./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-wip.dd.seqcomp-5b36d44 [2021-11-07 15:31:16,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:31:16,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:31:16,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:31:16,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:31:16,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:31:16,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:31:16,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:31:16,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:31:16,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:31:16,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:31:16,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:31:16,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:31:16,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:31:16,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:31:16,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:31:16,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:31:16,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:31:16,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:31:16,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:31:16,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:31:16,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:31:16,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:31:16,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:31:16,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:31:16,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:31:16,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:31:16,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:31:16,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:31:16,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:31:16,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:31:16,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:31:16,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:31:16,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:31:16,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:31:16,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:31:16,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:31:16,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:31:16,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:31:16,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:31:16,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:31:16,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:31:16,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:31:16,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:31:16,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:31:16,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:31:16,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:31:16,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:31:16,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:31:16,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:31:16,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:31:16,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:31:16,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:31:16,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:31:16,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:31:16,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2021-11-07 15:31:16,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:31:16,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:31:16,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:31:16,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:31:16,305 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:31:16,306 INFO L432 ainManager$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 [2021-11-07 15:31:16,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daaab2fc6/ed133ea6e0f94b71a6fc72072353dcaf/FLAG3e4488fde [2021-11-07 15:31:17,009 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:31:17,009 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 [2021-11-07 15:31:17,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daaab2fc6/ed133ea6e0f94b71a6fc72072353dcaf/FLAG3e4488fde [2021-11-07 15:31:17,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daaab2fc6/ed133ea6e0f94b71a6fc72072353dcaf [2021-11-07 15:31:17,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:31:17,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:31:17,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:31:17,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:31:17,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:31:17,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:31:17" (1/1) ... [2021-11-07 15:31:17,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bcdc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:17, skipping insertion in model container [2021-11-07 15:31:17,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:31:17" (1/1) ... [2021-11-07 15:31:17,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:31:17,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:31:18,981 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-11-07 15:31:19,022 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 15:31:19,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:31:19,055 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:31:19,363 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-11-07 15:31:19,370 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 15:31:19,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:31:19,420 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:31:19,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19 WrapperNode [2021-11-07 15:31:19,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:31:19,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:31:19,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:31:19,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:31:19,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:19,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:25,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:31:25,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:31:25,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:31:25,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:31:25,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:25,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:27,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:27,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:29,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:29,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:30,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:31,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:31:31,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:31:31,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:31:31,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:31:31,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (1/1) ... [2021-11-07 15:31:31,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:31:31,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:31:31,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 15:31:31,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 15:31:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:31:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:31:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2021-11-07 15:31:31,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2021-11-07 15:31:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:31:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-07 15:31:31,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 15:31:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:31:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:31:31,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:33:07,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:33:07,016 INFO L299 CfgBuilder]: Removed 53006 assume(true) statements. [2021-11-07 15:33:07,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:33:07 BoogieIcfgContainer [2021-11-07 15:33:07,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:33:07,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:33:07,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:33:07,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:33:07,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:31:17" (1/3) ... [2021-11-07 15:33:07,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce9793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:33:07, skipping insertion in model container [2021-11-07 