./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.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 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:08:19,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:08:19,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:08:19,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:08:19,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:08:19,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:08:19,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:08:19,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:08:19,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:08:19,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:08:19,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:08:19,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:08:19,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:08:19,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:08:19,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:08:19,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:08:19,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:08:19,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:08:19,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:08:19,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:08:19,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:08:19,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:08:19,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:08:19,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:08:19,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:08:19,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:08:19,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:08:19,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:08:19,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:08:19,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:08:19,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:08:19,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:08:19,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:08:19,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:08:19,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:08:19,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:08:19,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:08:19,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:08:19,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:08:19,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:08:19,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:08:19,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:08:19,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:08:19,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:08:19,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:08:19,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:08:19,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:08:19,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:08:19,218 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:08:19,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:08:19,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:08:19,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:08:19,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:08:19,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:08:19,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:08:19,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:08:19,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:08:19,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:08:19,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:08:19,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:08:19,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:08:19,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:08:19,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:08:19,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:08:19,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:08:19,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:08:19,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:08:19,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:08:19,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:08:19,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:08:19,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:08:19,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2021-11-06 19:08:19,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:08:19,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:08:19,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:08:19,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:08:19,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:08:19,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 19:08:19,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e29893f/4ce1e42d896f4460ac39c4eae7670fea/FLAGc202edd1c [2021-11-06 19:08:20,299 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:08:20,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 19:08:20,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e29893f/4ce1e42d896f4460ac39c4eae7670fea/FLAGc202edd1c [2021-11-06 19:08:20,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e29893f/4ce1e42d896f4460ac39c4eae7670fea [2021-11-06 19:08:20,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:08:20,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:08:20,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:08:20,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:08:20,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:08:20,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:20" (1/1) ... [2021-11-06 19:08:20,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bd87ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:20, skipping insertion in model container [2021-11-06 19:08:20,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:08:20" (1/1) ... [2021-11-06 19:08:20,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:08:20,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:08:24,797 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-06 19:08:24,800 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-06 19:08:24,800 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-06 19:08:24,801 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-06 19:08:24,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:08:24,909 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:08:25,375 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-06 19:08:25,376 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-06 19:08:25,377 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-06 19:08:25,377 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-06 19:08:25,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:08:25,641 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:08:25,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25 WrapperNode [2021-11-06 19:08:25,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:08:25,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:08:25,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:08:25,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:08:25,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:25,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:27,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:08:27,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:08:27,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:08:27,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:08:27,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:27,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:28,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:28,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:29,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:29,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:29,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:30,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:08:30,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:08:30,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:08:30,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:08:30,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (1/1) ... [2021-11-06 19:08:30,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:08:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:08:30,224 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) [2021-11-06 19:08:30,233 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 [2021-11-06 19:08:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-06 19:08:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-06 19:08:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 19:08:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-06 19:08:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-06 19:08:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 19:08:30,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:08:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:08:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:08:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:09:16,186 