./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-mutex_drivers-net-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-mutex_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 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 00:13:21,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 00:13:21,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 00:13:21,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 00:13:21,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 00:13:21,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 00:13:21,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 00:13:21,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 00:13:21,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 00:13:21,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 00:13:21,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 00:13:21,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 00:13:21,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 00:13:21,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 00:13:21,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 00:13:21,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 00:13:21,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 00:13:21,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 00:13:21,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 00:13:21,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 00:13:21,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 00:13:21,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 00:13:21,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 00:13:21,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 00:13:21,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 00:13:21,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 00:13:21,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 00:13:21,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 00:13:21,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 00:13:21,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 00:13:21,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 00:13:21,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 00:13:21,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 00:13:21,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 00:13:21,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 00:13:21,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 00:13:21,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 00:13:21,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 00:13:21,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 00:13:21,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 00:13:21,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 00:13:21,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 00:13:21,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 00:13:21,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 00:13:21,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 00:13:21,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 00:13:21,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 00:13:21,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 00:13:21,267 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 00:13:21,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 00:13:21,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 00:13:21,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 00:13:21,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 00:13:21,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 00:13:21,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 00:13:21,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 00:13:21,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:13:21,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 00:13:21,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 00:13:21,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 00:13:21,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 00:13:21,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 00:13:21,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 00:13:21,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 00:13:21,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 00:13:21,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 00:13:21,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 [2021-11-03 00:13:21,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 00:13:21,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 00:13:21,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 00:13:21,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 00:13:21,477 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 00:13:21,478 INFO L432 ainManager$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-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-03 00:13:21,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fadf9eb55/6cac3c52f3794e89a3d9e0378362c9be/FLAG0c71ec1b9 [2021-11-03 00:13:22,254 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 00:13:22,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-03 00:13:22,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fadf9eb55/6cac3c52f3794e89a3d9e0378362c9be/FLAG0c71ec1b9 [2021-11-03 00:13:22,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fadf9eb55/6cac3c52f3794e89a3d9e0378362c9be [2021-11-03 00:13:22,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 00:13:22,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 00:13:22,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 00:13:22,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 00:13:22,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 00:13:22,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:13:22" (1/1) ... [2021-11-03 00:13:22,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb91898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:22, skipping insertion in model container [2021-11-03 00:13:22,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:13:22" (1/1) ... [2021-11-03 00:13:22,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 00:13:22,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 00:13:25,473 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-03 00:13:25,475 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-03 00:13:25,476 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-03 00:13:25,476 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-03 00:13:25,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:13:25,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 00:13:25,922 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-03 00:13:25,923 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-03 00:13:25,924 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-03 00:13:25,924 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-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-03 00:13:25,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:13:26,107 INFO L208 MainTranslator]: Completed translation [2021-11-03 00:13:26,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26 WrapperNode [2021-11-03 00:13:26,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 00:13:26,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 00:13:26,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 00:13:26,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 00:13:26,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:26,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:27,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 00:13:27,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 00:13:27,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 00:13:27,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 00:13:27,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:27,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:28,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:28,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:29,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:29,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:29,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:29,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 00:13:29,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 00:13:29,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 00:13:29,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 00:13:29,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (1/1) ... [2021-11-03 00:13:29,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:13:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 00:13:29,802 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) [2021-11-03 00:13:29,825 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 [2021-11-03 00:13:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-03 00:13:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-03 00:13:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-03 00:13:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-03 00:13:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 00:13:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 00:13:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 00:13:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 00:13:42,754 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 00:13:42,756 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 00:13:42,756 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 00:13:42,756 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 00:13:42,759 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 00:13:42,760 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 00:13:42,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 00:13:42,809 INFO L299 CfgBuilder]: Removed 14751 assume(true) statements. [2021-11-03 00:13:42,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:13:42 BoogieIcfgContainer [2021-11-03 00:13:42,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 00:13:42,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 00:13:42,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 00:13:42,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 00:13:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:13:22" (1/3) ... [2021-11-03 00:13:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c82ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:13:42, skipping insertion in model container [2021-11-03 00:13:42,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:13:26" (2/3) ... [2021-11-03 00:13:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c82ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:13:42, skipping insertion in model container [2021-11-03 00:13:42,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:13:42" (3/3) ... [2021-11-03 00:13:42,827 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-03 00:13:42,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 00:13:42,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 203 error locations. [2021-11-03 00:13:42,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 00:13:42,894 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 [2021-11-03 00:13:42,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 203 error locations. [2021-11-03 00:13:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 14510 states, 14239 states have (on average 1.357609382681368) internal successors, (19331), 14441 states have internal predecessors, (19331), 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) [2021-11-03 00:13:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 00:13:43,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:13:43,037 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] [2021-11-03 00:13:43,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-03 00:13:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:13:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1083935826, now seen corresponding path program 1 times [2021-11-03 00:13:43,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:13:43,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173793329] [2021-11-03 00:13:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:13:43,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:13:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:13:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:13:43,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:13:43,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173793329] [2021-11-03 00:13:43,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173793329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:13:43,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:13:43,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:13:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825683446] [2021-11-03 00:13:43,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:13:43,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:13:43,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:13:43,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:13:43,699 INFO L87 Difference]: Start difference. First operand has 14510 states, 14239 states have (on average 1.357609382681368) internal successors, (19331), 14441 states have internal predecessors, (19331), 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 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) [2021-11-03 00:13:46,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:15:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:15:42,052 INFO L93 Difference]: Finished difference Result 43000 states and 57910 transitions. [2021-11-03 00:15:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:15:42,054 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 [2021-11-03 00:15:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:15:42,160 INFO L225 Difference]: With dead ends: 43000 [2021-11-03 00:15:42,160 INFO L226 Difference]: Without dead ends: 27932 [2021-11-03 00:15:42,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:15:42,192 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 17947 mSDsluCounter, 18096 mSDsCounter, 0 mSdLazyCounter, 35403 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105245.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17947 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 35411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 198.34ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115697.02ms IncrementalHoareTripleChecker+Time [2021-11-03 00:15:42,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17947 Valid, 953 Invalid, 35411 Unknown, 0 Unchecked, 198.34ms Time], IncrementalHoareTripleChecker [7 Valid, 35403 Invalid, 1 Unknown, 0 Unchecked, 115697.02ms Time] [2021-11-03 00:15:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27932 states. [2021-11-03 00:15:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27932 to 27568. [2021-11-03 00:15:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27568 states, 27229 states have (on average 1.263395644349774) internal successors, (34401), 27431 states have internal predecessors, (34401), 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) [2021-11-03 00:15:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27568 states to 27568 states and 34665 transitions. [2021-11-03 00:15:42,848 INFO L78 Accepts]: Start accepts. Automaton has 27568 states and 34665 transitions. Word has length 37 [2021-11-03 00:15:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:15:42,849 INFO L470 AbstractCegarLoop]: Abstraction has 27568 states and 34665 transitions. [2021-11-03 00:15:42,850 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) [2021-11-03 00:15:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 27568 states and 34665 transitions. [2021-11-03 00:15:42,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 00:15:42,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:15:42,857 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] [2021-11-03 00:15:42,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 00:15:42,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr201ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-03 00:15:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:15:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 689155734, now seen corresponding path program 1 times [2021-11-03 00:15:42,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:15:42,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918845825] [2021-11-03 00:15:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:15:42,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:15:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:15:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:15:43,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:15:43,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918845825] [2021-11-03 00:15:43,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918845825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:15:43,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:15:43,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:15:43,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961336701] [2021-11-03 00:15:43,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:15:43,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:15:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:15:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:15:43,273 INFO L87 Difference]: Start difference. First operand 27568 states and 34665 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) [2021-11-03 00:15:44,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:15:46,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:17:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:17:57,144 INFO L93 Difference]: Finished difference Result 69030 states and 86658 transitions. [2021-11-03 00:17:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:17:57,145 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 [2021-11-03 00:17:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:17:57,245 INFO L225 Difference]: With dead ends: 69030 [2021-11-03 00:17:57,246 INFO L226 Difference]: Without dead ends: 41514 [2021-11-03 00:17:57,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:17:57,290 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 17414 mSDsluCounter, 17514 mSDsCounter, 0 mSdLazyCounter, 34803 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116427.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17414 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 34811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 200.81ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34803 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131400.84ms IncrementalHoareTripleChecker+Time [2021-11-03 00:17:57,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17414 Valid, 330 Invalid, 34811 Unknown, 0 Unchecked, 200.81ms Time], IncrementalHoareTripleChecker [7 Valid, 34803 Invalid, 1 Unknown, 0 Unchecked, 131400.84ms Time] [2021-11-03 00:17:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41514 states. [2021-11-03 00:17:57,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41514 to 41048. [2021-11-03 00:17:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41048 states, 40641 states have (on average 1.263797642774538) internal successors, (51362), 40843 states have internal predecessors, (51362), 198 states have call successors, (198), 6 states have call predecessors, (198), 6 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2021-11-03 00:17:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41048 states to 41048 states and 51758 transitions. [2021-11-03 00:17:58,067 INFO L78 Accepts]: Start accepts. Automaton has 41048 states and 51758 transitions. Word has length 37 [2021-11-03 00:17:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:17:58,068 INFO L470 AbstractCegarLoop]: Abstraction has 41048 states and 51758 transitions. [2021-11-03 00:17:58,070 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) [2021-11-03 00:17:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41048 states and 51758 transitions. [2021-11-03 00:17:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 00:17:58,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:17:58,072 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] [2021-11-03 00:17:58,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 00:17:58,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr104ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-03 