./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 5f08f0f0 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-wip.dd.seqcomp-5f08f0f [2021-11-05 16:36:16,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:36:16,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:36:16,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:36:16,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:36:16,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:36:16,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:36:16,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:36:16,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:36:16,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:36:16,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:36:16,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:36:16,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:36:16,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:36:16,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:36:16,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:36:16,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:36:16,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:36:16,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:36:16,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:36:16,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:36:16,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:36:16,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:36:16,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:36:16,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:36:16,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:36:16,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:36:16,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:36:16,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:36:16,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:36:16,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:36:16,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:36:16,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:36:16,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:36:16,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:36:16,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:36:16,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:36:16,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:36:16,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:36:16,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:36:16,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:36:16,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:36:16,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:36:16,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:36:16,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:36:16,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:36:16,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:36:16,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:36:16,212 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:36:16,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:36:16,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:36:16,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:36:16,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:36:16,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:36:16,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:36:16,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:36:16,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:36:16,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:36:16,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:36:16,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:36:16,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:36:16,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:36:16,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:36:16,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:36:16,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:36:16,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:36:16,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:36:16,225 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:36:16,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:36:16,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:36:16,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:36:16,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e008b04b7be5a7eb3cfb5abbdeca875ac459e6636eb5b98613fa9fcb2277a8 [2021-11-05 16:36:16,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:36:16,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:36:16,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:36:16,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:36:16,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:36:16,565 INFO L432 ainManager$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 [2021-11-05 16:36:16,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b796a2335/2071877baf20486090047c91f78e526a/FLAG4d23cfb3e [2021-11-05 16:36:17,431 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:36:17,432 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 [2021-11-05 16:36:17,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b796a2335/2071877baf20486090047c91f78e526a/FLAG4d23cfb3e [2021-11-05 16:36:17,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b796a2335/2071877baf20486090047c91f78e526a [2021-11-05 16:36:17,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:36:17,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:36:17,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:36:17,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:36:17,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:36:17,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:36:17" (1/1) ... [2021-11-05 16:36:17,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c6d230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:17, skipping insertion in model container [2021-11-05 16:36:17,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:36:17" (1/1) ... [2021-11-05 16:36:17,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:36:18,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:36:19,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-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] [2021-11-05 16:36:21,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:36:21,330 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:36:21,457 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-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] [2021-11-05 16:36:21,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:36:22,114 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:36:22,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22 WrapperNode [2021-11-05 16:36:22,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:36:22,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:36:22,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:36:22,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:36:22,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:22,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:28,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:36:28,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:36:28,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:36:28,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:36:28,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:28,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:29,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:29,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:32,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:32,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:33,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:33,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:36:33,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:36:33,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:36:33,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:36:33,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (1/1) ... [2021-11-05 16:36:33,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:36:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:36:33,688 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) [2021-11-05 16:36:33,696 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 [2021-11-05 16:36:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:36:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:36:33,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:36:33,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:36:33,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:36:33,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:36:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 16:42:14,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:42:14,755 INFO L299 CfgBuilder]: Removed 38039 assume(true) statements. [2021-11-05 16:42:14,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:42:14 BoogieIcfgContainer [2021-11-05 16:42:14,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:42:14,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:42:14,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:42:14,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:42:14,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:36:17" (1/3) ... [2021-11-05 16:42:14,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e7cedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:42:14, skipping insertion in model container [2021-11-05 16:42:14,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:36:22" (2/3) ... [2021-11-05 16:42:14,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e7cedd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:42:14, skipping insertion in model container [2021-11-05 16:42:14,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:42:14" (3/3) ... [2021-11-05 16:42:14,791 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 [2021-11-05 16:42:14,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:42:14,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:42:14,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:42:14,920 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 [2021-11-05 16:42:14,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:42:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 35793 states, 35791 states have (on average 1.2844569863932274) internal successors, (45972), 35792 states have internal predecessors, (45972), 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) [2021-11-05 16:42:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 16:42:15,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:42:15,262 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] [2021-11-05 