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:09:16,186 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:09:16,187 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:09:16,187 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:09:16,189 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:09:16,191 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:09:16,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:09:16,251 INFO L299 CfgBuilder]: Removed 15179 assume(true) statements. [2021-11-06 19:09:16,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:16 BoogieIcfgContainer [2021-11-06 19:09:16,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:09:16,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:09:16,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:09:16,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:09:16,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:08:20" (1/3) ... [2021-11-06 19:09:16,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e41fffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:16, skipping insertion in model container [2021-11-06 19:09:16,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:08:25" (2/3) ... [2021-11-06 19:09:16,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e41fffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:16, skipping insertion in model container [2021-11-06 19:09:16,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:16" (3/3) ... [2021-11-06 19:09:16,274 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-06 19:09:16,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:09:16,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 208 error locations. [2021-11-06 19:09:16,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:09:16,373 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 [2021-11-06 19:09:16,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 208 error locations. [2021-11-06 19:09:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 14955 states, 14679 states have (on average 1.354520062674569) internal successors, (19883), 14886 states have internal predecessors, (19883), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-06 19:09:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 19:09:16,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:09:16,563 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] [2021-11-06 19:09:16,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-06 19:09:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:09:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 607482254, now seen corresponding path program 1 times [2021-11-06 19:09:16,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:09:16,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369849851] [2021-11-06 19:09:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:09:16,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:09:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:09:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:09:17,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:09:17,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369849851] [2021-11-06 19:09:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369849851] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:09:17,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:09:17,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:09:17,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156488958] [2021-11-06 19:09:17,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:09:17,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:09:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:09:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:09:17,620 INFO L87 Difference]: Start difference. First operand has 14955 states, 14679 states have (on average 1.354520062674569) internal successors, (19883), 14886 states have internal predecessors, (19883), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-06 19:09:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:09:21,077 INFO L93 Difference]: Finished difference Result 43515 states and 58450 transitions. [2021-11-06 19:09:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:09:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-06 19:09:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:09:21,251 INFO L225 Difference]: With dead ends: 43515 [2021-11-06 19:09:21,252 INFO L226 Difference]: Without dead ends: 27677 [2021-11-06 19:09:21,312 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 [2021-11-06 19:09:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27677 states. [2021-11-06 19:09:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27677 to 26844. [2021-11-06 19:09:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26844 states, 26500 states have (on average 1.254301886792453) internal successors, (33239), 26707 states have internal predecessors, (33239), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-06 19:09:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26844 states to 26844 states and 33503 transitions. [2021-11-06 19:09:22,297 INFO L78 Accepts]: Start accepts. Automaton has 26844 states and 33503 transitions. Word has length 33 [2021-11-06 19:09:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:09:22,299 INFO L470 AbstractCegarLoop]: Abstraction has 26844 states and 33503 transitions. [2021-11-06 19:09:22,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-11-06 19:09:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 26844 states and 33503 transitions. [2021-11-06 19:09:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 19:09:22,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:09:22,307 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] [2021-11-06 19:09:22,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:09:22,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-06 19:09:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:09:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1083935826, now seen corresponding path program 1 times [2021-11-06 19:09:22,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:09:22,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885971338] [2021-11-06 19:09:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:09:22,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:09:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:09:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:09:22,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:09:22,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885971338] [2021-11-06 19:09:22,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885971338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:09:22,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:09:22,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:09:22,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093682663] [2021-11-06 19:09:22,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:09:22,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:09:22,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:09:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:09:22,815 INFO L87 Difference]: Start difference. First operand 26844 states and 33503 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-06 19:09:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:09:26,269 INFO L93 Difference]: Finished difference Result 80164 states and 100110 transitions. [2021-11-06 19:09:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:09:26,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-06 19:09:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:09:26,757 INFO L225 Difference]: With dead ends: 80164 [2021-11-06 19:09:26,757 INFO L226 Difference]: Without dead ends: 53372 [2021-11-06 19:09:26,812 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 [2021-11-06 19:09:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53372 states. [2021-11-06 19:09:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53372 to 53028. [2021-11-06 19:09:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53028 states, 52548 states have (on average 1.2550620385171654) internal successors, (65951), 52755 states have internal predecessors, (65951), 264 states have call successors, (264), 8 states have call predecessors, (264), 8 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-06 19:09:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53028 states to 53028 states and 66479 transitions. [2021-11-06 19:09:28,513 INFO L78 Accepts]: Start accepts. Automaton has 53028 states and 66479 transitions. Word has length 37 [2021-11-06 19:09:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:09:28,524 INFO L470 AbstractCegarLoop]: Abstraction has 53028 states and 66479 transitions. [2021-11-06 19:09:28,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-11-06 19:09:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 53028 states and 66479 transitions. [2021-11-06 19:09:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 19:09:28,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:09:28,527 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] [2021-11-06 19:09:28,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:09:28,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-06 19:09:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:09:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash 801056305, now seen corresponding path program 1 times [2021-11-06 19:09:28,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:09:28,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512717845] [2021-11-06 19:09:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:09:28,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:09:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:09:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:09:28,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:09:28,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512717845] [2021-11-06 19:09:28,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512717845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:09:28,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:09:28,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:09:28,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309361351] [2021-11-06 19:09:28,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:09:28,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:09:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:09:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:09:28,943 INFO L87 Difference]: Start difference. First operand 53028 states and 66479 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-06 19:09:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:09:32,850 INFO L93 Difference]: Finished difference Result 140822 states and 176364 transitions. [2021-11-06 19:09:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:09:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-06 19:09:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:09:33,163 INFO L225 Difference]: With dead ends: 140822 [2021-11-06 19:09:33,164 INFO L226 Difference]: Without dead ends: 87846 [2021-11-06 19:09:33,286 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 [2021-11-06 19:09:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87846 states. [2021-11-06 19:09:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87846 to 86936. [2021-11-06 19:09:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86936 states, 86292 states have (on average 1.2538010476058035) internal successors, (108193), 86499 states have internal predecessors, (108193), 420 states have call successors, (420), 16 states have call predecessors, (420), 16 states have return successors, (420), 420 states have call predecessors, (420), 420 states have call successors, (420) [2021-11-06 19:09:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86936 states to 86936 states and 109033 transitions. [2021-11-06 19:09:35,759 INFO L78 Accepts]: Start accepts. Automaton has 86936 states and 109033 transitions. Word has length 40 [2021-11-06 19:09:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:09:35,759 INFO L470 AbstractCegarLoop]: Abstraction has 86936 states and 109033 transitions. [2021-11-06 19:09:35,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-06 19:09:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 86936 states and 109033 transitions. [2021-11-06 19:09:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 19:09:35,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:09:35,766 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:09:35,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:09:35,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-06 19:09:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:09:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1964916975, now seen corresponding path program 1 times [2021-11-06 19:09:35,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:09:35,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660529140] [2021-11-06 19:09:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:09:35,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:09:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:09:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:09:36,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:09:36,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660529140] [2021-11-06 19:09:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660529140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:09:36,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:09:36,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:09:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868093487] [2021-11-06 19:09:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:09:36,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:09:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:09:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:09:36,251 INFO L87 Difference]: Start difference. First operand 86936 states and 109033 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-06 19:09:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:09:40,524 INFO L93 Difference]: Finished difference Result 174156 states and 218192 transitions. [2021-11-06 19:09:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:09:40,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-06 19:09:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:09:40,968 INFO L225 Difference]: With dead ends: 174156 [2021-11-06 19:09:40,968 INFO L226 Difference]: Without dead ends: 130358 [2021-11-06 19:09:41,077 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 [2021-11-06 19:09:41,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130358 states. [2021-11-06 19:09:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130358 to 130014. [2021-11-06 19:09:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130014 states, 129152 states have (on average 1.2539333498513379) internal successors, (161948), 129359 states have internal predecessors, (161948), 630 states have call successors, (630), 24 states have call predecessors, (630), 24 states have return successors, (630), 630 states have call predecessors, (630), 630 states have call successors, (630) [2021-11-06 19:09:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130014 states to 130014 states and 163208 transitions. [2021-11-06 19:09:44,542 INFO L78 Accepts]: Start accepts. Automaton has 130014 states and 163208 transitions. Word has length 82 [2021-11-06 19:09:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:09:44,543 INFO L470 AbstractCegarLoop]: Abstraction has 130014 states and 163208 transitions. [2021-11-06 19:09:44,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-06 19:09:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 130014 states and 163208 transitions. [2021-11-06 19:09:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 19:09:44,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:09:44,551 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:09:44,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:09:44,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-06 19:09:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:09:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1308981967, now seen corresponding path program 1 times [2021-11-06 19:09:44,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:09:44,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934501151] [2021-11-06 19:09:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:09:44,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:09:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:09:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:09:45,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:09:45,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934501151] [2021-11-06 19:09:45,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934501151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:09:45,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:09:45,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:09:45,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755024582] [2021-11-06 19:09:45,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:09:45,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:09:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:09:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:09:45,018 INFO L87 Difference]: Start difference. First operand 130014 states and 163208 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-06 19:09:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:09:50,025 INFO L93 Difference]: Finished difference Result 260316 states and 326550 transitions. [2021-11-06 19:09:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:09:50,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-06 19:09:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:09:50,600 INFO L225 Difference]: With dead ends: 260316 [2021-11-06 19:09:50,600 INFO L226 Difference]: Without dead ends: 173440 [2021-11-06 19:09:50,747 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 [2021-11-06 19:09:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173440 states.