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:30:18,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858389480] [2021-11-07 19:30:18,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858389480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:30:18,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:30:18,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:30:18,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531216244] [2021-11-07 19:30:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:30:18,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:30:18,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:30:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:30:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:18,652 INFO L87 Difference]: Start difference. First operand 81862 states and 104643 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:20,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:30:22,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:30:22,730 INFO L93 Difference]: Finished difference Result 175851 states and 224575 transitions. [2021-11-07 19:30:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:30:22,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 19:30:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:30:22,917 INFO L225 Difference]: With dead ends: 175851 [2021-11-07 19:30:22,917 INFO L226 Difference]: Without dead ends: 94105 [2021-11-07 19:30:23,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:23,017 INFO L933 BasicCegarLoop]: 27749 mSDtfsCounter, 23233 mSDsluCounter, 26875 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2190.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23233 SdHoareTripleChecker+Valid, 54624 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.41ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2364.60ms IncrementalHoareTripleChecker+Time [2021-11-07 19:30:23,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23233 Valid, 54624 Invalid, 100 Unknown, 0 Unchecked, 38.41ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2364.60ms Time] [2021-11-07 19:30:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94105 states. [2021-11-07 19:30:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94105 to 93827. [2021-11-07 19:30:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93827 states, 93677 states have (on average 1.2793001483822068) internal successors, (119841), 93826 states have internal predecessors, (119841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93827 states to 93827 states and 119841 transitions. [2021-11-07 19:30:25,144 INFO L78 Accepts]: Start accepts. Automaton has 93827 states and 119841 transitions. Word has length 71 [2021-11-07 19:30:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:30:25,144 INFO L470 AbstractCegarLoop]: Abstraction has 93827 states and 119841 transitions. [2021-11-07 19:30:25,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:30:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 93827 states and 119841 transitions. [2021-11-07 19:30:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 19:30:25,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:30:25,147 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] [2021-11-07 19:30:25,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:30:25,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 147 more)] === [2021-11-07 19:30:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:30:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1413898621, now seen corresponding path program 1 times [2021-11-07 19:30:25,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:30:25,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957310940] [2021-11-07 19:30:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:30:25,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:30:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:30:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:30:25,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:30:25,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957310940] [2021-11-07 19:30:25,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957310940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:30:25,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:30:25,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:30:25,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004554131] [2021-11-07 19:30:25,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:30:25,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:30:25,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:30:25,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:30:25,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:30:25,530 INFO L87 Difference]: Start difference. First operand 93827 states and 119841 transitions. 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) [2021-11-07 19:30:27,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []