./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 02:08:24,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:24,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:25,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:25,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:25,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:25,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:25,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:25,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:25,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:25,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:25,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:25,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:25,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:25,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:25,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:25,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:25,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:25,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:25,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:25,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:25,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:25,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:25,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:25,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:25,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:25,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:25,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:25,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:25,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:25,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:25,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:25,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:25,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:25,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:25,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:25,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:25,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:25,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:25,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:25,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:25,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 02:08:25,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:25,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:25,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:25,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:25,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:08:25,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:08:25,132 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 02:08:25,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:25,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:25,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:25,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:08:25,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:25,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:08:25,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:08:25,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:25,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:08:25,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:25,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:08:25,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 02:08:25,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:08:25,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 02:08:25,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 02:08:25,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:08:25,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:25,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 [2021-11-23 02:08:25,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:25,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:25,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:25,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:25,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:25,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-23 02:08:25,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67ac3ea9/97c8a8386c4749b291c720667c18d38e/FLAG8104b2add [2021-11-23 02:08:26,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:26,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-23 02:08:26,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67ac3ea9/97c8a8386c4749b291c720667c18d38e/FLAG8104b2add [2021-11-23 02:08:26,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67ac3ea9/97c8a8386c4749b291c720667c18d38e [2021-11-23 02:08:26,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:26,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:26,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:26,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:26,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:26,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763e8061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26, skipping insertion in model container [2021-11-23 02:08:26,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:26,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:31,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-23 02:08:31,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-23 02:08:31,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:31,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:08:31,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-23 02:08:31,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-23 02:08:31,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:31,849 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:08:31,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31 WrapperNode [2021-11-23 02:08:31,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:31,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:31,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:08:31,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:08:31,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:32,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:34,480 INFO L137 Inliner]: procedures = 543, calls = 4199, calls flagged for inlining = 1356, calls inlined = 10839, statements flattened = 104145 [2021-11-23 02:08:34,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:34,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:08:34,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:08:34,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:08:34,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:34,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:35,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:35,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:37,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:37,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:37,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:38,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:08:38,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:08:38,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:08:38,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:08:38,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:38,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:38,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 02:08:38,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:08:38,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:08:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-23 02:08:38,637 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-23 02:08:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-23 02:08:38,637 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-23 02:08:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-23 02:08:38,637 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-23 02:08:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:08:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:08:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-23 02:08:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-23 02:08:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:08:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:08:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:08:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:08:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:08:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-23 02:08:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-23 02:08:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:08:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:08:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-23 02:08:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-23 02:08:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:08:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:08:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-23 02:08:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-23 02:08:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-23 02:08:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-23 02:08:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-23 02:08:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-23 02:08:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-23 02:08:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-23 02:08:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:08:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-23 02:08:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-23 02:08:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-23 02:08:38,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-23 02:08:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:08:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-23 02:08:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-23 02:08:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-23 02:08:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-23 02:08:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:08:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-23 02:08:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-23 02:08:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-23 02:08:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-23 02:08:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-23 02:08:38,645 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-23 02:08:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:08:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-23 02:08:38,645 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-23 02:08:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-23 02:08:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-23 02:08:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-23 02:08:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-23 02:08:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:08:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:08:40,702 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:08:40,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:09:17,022 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 02:09:17,022 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 02:09:17,022 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 02:09:17,023 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,023 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,023 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,023 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res#1 := 0; [2021-11-23 02:09:17,027 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:09:17,262 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:09:17,324 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:09:17,324 INFO L301 CfgBuilder]: Removed 154 assume(true) statements. [2021-11-23 02:09:17,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:17 BoogieIcfgContainer [2021-11-23 02:09:17,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:09:17,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:09:17,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:09:17,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:09:17,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:26" (1/3) ... [2021-11-23 02:09:17,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68598846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:17, skipping insertion in model container [2021-11-23 02:09:17,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (2/3) ... [2021-11-23 02:09:17,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68598846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:17, skipping insertion in model container [2021-11-23 02:09:17,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:17" (3/3) ... [2021-11-23 