16:42:15,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:42:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:42:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash -721832631, now seen corresponding path program 1 times [2021-11-05 16:42:15,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:42:15,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117240332] [2021-11-05 16:42:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:15,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:42:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:42:16,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:42:16,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117240332] [2021-11-05 16:42:16,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117240332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:42:16,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:42:16,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:42:16,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051369796] [2021-11-05 16:42:16,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:42:16,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:42:16,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:42:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:42:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:16,388 INFO L87 Difference]: Start difference. First operand has 35793 states, 35791 states have (on average 1.2844569863932274) internal successors, (45972), 35792 states have internal predecessors, (45972), 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-05 16:42:18,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:42:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:42:21,312 INFO L93 Difference]: Finished difference Result 107295 states and 137803 transitions. [2021-11-05 16:42:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:42:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-05 16:42:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:42:21,610 INFO L225 Difference]: With dead ends: 107295 [2021-11-05 16:42:21,610 INFO L226 Difference]: Without dead ends: 66937 [2021-11-05 16:42:21,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:21,719 INFO L933 BasicCegarLoop]: 45840 mSDtfsCounter, 45742 mSDsluCounter, 45828 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2296.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45742 SdHoareTripleChecker+Valid, 91668 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 175.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2472.32ms IncrementalHoareTripleChecker+Time [2021-11-05 16:42:21,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45742 Valid, 91668 Invalid, 15 Unknown, 0 Unchecked, 175.80ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2472.32ms Time] [2021-11-05 16:42:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66937 states. [2021-11-05 16:42:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66937 to 66937. [2021-11-05 16:42:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66937 states, 66936 states have (on average 1.2329090474483089) internal successors, (82526), 66936 states have internal predecessors, (82526), 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) [2021-11-05 16:42:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66937 states to 66937 states and 82526 transitions. [2021-11-05 16:42:23,911 INFO L78 Accepts]: Start accepts. Automaton has 66937 states and 82526 transitions. Word has length 32 [2021-11-05 16:42:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:42:23,913 INFO L470 AbstractCegarLoop]: Abstraction has 66937 states and 82526 transitions. [2021-11-05 16:42:23,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-05 16:42:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 66937 states and 82526 transitions. [2021-11-05 16:42:23,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 16:42:23,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:42:23,922 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] [2021-11-05 16:42:23,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:42:23,922 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:42:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:42:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1304946245, now seen corresponding path program 1 times [2021-11-05 16:42:23,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:42:23,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639144794] [2021-11-05 16:42:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:23,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:42:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:42:24,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:42:24,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639144794] [2021-11-05 16:42:24,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639144794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:42:24,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:42:24,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:42:24,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514751808] [2021-11-05 16:42:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:42:24,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:42:24,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:42:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:42:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:42:24,595 INFO L87 Difference]: Start difference. First operand 66937 states and 82526 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-05 16:42:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:42:29,334 INFO L93 Difference]: Finished difference Result 133846 states and 165016 transitions. [2021-11-05 16:42:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:42:29,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-05 16:42:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:42:29,743 INFO L225 Difference]: With dead ends: 133846 [2021-11-05 16:42:29,744 INFO L226 Difference]: Without dead ends: 133840 [2021-11-05 16:42:29,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 217.97ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:42:29,810 INFO L933 BasicCegarLoop]: 41228 mSDtfsCounter, 41268 mSDsluCounter, 123648 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2270.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41268 SdHoareTripleChecker+Valid, 164876 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 161.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2378.83ms IncrementalHoareTripleChecker+Time [2021-11-05 16:42:29,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41268 Valid, 164876 Invalid, 329 Unknown, 0 Unchecked, 161.87ms Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 2378.83ms Time] [2021-11-05 16:42:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133840 states. [2021-11-05 16:42:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133840 to 133712. [2021-11-05 16:42:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133712 states, 133711 states have (on average 1.232875380484777) internal successors, (164849), 133711 states have internal predecessors, (164849), 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) [2021-11-05 16:42:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133712 states to 133712 states and 164849 transitions. [2021-11-05 16:42:32,907 INFO L78 Accepts]: Start accepts. Automaton has 133712 states and 164849 transitions. Word has length 35 [2021-11-05 16:42:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:42:32,908 INFO L470 AbstractCegarLoop]: Abstraction has 133712 states and 164849 transitions. [2021-11-05 16:42:32,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-05 16:42:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 133712 states and 164849 transitions. [2021-11-05 16:42:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-05 16:42:33,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:42:33,010 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] [2021-11-05 16:42:33,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:42:33,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:42:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:42:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 43953112, now seen corresponding path program 1 times [2021-11-05 16:42:33,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:42:33,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082045108] [2021-11-05 16:42:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:42:33,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:42:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:42:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 16:42:33,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:42:33,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082045108] [2021-11-05 16:42:33,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082045108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:42:33,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:42:33,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:42:33,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132690710] [2021-11-05 16:42:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:42:33,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:42:33,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:42:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:42:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:33,893 INFO L87 Difference]: Start difference. First operand 133712 states and 164849 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2021-11-05 16:42:37,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:42:37,868 INFO L93 Difference]: Finished difference Result 369678 states and 456101 transitions. [2021-11-05 16:42:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:42:37,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 154 [2021-11-05 16:42:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:42:38,487 INFO L225 Difference]: With dead ends: 369678 [2021-11-05 16:42:38,487 INFO L226 Difference]: Without dead ends: 235994 [2021-11-05 16:42:38,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:42:38,723 INFO L933 BasicCegarLoop]: 41313 mSDtfsCounter, 31700 mSDsluCounter, 41238 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 395.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31700 SdHoareTripleChecker+Valid, 82551 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 422.27ms IncrementalHoareTripleChecker+Time [2021-11-05 16:42:38,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31700 Valid, 82551 Invalid, 38 Unknown, 0 Unchecked, 57.94ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 422.27ms Time] [2021-11-05 16:42:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235994 states.