./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:14:43,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:14:43,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:14:43,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:14:43,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:14:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:14:43,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:14:43,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:14:43,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:14:43,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:14:43,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:14:43,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:14:43,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:14:43,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:14:43,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:14:43,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:14:43,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:14:43,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:14:43,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:14:43,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:14:43,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:14:43,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:14:43,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:14:43,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:14:43,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:14:43,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:14:43,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:14:43,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:14:43,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:14:43,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:14:43,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:14:43,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:14:43,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:14:43,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:14:43,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:14:43,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:14:43,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:14:43,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:14:43,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:14:43,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:14:43,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:14:43,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:14:43,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:14:43,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:14:43,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:14:43,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:14:43,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:14:43,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:14:43,154 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:14:43,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:14:43,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:14:43,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:14:43,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:14:43,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:14:43,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:14:43,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:14:43,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:14:43,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:14:43,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:14:43,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:14:43,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:14:43,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:14:43,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:14:43,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:14:43,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:14:43,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:14:43,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2021-11-23 01:14:43,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:14:43,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:14:43,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:14:43,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:14:43,393 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:14:43,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-11-23 01:14:43,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcab62a33/f168787a5db84bf592f46951ff57d67f/FLAGa2fe0e4d2 [2021-11-23 01:14:44,058 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:14:44,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-11-23 01:14:44,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcab62a33/f168787a5db84bf592f46951ff57d67f/FLAGa2fe0e4d2 [2021-11-23 01:14:44,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcab62a33/f168787a5db84bf592f46951ff57d67f [2021-11-23 01:14:44,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:14:44,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:14:44,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:14:44,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:14:44,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:14:44,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:14:44" (1/1) ... [2021-11-23 01:14:44,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695cf228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:44, skipping insertion in model container [2021-11-23 01:14:44,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:14:44" (1/1) ... [2021-11-23 01:14:44,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:14:44,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:14:45,838 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-11-23 01:14:45,879 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 01:14:45,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:14:45,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:14:46,234 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-11-23 01:14:46,241 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 01:14:46,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:14:46,292 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:14:46,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46 WrapperNode [2021-11-23 01:14:46,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:14:46,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:14:46,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:14:46,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:14:46,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:46,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:50,478 INFO L137 Inliner]: procedures = 252, calls = 2297, calls flagged for inlining = 695, calls inlined = 26502, statements flattened = 269422 [2021-11-23 01:14:50,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:14:50,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:14:50,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:14:50,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:14:50,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:50,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:51,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:51,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:53,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:54,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:54,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:55,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:14:55,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:14:55,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:14:55,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:14:55,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (1/1) ... [2021-11-23 01:14:55,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:14:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:14:55,749 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) [2021-11-23 01:14:55,755 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 [2021-11-23 01:14:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:14:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2021-11-23 01:14:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:14:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 01:14:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:14:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 01:14:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:14:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:14:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:14:56,484 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:14:56,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:16:29,701 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:16:29,793 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:16:29,793 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 01:16:29,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:16:29 BoogieIcfgContainer [2021-11-23 01:16:29,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:16:29,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:16:29,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:16:29,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:16:29,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:14:44" (1/3) ... [2021-11-23 01:16:29,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56024767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:16:29, skipping insertion in model container [2021-11-23 01:16:29,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:14:46" (2/3) ... [2021-11-23 01:16:29,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56024767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:16:29, skipping insertion in model container [2021-11-23 01:16:29,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:16:29" (3/3) ... [2021-11-23 01:16:29,834 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-11-23 01:16:29,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:16:29,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 306 error locations. [2021-11-23 01:16:29,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:16:29,960 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:16:29,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 306 error locations. [2021-11-23 01:16:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 46131 states, 45818 states have (on average 1.3170151468855036) internal successors, (60343), 46124 states have internal predecessors, (60343), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 01:16:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 01:16:30,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:16:30,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:16:30,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr278ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 303 more)] === [2021-11-23 01:16:30,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:16:30,422 INFO L85 PathProgramCache]: Analyzing trace with hash 475519163, now seen corresponding path program 1 times [2021-11-23 01:16:30,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:16:30,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356402529] [2021-11-23 01:16:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:16:30,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:16:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:16:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:16:30,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:16:30,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356402529] [2021-11-23 01:16:30,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356402529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:16:30,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:16:30,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:16:30,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025723576] [2021-11-23 01:16:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:16:30,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:16:30,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:16:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:16:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:16:30,885 