02:09:17,350 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-23 02:09:17,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:09:17,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:09:17,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:09:17,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:09:17,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:09:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 19550 states, 19439 states have (on average 1.2620505170019034) internal successors, (24533), 19441 states have internal predecessors, (24533), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 02:09:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 02:09:17,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:17,986 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] [2021-11-23 02:09:17,986 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:09:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1538611501, now seen corresponding path program 1 times [2021-11-23 02:09:18,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:09:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178174926] [2021-11-23 02:09:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:18,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:18,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:09:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178174926] [2021-11-23 02:09:18,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178174926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:18,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:18,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:18,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850421924] [2021-11-23 02:09:18,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:18,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:18,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:09:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:18,771 INFO L87 Difference]: Start difference. First operand has 19550 states, 19439 states have (on average 1.2620505170019034) internal successors, (24533), 19441 states have internal predecessors, (24533), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:20,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:22,326 INFO L93 Difference]: Finished difference Result 53609 states and 68161 transitions. [2021-11-23 02:09:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:22,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-23 02:09:22,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:22,606 INFO L225 Difference]: With dead ends: 53609 [2021-11-23 02:09:22,606 INFO L226 Difference]: Without dead ends: 33844 [2021-11-23 02:09:22,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:22,854 INFO L933 BasicCegarLoop]: 23860 mSDtfsCounter, 19344 mSDsluCounter, 23671 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19344 SdHoareTripleChecker+Valid, 47531 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:22,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19344 Valid, 47531 Invalid, 94 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:09:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33844 states. [2021-11-23 02:09:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33844 to 33836. [2021-11-23 02:09:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33836 states, 33623 states have (on average 1.2522083097879428) internal successors, (42103), 33625 states have internal predecessors, (42103), 167 states have call successors, (167), 44 states have call predecessors, (167), 44 states have return successors, (167), 167 states have call predecessors, (167), 167 states have call successors, (167) [2021-11-23 02:09:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33836 states to 33836 states and 42437 transitions. [2021-11-23 02:09:24,803 INFO L78 Accepts]: Start accepts. Automaton has 33836 states and 42437 transitions. Word has length 87 [2021-11-23 02:09:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:24,804 INFO L470 AbstractCegarLoop]: Abstraction has 33836 states and 42437 transitions. [2021-11-23 02:09:24,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33836 states and 42437 transitions. [2021-11-23 02:09:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 02:09:24,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:24,827 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:24,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:09:24,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:09:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -301334754, now seen corresponding path program 1 times [2021-11-23 02:09:24,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:09:24,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325620911] [2021-11-23 02:09:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:24,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:25,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:09:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325620911] [2021-11-23 02:09:25,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325620911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:25,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:25,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:25,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63783478] [2021-11-23 02:09:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:25,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:25,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:09:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:25,200 INFO L87 Difference]: Start difference. First operand 33836 states and 42437 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:26,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:28,979 INFO L93 Difference]: Finished difference Result 99909 states and 125603 transitions. [2021-11-23 02:09:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-23 02:09:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:29,448 INFO L225 Difference]: With dead ends: 99909 [2021-11-23 02:09:29,449 INFO L226 Difference]: Without dead ends: 66198 [2021-11-23 02:09:29,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:29,684 INFO L933 BasicCegarLoop]: 23501 mSDtfsCounter, 22648 mSDsluCounter, 23014 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22648 SdHoareTripleChecker+Valid, 46515 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:29,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22648 Valid, 46515 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:09:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66198 states. [2021-11-23 02:09:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66198 to 66041. [2021-11-23 02:09:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66041 states, 65617 states have (on average 1.2520535836749622) internal successors, (82156), 65620 states have internal predecessors, (82156), 334 states have call successors, (334), 88 states have call predecessors, (334), 88 states have return successors, (636), 334 states have call predecessors, (636), 334 states have call successors, (636) [2021-11-23 02:09:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66041 states to 66041 states and 83126 transitions. [2021-11-23 02:09:32,097 INFO L78 Accepts]: Start accepts. Automaton has 66041 states and 83126 transitions. Word has length 95 [2021-11-23 02:09:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:32,099 INFO L470 AbstractCegarLoop]: Abstraction has 66041 states and 83126 transitions. [2021-11-23 02:09:32,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 66041 states and 83126 transitions. [2021-11-23 02:09:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 02:09:32,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:32,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:32,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:09:32,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:09:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1492265701, now seen corresponding path program 1 times [2021-11-23 02:09:32,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:09:32,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954921411] [2021-11-23 02:09:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:32,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:32,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:09:32,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954921411] [2021-11-23 02:09:32,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954921411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:32,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:32,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:32,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383257507] [2021-11-23 02:09:32,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:32,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:32,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:09:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:32,431 INFO L87 Difference]: Start difference. First operand 66041 states and 83126 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:34,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:37,491 INFO L93 Difference]: Finished difference Result 195617 states and 246210 transitions. [2021-11-23 02:09:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-23 02:09:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:38,462 INFO L225 Difference]: With dead ends: 195617 [2021-11-23 02:09:38,463 INFO L226 Difference]: Without dead ends: 129701 [2021-11-23 02:09:39,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:39,180 INFO L933 BasicCegarLoop]: 23421 mSDtfsCounter, 22467 mSDsluCounter, 23299 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22467 SdHoareTripleChecker+Valid, 46720 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:39,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22467 Valid, 46720 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 02:09:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129701 states. [2021-11-23 02:09:42,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129701 to 129693. [2021-11-23 02:09:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129693 states, 128851 states have (on average 1.251600686063748) internal successors, (161270), 128856 states have internal predecessors, (161270), 664 states have call successors, (664), 176 states have call predecessors, (664), 176 states have return successors, (1264), 664 states have call predecessors, (1264), 664 states have call successors, (1264) [2021-11-23 02:09:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129693 states to 129693 states and 163198 transitions. [2021-11-23 02:09:43,553 INFO L78 Accepts]: Start accepts. Automaton has 129693 states and 163198 transitions. Word has length 109 [2021-11-23 02:09:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:43,556 INFO L470 AbstractCegarLoop]: Abstraction has 129693 states and 163198 transitions. [2021-11-23 02:09:43,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 129693 states and 163198 transitions. [2021-11-23 02:09:43,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 02:09:43,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:43,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:43,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:09:43,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:09:43,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -296242954, now seen corresponding path program 1 times [2021-11-23 02:09:43,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 02:09:43,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811984604] [2021-11-23 02:09:43,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:43,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:43,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 02:09:43,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811984604] [2021-11-23 02:09:43,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811984604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:43,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:43,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:43,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013385869] [2021-11-23 02:09:43,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:43,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:09:43,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 02:09:43,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:09:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:09:43,823 INFO L87 Difference]: Start difference. First operand 129693 states and 163198 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:45,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []