./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.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 c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 23:15:49,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:15:49,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:15:49,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:15:49,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:15:49,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:15:49,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:15:49,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:15:49,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:15:49,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:15:49,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:15:49,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:15:49,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:15:49,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:15:49,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:15:49,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:15:49,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:15:49,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:15:49,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:15:49,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:15:49,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:15:49,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:15:49,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:15:49,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:15:49,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:15:49,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:15:49,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:15:49,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:15:49,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:15:49,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:15:49,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:15:49,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:15:49,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:15:49,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:15:49,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:15:49,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:15:49,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:15:49,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:15:49,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:15:49,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:15:49,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:15:49,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 23:15:49,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:15:49,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:15:49,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 23:15:49,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 23:15:49,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:15:49,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:15:49,715 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 23:15:49,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:15:49,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:15:49,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:15:49,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:15:49,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:15:49,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:15:49,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:15:49,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:15:49,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:15:49,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:15:49,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 23:15:49,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 23:15:49,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:15:49,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:15:49,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:15:49,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:15:49,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 23:15:49,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:15:49,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 23:15:49,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 23:15:49,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:15:49,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 23:15:49,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 [2021-11-22 23:15:49,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:15:49,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:15:49,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:15:49,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:15:49,970 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:15:49,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2021-11-22 23:15:50,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a93114/dfbe4caa463443088e0468942e72c4fc/FLAGa7cd3dafa [2021-11-22 23:15:50,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:15:50,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2021-11-22 23:15:50,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a93114/dfbe4caa463443088e0468942e72c4fc/FLAGa7cd3dafa [2021-11-22 23:15:51,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a93114/dfbe4caa463443088e0468942e72c4fc [2021-11-22 23:15:51,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:15:51,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:15:51,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:15:51,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:15:51,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:15:51,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:15:51" (1/1) ... [2021-11-22 23:15:51,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3d5779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:51, skipping insertion in model container [2021-11-22 23:15:51,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:15:51" (1/1) ... [2021-11-22 23:15:51,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:15:51,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:15:52,520 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2021-11-22 23:15:54,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:15:54,470 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:15:54,607 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i[204422,204435] [2021-11-22 23:15:54,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:15:55,054 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:15:55,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55 WrapperNode [2021-11-22 23:15:55,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:15:55,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:15:55,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:15:55,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:15:55,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:15:55,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:15:59,501 INFO L137 Inliner]: procedures = 423, calls = 5945, calls flagged for inlining = 1146, calls inlined = 19003, statements flattened = 221395 [2021-11-22 23:15:59,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:15:59,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:15:59,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:15:59,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:15:59,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:15:59,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:00,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:00,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:02,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:03,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:03,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:03,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:16:03,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:16:03,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:16:03,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:16:04,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (1/1) ... [2021-11-22 23:16:04,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 23:16:04,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 23:16:04,375 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) [2021-11-22 23:16:04,393 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 [2021-11-22 23:16:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-22 23:16:04,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 23:16:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 23:16:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 23:16:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 23:16:04,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:16:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 23:16:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:16:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-22 23:16:05,362 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:16:05,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:17:33,685 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:17:33,786 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:17:33,786 INFO L301 CfgBuilder]: Removed 33 assume(true) statements. [2021-11-22 23:17:33,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:17:33 BoogieIcfgContainer [2021-11-22 23:17:33,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:17:33,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 23:17:33,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 23:17:33,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 23:17:33,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:15:51" (1/3) ... [2021-11-22 23:17:33,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a505e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:17:33, skipping insertion in model container [2021-11-22 23:17:33,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:15:55" (2/3) ... [2021-11-22 23:17:33,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a505e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:17:33, skipping insertion in model container [2021-11-22 23:17:33,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:17:33" (3/3) ... [2021-11-22 23:17:33,829 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--ixgb--ixgb.ko-entry_point.cil.out.i [2021-11-22 23:17:33,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 23:17:33,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 23:17:33,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 23:17:34,004 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 [2021-11-22 23:17:34,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 23:17:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 36943 states, 36941 states have (on average 1.2756016350396577) internal successors, (47122), 36942 states have internal predecessors, (47122), 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) [2021-11-22 23:17:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 23:17:34,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:17:34,439 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] [2021-11-22 23:17:34,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:17:34,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:17:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1739558936, now seen corresponding path program 1 times [2021-11-22 23:17:34,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:17:34,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693980641] [2021-11-22 23:17:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:17:34,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:17:35,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:17:35,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693980641] [2021-11-22 