00:17:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:17:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash -996259079, now seen corresponding path program 1 times [2021-11-03 00:17:58,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:17:58,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408789652] [2021-11-03 00:17:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:17:58,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:17:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:17:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:17:58,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:17:58,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408789652] [2021-11-03 00:17:58,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408789652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:17:58,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:17:58,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 00:17:58,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757123730] [2021-11-03 00:17:58,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 00:17:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:17:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 00:17:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 00:17:58,543 INFO L87 Difference]: Start difference. First operand 41048 states and 51758 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-03 00:18:00,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:18:02,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:21:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:21:29,763 INFO L93 Difference]: Finished difference Result 94589 states and 119462 transitions. [2021-11-03 00:21:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:21:29,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-11-03 00:21:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:21:29,885 INFO L225 Difference]: With dead ends: 94589 [2021-11-03 00:21:29,885 INFO L226 Difference]: Without dead ends: 53593 [2021-11-03 00:21:29,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.11ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 00:21:29,952 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 44424 mSDsluCounter, 35506 mSDsCounter, 0 mSdLazyCounter, 53442 mSolverCounterSat, 219 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182079.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44451 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 53662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 444.73ms SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 53442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207597.24ms IncrementalHoareTripleChecker+Time [2021-11-03 00:21:29,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44451 Valid, 298 Invalid, 53662 Unknown, 0 Unchecked, 444.73ms Time], IncrementalHoareTripleChecker [219 Valid, 53442 Invalid, 1 Unknown, 0 Unchecked, 207597.24ms Time] [2021-11-03 00:21:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53593 states. [2021-11-03 00:21:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53593 to 53205. [2021-11-03 00:21:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53205 states, 52711 states have (on average 1.269450399347385) internal successors, (66914), 52913 states have internal predecessors, (66914), 277 states have call successors, (277), 14 states have call predecessors, (277), 14 states have return successors, (277), 277 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-03 00:21:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53205 states to 53205 states and 67468 transitions. [2021-11-03 00:21:31,019 INFO L78 Accepts]: Start accepts. Automaton has 53205 states and 67468 transitions. Word has length 39 [2021-11-03 00:21:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:21:31,019 INFO L470 AbstractCegarLoop]: Abstraction has 53205 states and 67468 transitions. [2021-11-03 00:21:31,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-03 00:21:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 53205 states and 67468 transitions. [2021-11-03 00:21:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 00:21:31,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:21:31,020 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] [2021-11-03 00:21:31,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 00:21:31,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-03 00:21:31,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:21:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1512098561, now seen corresponding path program 1 times [2021-11-03 00:21:31,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:21:31,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560365679] [2021-11-03 00:21:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:21:31,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:21:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:21:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:21:31,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:21:31,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560365679] [2021-11-03 00:21:31,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560365679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:21:31,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:21:31,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:21:31,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291208485] [2021-11-03 00:21:31,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:21:31,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:21:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:21:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:21:31,409 INFO L87 Difference]: Start difference. First operand 53205 states and 67468 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-03 00:21:33,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:24:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:24:32,958 INFO L93 Difference]: Finished difference Result 123093 states and 155736 transitions. [2021-11-03 00:24:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:24:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-03 00:24:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:24:33,297 INFO L225 Difference]: With dead ends: 123093 [2021-11-03 00:24:33,297 INFO L226 Difference]: Without dead ends: 69940 [2021-11-03 00:24:33,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:24:33,382 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 12018 mSDsluCounter, 16873 mSDsCounter, 0 mSdLazyCounter, 34184 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145844.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12018 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 34197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 214.70ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177782.57ms IncrementalHoareTripleChecker+Time [2021-11-03 00:24:33,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12018 Valid, 303 Invalid, 34197 Unknown, 0 Unchecked, 214.70ms Time], IncrementalHoareTripleChecker [12 Valid, 34184 Invalid, 1 Unknown, 0 Unchecked, 177782.57ms Time] [2021-11-03 00:24:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69940 states. [2021-11-03 00:24:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69940 to 69200. [2021-11-03 00:24:34,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69200 states, 68651 states have (on average 1.2661723791350454) internal successors, (86924), 68853 states have internal predecessors, (86924), 328 states have call successors, (328), 18 states have call predecessors, (328), 18 states have return successors, (328), 328 states have call predecessors, (328), 328 states have call successors, (328) [2021-11-03 00:24:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69200 states to 69200 states and 87580 transitions. [2021-11-03 00:24:34,903 INFO L78 Accepts]: Start accepts. Automaton has 69200 states and 87580 transitions. Word has length 45 [2021-11-03 00:24:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:24:34,904 INFO L470 AbstractCegarLoop]: Abstraction has 69200 states and 87580 transitions. [2021-11-03 00:24:34,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-03 00:24:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 69200 states and 87580 transitions. [2021-11-03 00:24:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 00:24:34,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:24:34,906 INFO L514 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] [2021-11-03 00:24:34,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 00:24:34,906 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 200 more)] === [2021-11-03 00:24:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:24:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2111327557, now seen corresponding path program 1 times [2021-11-03 00:24:34,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:24:34,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733859722] [2021-11-03 00:24:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:24:34,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:24:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:24:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:24:35,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:24:35,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733859722] [2021-11-03 00:24:35,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733859722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:24:35,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:24:35,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:24:35,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353386991] [2021-11-03 00:24:35,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:24:35,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:24:35,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:24:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:24:35,295 INFO L87 Difference]: Start difference. First operand 69200 states and 87580 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) [2021-11-03 00:24:37,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15