INFO L87 Difference]: Start difference. First operand has 46131 states, 45818 states have (on average 1.3170151468855036) internal successors, (60343), 46124 states have internal predecessors, (60343), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:16:32,571 INFO L93 Difference]: Finished difference Result 91936 states and 120375 transitions. [2021-11-23 01:16:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:16:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2021-11-23 01:16:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:16:32,759 INFO L225 Difference]: With dead ends: 91936 [2021-11-23 01:16:32,760 INFO L226 Difference]: Without dead ends: 45273 [2021-11-23 01:16:32,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:16:32,839 INFO L933 BasicCegarLoop]: 59211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:16:32,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 59211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:16:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45273 states. [2021-11-23 01:16:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45273 to 45273. [2021-11-23 01:16:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45273 states, 44961 states have (on average 1.29314294610885) internal successors, (58141), 45266 states have internal predecessors, (58141), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 01:16:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45273 states to 45273 states and 58149 transitions. [2021-11-23 01:16:33,886 INFO L78 Accepts]: Start accepts. Automaton has 45273 states and 58149 transitions. Word has length 52 [2021-11-23 01:16:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:16:33,886 INFO L470 AbstractCegarLoop]: Abstraction has 45273 states and 58149 transitions. [2021-11-23 01:16:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 45273 states and 58149 transitions. [2021-11-23 01:16:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 01:16:33,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:16:33,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:16:33,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:16:33,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr278ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 303 more)] === [2021-11-23 01:16:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:16:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1930688827, now seen corresponding path program 1 times [2021-11-23 01:16:33,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:16:33,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363131806] [2021-11-23 01:16:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:16:33,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:16:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:16:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:16:34,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:16:34,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363131806] [2021-11-23 01:16:34,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363131806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:16:34,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:16:34,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:16:34,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398977393] [2021-11-23 01:16:34,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:16:34,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:16:34,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:16:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:16:34,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:16:34,256 INFO L87 Difference]: Start difference. First operand 45273 states and 58149 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:16:36,527 INFO L93 Difference]: Finished difference Result 132935 states and 170694 transitions. [2021-11-23 01:16:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:16:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-23 01:16:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:16:36,746 INFO L225 Difference]: With dead ends: 132935 [2021-11-23 01:16:36,747 INFO L226 Difference]: Without dead ends: 87697 [2021-11-23 01:16:36,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:16:36,858 INFO L933 BasicCegarLoop]: 58152 mSDtfsCounter, 54465 mSDsluCounter, 58098 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54465 SdHoareTripleChecker+Valid, 116250 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:16:36,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54465 Valid, 116250 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:16:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87697 states. [2021-11-23 01:16:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87697 to 87106. [2021-11-23 01:16:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87106 states, 86788 states have (on average 1.29362354242522) internal successors, (112271), 87093 states have internal predecessors, (112271), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 01:16:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87106 states to 87106 states and 112287 transitions. [2021-11-23 01:16:38,833 INFO L78 Accepts]: Start accepts. Automaton has 87106 states and 112287 transitions. Word has length 52 [2021-11-23 01:16:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:16:38,838 INFO L470 AbstractCegarLoop]: Abstraction has 87106 states and 112287 transitions. [2021-11-23 01:16:38,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 87106 states and 112287 transitions. [2021-11-23 01:16:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 01:16:38,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:16:38,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:16:38,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:16:38,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ns_ioctlErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 303 more)] === [2021-11-23 01:16:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:16:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2062270977, now seen corresponding path program 1 times [2021-11-23 01:16:38,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:16:38,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198322156] [2021-11-23 01:16:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:16:38,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:16:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:16:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:16:38,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:16:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198322156] [2021-11-23 01:16:38,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198322156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:16:38,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:16:38,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:16:38,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106201070] [2021-11-23 01:16:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:16:38,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:16:38,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:16:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:16:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:16:38,984 INFO L87 Difference]: Start difference. First operand 87106 states and 112287 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:16:41,840 INFO L93 Difference]: Finished difference Result 257971 states and 332538 transitions. [2021-11-23 01:16:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:16:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-23 01:16:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:16:42,370 INFO L225 Difference]: With dead ends: 257971 [2021-11-23 01:16:42,371 INFO L226 Difference]: Without dead ends: 170900 [2021-11-23 01:16:42,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:16:42,515 INFO L933 BasicCegarLoop]: 58148 mSDtfsCounter, 56710 mSDsluCounter, 57289 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56710 SdHoareTripleChecker+Valid, 115437 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:16:42,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56710 Valid, 115437 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:16:42,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170900 states. [2021-11-23 01:16:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170900 to 168743. [2021-11-23 01:16:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168743 states, 168425 states have (on average 1.29370936618673) internal successors, (217893), 168730 states have internal predecessors, (217893), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 01:16:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168743 states to 168743 states and 217909 transitions. [2021-11-23 01:16:46,489 INFO L78 Accepts]: Start accepts. Automaton has 168743 states and 217909 transitions. Word has length 56 [2021-11-23 01:16:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:16:46,489 INFO L470 AbstractCegarLoop]: Abstraction has 168743 states and 217909 transitions. [2021-11-23 01:16:46,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 168743 states and 217909 transitions. [2021-11-23 01:16:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 01:16:46,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:16:46,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:16:46,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:16:46,492 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 303 more)] === [2021-11-23 01:16:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:16:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1486096443, now seen corresponding path program 1 times [2021-11-23 01:16:46,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:16:46,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175816509] [2021-11-23 01:16:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:16:46,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:16:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:16:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:16:46,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:16:46,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175816509] [2021-11-23 01:16:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175816509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:16:46,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:16:46,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:16:46,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421849801] [2021-11-23 01:16:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:16:46,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:16:46,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:16:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:16:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:16:46,606 INFO L87 Difference]: Start difference. First operand 168743 states and 217909 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:16:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:16:52,595 INFO L93 Difference]: Finished difference Result 514859 states and 665091 transitions. [2021-11-23 01:16:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:16:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-23 01:16:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:16:53,592 INFO L225 Difference]: With dead ends: 514859 [2021-11-23 01:16:53,592 INFO L226 Difference]: Without dead ends: 346151 [2021-11-23 01:16:53,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:16:53,878 INFO L933 BasicCegarLoop]: 84102 mSDtfsCounter, 64440 mSDsluCounter, 129619 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64442 SdHoareTripleChecker+Valid, 213721 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:16:53,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64442 Valid, 213721 Invalid, 209 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:16:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346151 states.