23:17:35,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693980641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:17:35,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:17:35,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:17:35,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252816288] [2021-11-22 23:17:35,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:17:35,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:17:35,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:17:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:17:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:17:35,358 INFO L87 Difference]: Start difference. First operand has 36943 states, 36941 states have (on average 1.2756016350396577) internal successors, (47122), 36942 states have internal predecessors, (47122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-22 23:17:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:17:37,472 INFO L93 Difference]: Finished difference Result 110740 states and 141248 transitions. [2021-11-22 23:17:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:17:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-22 23:17:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:17:38,006 INFO L225 Difference]: With dead ends: 110740 [2021-11-22 23:17:38,007 INFO L226 Difference]: Without dead ends: 69232 [2021-11-22 23:17:38,113 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 [2021-11-22 23:17:38,118 INFO L933 BasicCegarLoop]: 46989 mSDtfsCounter, 46888 mSDsluCounter, 46977 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46888 SdHoareTripleChecker+Valid, 93966 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 23:17:38,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46888 Valid, 93966 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 23:17:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69232 states. [2021-11-22 23:17:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69232 to 69232. [2021-11-22 23:17:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69232 states, 69231 states have (on average 1.2251881382617613) internal successors, (84821), 69231 states have internal predecessors, (84821), 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) [2021-11-22 23:17:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69232 states to 69232 states and 84821 transitions. [2021-11-22 23:17:39,980 INFO L78 Accepts]: Start accepts. Automaton has 69232 states and 84821 transitions. Word has length 34 [2021-11-22 23:17:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:17:39,981 INFO L470 AbstractCegarLoop]: Abstraction has 69232 states and 84821 transitions. [2021-11-22 23:17:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-22 23:17:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 69232 states and 84821 transitions. [2021-11-22 23:17:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 23:17:39,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:17:39,990 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] [2021-11-22 23:17:39,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 23:17:39,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:17:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:17:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1075639419, now seen corresponding path program 1 times [2021-11-22 23:17:39,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:17:39,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673398605] [2021-11-22 23:17:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:17:39,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:17:40,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:17:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673398605] [2021-11-22 23:17:40,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673398605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:17:40,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:17:40,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 23:17:40,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741566897] [2021-11-22 23:17:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:17:40,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 23:17:40,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:17:40,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 23:17:40,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 23:17:40,665 INFO L87 Difference]: Start difference. First operand 69232 states and 84821 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-11-22 23:17:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:17:43,157 INFO L93 Difference]: Finished difference Result 138435 states and 169605 transitions. [2021-11-22 23:17:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 23:17:43,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2021-11-22 23:17:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:17:43,548 INFO L225 Difference]: With dead ends: 138435 [2021-11-22 23:17:43,548 INFO L226 Difference]: Without dead ends: 138428 [2021-11-22 23:17:43,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 23:17:43,588 INFO L933 BasicCegarLoop]: 42377 mSDtfsCounter, 42416 mSDsluCounter, 127094 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42416 SdHoareTripleChecker+Valid, 169471 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 23:17:43,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42416 Valid, 169471 Invalid, 329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 23:17:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138428 states. [2021-11-22 23:17:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138428 to 138300. [2021-11-22 23:17:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138300 states, 138299 states have (on average 1.225149856470401) internal successors, (169437), 138299 states have internal predecessors, (169437), 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) [2021-11-22 23:17:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138300 states to 138300 states and 169437 transitions. [2021-11-22 23:17:47,182 INFO L78 Accepts]: Start accepts. Automaton has 138300 states and 169437 transitions. Word has length 36 [2021-11-22 23:17:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:17:47,183 INFO L470 AbstractCegarLoop]: Abstraction has 138300 states and 169437 transitions. [2021-11-22 23:17:47,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2021-11-22 23:17:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 138300 states and 169437 transitions. [2021-11-22 23:17:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-22 23:17:47,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:17:47,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:17:47,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 23:17:47,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:17:47,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:17:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash -644460831, now seen corresponding path program 1 times [2021-11-22 23:17:47,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:17:47,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461241394] [2021-11-22 23:17:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:17:47,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:17:47,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:17:47,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461241394] [2021-11-22 23:17:47,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461241394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:17:47,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:17:47,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:17:47,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050342114] [2021-11-22 23:17:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:17:47,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:17:47,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:17:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:17:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:17:47,752 INFO L87 Difference]: Start difference. First operand 138300 states and 169437 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-22 23:17:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 23:17:51,659 INFO L93 Difference]: Finished difference Result 382350 states and 468773 transitions. [2021-11-22 23:17:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 23:17:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 163 [2021-11-22 23:17:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 23:17:52,537 INFO L225 Difference]: With dead ends: 382350 [2021-11-22 23:17:52,537 INFO L226 Difference]: Without dead ends: 244079 [2021-11-22 23:17:52,743 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 [2021-11-22 23:17:52,744 INFO L933 BasicCegarLoop]: 42463 mSDtfsCounter, 32576 mSDsluCounter, 42386 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32576 SdHoareTripleChecker+Valid, 84849 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 23:17:52,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32576 Valid, 84849 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 23:17:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244079 states. [2021-11-22 23:17:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244079 to 244008. [2021-11-22 23:17:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244008 states, 244007 states have (on average 1.2265508776387564) internal successors, (299287), 244007 states have internal predecessors, (299287), 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) [2021-11-22 23:17:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244008 states to 244008 states and 299287 transitions. [2021-11-22 23:17:58,051 INFO L78 Accepts]: Start accepts. Automaton has 244008 states and 299287 transitions. Word has length 163 [2021-11-22 23:17:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 23:17:58,052 INFO L470 AbstractCegarLoop]: Abstraction has 244008 states and 299287 transitions. [2021-11-22 23:17:58,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-11-22 23:17:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 244008 states and 299287 transitions. [2021-11-22 23:17:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-22 23:17:58,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 23:17:58,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 23:17:58,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 23:17:58,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 23:17:58,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:17:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1648510920, now seen corresponding path program 1 times [2021-11-22 23:17:58,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 23:17:58,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697172355] [2021-11-22 23:17:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 23:17:58,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 23:17:58,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 23:17:58,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697172355] [2021-11-22 23:17:58,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697172355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 23:17:58,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 23:17:58,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 23:17:58,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350118800] [2021-11-22 23:17:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 23:17:58,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 23:17:58,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 23:17:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 23:17:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 23:17:58,530 INFO L87 Difference]: Start difference. First operand 244008 states and 299287 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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)