15:33:07,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:31:19" (2/3) ... [2021-11-07 15:33:07,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce9793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:33:07, skipping insertion in model container [2021-11-07 15:33:07,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:33:07" (3/3) ... [2021-11-07 15:33:07,054 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-11-07 15:33:07,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:33:07,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 306 error locations. [2021-11-07 15:33:07,171 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:33:07,177 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 15:33:07,178 INFO L340 AbstractCegarLoop]: Starting to check reachability of 306 error locations. [2021-11-07 15:33:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 39176 states, 38863 states have (on average 1.3737488099220339) internal successors, (53388), 39169 states have internal predecessors, (53388), 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) [2021-11-07 15:33:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 15:33:07,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:07,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:33:07,728 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)] === [2021-11-07 15:33:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1496013384, now seen corresponding path program 1 times [2021-11-07 15:33:07,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:07,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202369209] [2021-11-07 15:33:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:07,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:08,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:08,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202369209] [2021-11-07 15:33:08,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202369209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:08,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:08,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:33:08,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163234876] [2021-11-07 15:33:08,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:33:08,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:33:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:33:08,239 INFO L87 Difference]: Start difference. First operand has 39176 states, 38863 states have (on average 1.3737488099220339) internal successors, (53388), 39169 states have internal predecessors, (53388), 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) [2021-11-07 15:33:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:33:09,138 INFO L93 Difference]: Finished difference Result 78336 states and 106775 transitions. [2021-11-07 15:33:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:33:09,139 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 [2021-11-07 15:33:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:33:09,279 INFO L225 Difference]: With dead ends: 78336 [2021-11-07 15:33:09,279 INFO L226 Difference]: Without dead ends: 38630 [2021-11-07 15:33:09,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:33:09,369 INFO L933 BasicCegarLoop]: 52566 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52566 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:33:09,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52566 Invalid, 0 Unknown, 0 Unchecked, 89.44ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:33:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38630 states. [2021-11-07 15:33:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38630 to 38630. [2021-11-07 15:33:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38630 states, 38318 states have (on average 1.343963672425492) internal successors, (51498), 38623 states have internal predecessors, (51498), 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) [2021-11-07 15:33:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38630 states to 38630 states and 51506 transitions. [2021-11-07 15:33:10,818 INFO L78 Accepts]: Start accepts. Automaton has 38630 states and 51506 transitions. Word has length 52 [2021-11-07 15:33:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:33:10,819 INFO L470 AbstractCegarLoop]: Abstraction has 38630 states and 51506 transitions. [2021-11-07 15:33:10,819 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) [2021-11-07 15:33:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 38630 states and 51506 transitions. [2021-11-07 15:33:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 15:33:10,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:10,823 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] [2021-11-07 15:33:10,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:33:10,823 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)] === [2021-11-07 15:33:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -910194606, now seen corresponding path program 1 times [2021-11-07 15:33:10,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:10,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623152810] [2021-11-07 15:33:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:10,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:11,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:11,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623152810] [2021-11-07 15:33:11,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623152810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:11,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:11,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:33:11,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658384874] [2021-11-07 15:33:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:11,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:33:11,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:33:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:33:11,018 INFO L87 Difference]: Start difference. First operand 38630 states and 51506 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) [2021-11-07 15:33:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:33:12,716 INFO L93 Difference]: Finished difference Result 113383 states and 151142 transitions. [2021-11-07 15:33:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:33:12,717 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 [2021-11-07 15:33:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:33:13,133 INFO L225 Difference]: With dead ends: 113383 [2021-11-07 15:33:13,135 INFO L226 Difference]: Without dead ends: 74788 [2021-11-07 15:33:13,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:33:13,202 INFO L933 BasicCegarLoop]: 51509 mSDtfsCounter, 48199 mSDsluCounter, 51455 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48199 SdHoareTripleChecker+Valid, 102964 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.83ms IncrementalHoareTripleChecker+Time [2021-11-07 15:33:13,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48199 Valid, 102964 Invalid, 14 Unknown, 0 Unchecked, 123.45ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 71.83ms Time] [2021-11-07 15:33:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74788 states. [2021-11-07 15:33:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74788 to 74197. [2021-11-07 15:33:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74197 states, 73879 states have (on average 1.344928870179618) internal successors, (99362), 74184 states have internal predecessors, (99362), 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) [2021-11-07 15:33:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74197 states to 74197 states and 99378 transitions. [2021-11-07 15:33:14,813 INFO L78 Accepts]: Start accepts. Automaton has 74197 states and 99378 transitions. Word has length 52 [2021-11-07 15:33:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:33:14,813 INFO L470 AbstractCegarLoop]: Abstraction has 74197 states and 99378 transitions. [2021-11-07 15:33:14,814 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) [2021-11-07 15:33:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 74197 states and 99378 transitions. [2021-11-07 15:33:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 15:33:14,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:14,816 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] [2021-11-07 15:33:14,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:33:14,816 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)] === [2021-11-07 15:33:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2141946274, now seen corresponding path program 1 times [2021-11-07 15:33:14,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:14,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519950592] [2021-11-07 15:33:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:14,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:14,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:14,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519950592] [2021-11-07 15:33:14,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519950592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:14,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:14,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:33:14,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960588431] [2021-11-07 15:33:14,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:14,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:33:14,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:33:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:33:14,924 INFO L87 Difference]: Start difference. First operand 74197 states and 99378 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) [2021-11-07 15:33:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:33:17,310 INFO L93 Difference]: Finished difference Result 219753 states and 294320 transitions. [2021-11-07 15:33:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:33:17,311 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 [2021-11-07 15:33:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:33:17,712 INFO L225 Difference]: With dead ends: 219753 [2021-11-07 15:33:17,712 INFO L226 Difference]: Without dead ends: 145591 [2021-11-07 15:33:17,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:33:17,845 INFO L933 BasicCegarLoop]: 51505 mSDtfsCounter, 50250 mSDsluCounter, 50726 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50250 SdHoareTripleChecker+Valid, 102231 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.16ms IncrementalHoareTripleChecker+Time [2021-11-07 15:33:17,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50250 Valid, 102231 Invalid, 48 Unknown, 0 Unchecked, 79.15ms Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 80.16ms Time] [2021-11-07 15:33:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145591 states. [2021-11-07 15:33:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145591 to 143623. [2021-11-07 15:33:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143623 states, 143305 states have (on average 1.3451938173825058) internal successors, (192773), 143610 states have internal predecessors, (192773), 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) [2021-11-07 15:33:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143623 states to 143623 states and 192789 transitions. [2021-11-07 15:33:21,381 INFO L78 Accepts]: Start accepts. Automaton has 143623 states and 192789 transitions. Word has length 56 [2021-11-07 15:33:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:33:21,382 INFO L470 AbstractCegarLoop]: Abstraction has 143623 states and 192789 transitions. [2021-11-07 15:33:21,382 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) [2021-11-07 15:33:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 143623 states and 192789 transitions. [2021-11-07 15:33:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 15:33:21,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:21,384 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] [2021-11-07 15:33:21,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:33:21,384 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)] === [2021-11-07 15:33:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2012541692, now seen corresponding path program 1 times [2021-11-07 15:33:21,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:21,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461797235] [2021-11-07 15:33:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:21,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:21,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:21,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461797235] [2021-11-07 15:33:21,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461797235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:21,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:21,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:33:21,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904359715] [2021-11-07 15:33:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:21,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:33:21,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:33:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:33:21,496 INFO L87 Difference]: Start difference. First operand 143623 states and 192789 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) [2021-11-07 15:33:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:33:26,240 INFO L93 Difference]: Finished difference Result 438313 states and 588545 transitions. [2021-11-07 15:33:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:33:26,241 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 [2021-11-07 15:33:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:33:27,089 INFO L225 Difference]: With dead ends: 438313 [2021-11-07 15:33:27,090 INFO L226 Difference]: Without dead ends: 294725 [2021-11-07 15:33:27,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:33:27,613 INFO L933 BasicCegarLoop]: 74534 mSDtfsCounter, 57077 mSDsluCounter, 114782 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57079 SdHoareTripleChecker+Valid, 189316 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 159.27ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.36ms IncrementalHoareTripleChecker+Time [2021-11-07 15:33:27,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57079 Valid, 189316 Invalid, 209 Unknown, 0 Unchecked, 159.27ms Time], IncrementalHoareTripleChecker [69 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 185.36ms Time] [2021-11-07 15:33:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294725 states. [2021-11-07 15:33:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294725 to 159339. [2021-11-07 15:33:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159339 states, 159009 states have (on average 1.3473073851165658) internal successors, (214234), 159314 states have internal predecessors, (214234), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-07 15:33:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159339 states to 159339 states and 214266 transitions. [2021-11-07 15:33:32,178 INFO L78 Accepts]: Start accepts. Automaton has 159339 states and 214266 transitions. Word has length 62 [2021-11-07 15:33:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:33:32,179 INFO L470 AbstractCegarLoop]: Abstraction has 159339 states and 214266 transitions. [2021-11-07 15:33:32,179 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-07 15:33:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 159339 states and 214266 transitions. [2021-11-07 15:33:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 15:33:32,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:32,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:33:32,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:33:32,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr99ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 303 more)] === [2021-11-07 15:33:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2022651676, now seen corresponding path program 1 times [2021-11-07 15:33:32,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:32,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065293428] [2021-11-07 15:33:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:32,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:32,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:32,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065293428] [2021-11-07 15:33:32,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065293428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:32,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:32,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:33:32,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879972318] [2021-11-07 15:33:32,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:32,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:33:32,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:33:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:33:32,379 INFO L87 Difference]: Start difference. First operand 159339 states and 214266 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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)