./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 03:04:01,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:04:01,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:04:01,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:04:01,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:04:01,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:04:01,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:04:01,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:04:01,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:04:01,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:04:01,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:04:01,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:04:01,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:04:01,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:04:01,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:04:01,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:04:01,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:04:01,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:04:01,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:04:01,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:04:01,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:04:01,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:04:01,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:04:01,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:04:01,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:04:01,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:04:01,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:04:01,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:04:01,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:04:01,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:04:01,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:04:01,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:04:01,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:04:01,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:04:01,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:04:01,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:04:01,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:04:01,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:04:01,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:04:01,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:04:01,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:04:01,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 03:04:01,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:04:01,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:04:01,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 03:04:01,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 03:04:01,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:04:01,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:04:02,000 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 03:04:02,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:04:02,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:04:02,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:04:02,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:04:02,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:04:02,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:04:02,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:04:02,001 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:04:02,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:04:02,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:04:02,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:04:02,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:04:02,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:04:02,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 03:04:02,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 03:04:02,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:04:02,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:04:02,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 [2021-11-03 03:04:02,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:04:02,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:04:02,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:04:02,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:04:02,229 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:04:02,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 03:04:02,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81646906e/4a67263ea1ab43128ee3742d872c6aed/FLAGf4a3351af [2021-11-03 03:04:02,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:04:02,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 03:04:02,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81646906e/4a67263ea1ab43128ee3742d872c6aed/FLAGf4a3351af [2021-11-03 03:04:03,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81646906e/4a67263ea1ab43128ee3742d872c6aed [2021-11-03 03:04:03,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:04:03,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:04:03,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:04:03,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:04:03,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:04:03,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:04:03" (1/1) ... [2021-11-03 03:04:03,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776d452e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:03, skipping insertion in model container [2021-11-03 03:04:03,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:04:03" (1/1) ... [2021-11-03 03:04:03,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:04:03,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:04:06,185 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2021-11-03 03:04:06,191 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2021-11-03 03:04:06,192 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2021-11-03 03:04:06,193 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2021-11-03 03:04:06,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:04:06,258 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:04:06,648 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2021-11-03 03:04:06,649 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2021-11-03 03:04:06,649 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2021-11-03 03:04:06,650 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-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2021-11-03 03:04:06,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:04:06,848 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:04:06,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06 WrapperNode [2021-11-03 03:04:06,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:04:06,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:04:06,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:04:06,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:04:06,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:06,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:15,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:04:15,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:04:15,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:04:15,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:04:15,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:15,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:17,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:17,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:19,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:20,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:20,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:22,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:04:22,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:04:22,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:04:22,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:04:22,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (1/1) ... [2021-11-03 03:04:22,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:04:22,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 03:04:22,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:04:22,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:04:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:04:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-03 03:04:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:04:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 03:04:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:04:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:04:38,597 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-03 03:04:38,597 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-03 03:04:38,597 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-03 03:04:38,598 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-03 03:04:38,599 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 03:04:38,599 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 03:04:38,600 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-03 03:04:38,600 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 03:04:38,600 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 03:04:38,600 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 03:04:38,604 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 03:04:38,618 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-03 03:04:38,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:04:38,980 INFO L299 CfgBuilder]: Removed 77872 assume(true) statements. [2021-11-03 03:04:39,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:04:39 BoogieIcfgContainer [2021-11-03 03:04:39,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:04:39,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:04:39,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:04:39,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:04:39,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:04:03" (1/3) ... [2021-11-03 03:04:39,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c482f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:04:39, skipping insertion in model container [2021-11-03 03:04:39,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:04:06" (2/3) ... [2021-11-03 03:04:39,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c482f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:04:39, skipping insertion in model container [2021-11-03 03:04:39,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:04:39" (3/3) ... [2021-11-03 03:04:39,031 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-03 03:04:39,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:04:39,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 03:04:39,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:04:39,180 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:04:39,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 03:04:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 57290 states, 57285 states have (on average 1.2588984900061098) internal successors, (72116), 57289 states have internal predecessors, (72116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:04:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 03:04:39,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:04:39,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:04:39,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:04:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:04:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash -746839052, now seen corresponding path program 1 times [2021-11-03 03:04:39,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:04:39,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213811178] [2021-11-03 03:04:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:04:39,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:04:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:04:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:04:40,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:04:40,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213811178] [2021-11-03 03:04:40,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213811178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:04:40,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:04:40,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:04:40,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610087758] [2021-11-03 03:04:40,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:04:40,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:04:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:04:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:04:40,486 INFO L87 Difference]: Start difference. First operand has 57290 states, 57285 states have (on average 1.2588984900061098) internal successors, (72116), 57289 states have internal predecessors, (72116), 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 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:05:08,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:05:44,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:06:02,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:07:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:07:19,538 INFO L93 Difference]: Finished difference Result 169050 states and 211931 transitions. [2021-11-03 03:07:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:07:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-03 03:07:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:07:20,067 INFO L225 Difference]: With dead ends: 169050 [2021-11-03 03:07:20,067 INFO L226 Difference]: Without dead ends: 110356 [2021-11-03 03:07:20,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:07:20,203 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 69016 mSDsluCounter, 69244 mSDsCounter, 0 mSdLazyCounter, 136952 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127758.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69016 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 136959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 196.90ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155203.34ms IncrementalHoareTripleChecker+Time [2021-11-03 03:07:20,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69016 Valid, 1611 Invalid, 136959 Unknown, 0 Unchecked, 196.90ms Time], IncrementalHoareTripleChecker [6 Valid, 136952 Invalid, 1 Unknown, 0 Unchecked, 155203.34ms Time] [2021-11-03 03:07:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110356 states. [2021-11-03 03:07:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110356 to 110348. [2021-11-03 03:07:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110348 states, 110343 states have (on average 1.2247627851336287) internal successors, (135144), 110347 states have internal predecessors, (135144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:07:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110348 states to 110348 states and 135144 transitions. [2021-11-03 03:07:22,951 INFO L78 Accepts]: Start accepts. Automaton has 110348 states and 135144 transitions. Word has length 66 [2021-11-03 03:07:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:07:22,952 INFO L470 AbstractCegarLoop]: Abstraction has 110348 states and 135144 transitions. [2021-11-03 03:07:22,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:07:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 110348 states and 135144 transitions. [2021-11-03 03:07:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 03:07:22,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:07:22,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:07:22,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:07:22,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:07:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:07:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -597713067, now seen corresponding path program 1 times [2021-11-03 03:07:22,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:07:22,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784537444] [2021-11-03 03:07:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:07:22,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:07:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:07:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:07:23,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:07:23,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784537444] [2021-11-03 03:07:23,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784537444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:07:23,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:07:23,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:07:23,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461613200] [2021-11-03 03:07:23,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:07:23,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:07:23,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:07:23,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:07:23,259 INFO L87 Difference]: Start difference. First operand 110348 states and 135144 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:08:09,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:09:00,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:09:18,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:11:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:11:48,434 INFO L93 Difference]: Finished difference Result 311479 states and 381510 transitions. [2021-11-03 03:11:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:11:48,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-03 03:11:48,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:11:49,030 INFO L225 Difference]: With dead ends: 311479 [2021-11-03 03:11:49,030 INFO L226 Difference]: Without dead ends: 201263 [2021-11-03 03:11:49,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:11:49,231 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55680 mSDsluCounter, 67607 mSDsCounter, 0 mSdLazyCounter, 135351 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215058.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55680 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 229.77ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 135351 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259371.74ms IncrementalHoareTripleChecker+Time [2021-11-03 03:11:49,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55680 Valid, 0 Invalid, 135375 Unknown, 0 Unchecked, 229.77ms Time], IncrementalHoareTripleChecker [21 Valid, 135351 Invalid, 3 Unknown, 0 Unchecked, 259371.74ms Time] [2021-11-03 03:11:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201263 states. [2021-11-03 03:11:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201263 to 201031. [2021-11-03 03:11:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201031 states, 201026 states have (on average 1.2249758737675724) internal successors, (246252), 201030 states have internal predecessors, (246252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:11:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201031 states to 201031 states and 246252 transitions. [2021-11-03 03:11:53,718 INFO L78 Accepts]: Start accepts. Automaton has 201031 states and 246252 transitions. Word has length 84 [2021-11-03 03:11:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:11:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 201031 states and 246252 transitions. [2021-11-03 03:11:53,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:11:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 201031 states and 246252 transitions. [2021-11-03 03:11:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 03:11:53,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:11:53,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:11:53,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:11:53,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 03:11:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:11:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1751852312, now seen corresponding path program 1 times [2021-11-03 03:11:53,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:11:53,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061572443] [2021-11-03 03:11:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:11:53,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:11:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:11:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:11:53,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:11:53,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061572443] [2021-11-03 03:11:53,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061572443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:11:53,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:11:53,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:11:53,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774534270] [2021-11-03 03:11:53,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:11:53,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:11:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:11:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:11:53,956 INFO L87 Difference]: Start difference. First operand 201031 states and 246252 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:14:13,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:14:30,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:14:46,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []