./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 173e3943 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-173e394 [2021-11-06 18:09:30,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:09:30,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:09:30,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:09:30,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:09:30,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:09:30,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:09:30,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:09:30,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:09:30,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:09:30,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:09:30,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:09:30,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:09:30,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:09:30,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:09:30,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:09:30,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:09:30,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:09:30,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:09:31,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:09:31,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:09:31,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:09:31,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:09:31,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:09:31,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:09:31,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:09:31,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:09:31,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:09:31,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:09:31,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:09:31,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:09:31,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:09:31,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:09:31,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:09:31,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:09:31,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:09:31,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:09:31,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:09:31,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:09:31,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:09:31,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:09:31,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:09:31,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:09:31,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:09:31,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:09:31,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:09:31,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:09:31,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:09:31,028 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:09:31,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:09:31,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:09:31,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:09:31,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:09:31,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:09:31,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:09:31,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:09:31,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:09:31,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:09:31,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:09:31,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:09:31,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:09:31,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:09:31,033 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:09:31,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:09:31,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:09:31,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:09:31,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45acb2c796116b4df93c0e090b1e242e2e986b4d7b1240180279cd2f8660db26 [2021-11-06 18:09:31,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:09:31,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:09:31,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:09:31,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:09:31,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:09:31,251 INFO L432 ainManager$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 [2021-11-06 18:09:31,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ef50aa6/4f436d3a45364777a4386ab0612d674a/FLAGbbaa74eb7 [2021-11-06 18:09:31,888 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:09:31,889 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 [2021-11-06 18:09:31,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ef50aa6/4f436d3a45364777a4386ab0612d674a/FLAGbbaa74eb7 [2021-11-06 18:09:32,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ef50aa6/4f436d3a45364777a4386ab0612d674a [2021-11-06 18:09:32,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:09:32,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:09:32,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:09:32,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:09:32,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:09:32,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:09:32" (1/1) ... [2021-11-06 18:09:32,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5c6fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:32, skipping insertion in model container [2021-11-06 18:09:32,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:09:32" (1/1) ... [2021-11-06 18:09:32,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:09:32,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:09:34,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-06 18:09:34,935 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-06 18:09:34,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:09:34,995 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:09:35,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480731,480744] [2021-11-06 18:09:35,313 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[480876,480889] [2021-11-06 18:09:35,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:09:35,465 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:09:35,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35 WrapperNode [2021-11-06 18:09:35,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:09:35,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:09:35,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:09:35,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:09:35,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:35,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:37,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:09:37,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:09:37,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:09:37,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:09:37,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:37,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:38,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:38,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:39,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:39,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:39,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:40,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:09:40,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:09:40,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:09:40,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:09:40,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (1/1) ... [2021-11-06 18:09:40,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:09:40,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:09:40,136 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) [2021-11-06 18:09:40,186 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 [2021-11-06 18:09:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-06 18:09:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-06 18:09:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-06 18:09:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-06 18:09:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-06 18:09:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-06 18:09:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-06 18:09:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-06 18:09:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-06 18:09:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:09:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:09:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 18:09:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 18:09:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-06 18:09:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-06 18:09:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:09:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:09:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-06 18:09:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-06 18:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-06 18:09:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-06 18:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-06 18:09:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-06 18:09:40,203 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-06 18:09:40,203 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-06 18:09:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-06 18:09:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-06 18:09:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:09:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-06 18:09:40,204 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-06 18:09:40,204 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-06 18:09:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-06 18:09:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:09:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-06 18:09:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-06 18:09:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 18:09:40,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 18:09:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:09:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-06 18:09:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-06 18:09:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-06 18:09:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-06 18:09:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-06 18:09:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-06 18:09:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:09:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-06 18:09:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-06 18:09:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-06 18:09:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-06 18:09:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-06 18:09:40,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-06 18:09:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:09:40,209 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 18:10:44,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:10:44,689 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,690 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:10:44,691 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:10:44,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:10:44,956 INFO L299 CfgBuilder]: Removed 21830 assume(true) statements. [2021-11-06 18:10:44,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:10:44 BoogieIcfgContainer [2021-11-06 18:10:44,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:10:44,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:10:44,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:10:44,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:10:44,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:09:32" (1/3) ... [2021-11-06 18:10:44,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cd2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:10:44, skipping insertion in model container [2021-11-06 18:10:44,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:09:35" (2/3) ... [2021-11-06 18:10:44,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cd2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:10:44, skipping insertion in model container [2021-11-06 18:10:44,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:10:44" (3/3) ... [2021-11-06 18:10:44,971 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-06 18:10:44,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:10:44,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 18:10:45,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:10:45,040 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 [2021-11-06 18:10:45,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 18:10:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 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) [2021-11-06 18:10:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 18:10:45,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:45,210 INFO L513 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] [2021-11-06 18:10:45,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 18:10:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1054011777, now seen corresponding path program 1 times [2021-11-06 18:10:45,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:45,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364703238] [2021-11-06 18:10:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:45,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:10:45,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:45,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364703238] [2021-11-06 18:10:45,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364703238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:45,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:45,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:45,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831493558] [2021-11-06 18:10:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:45,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:45,969 INFO L87 Difference]: Start difference. First operand has 17632 states, 17521 states have (on average 1.2907368300896067) internal successors, (22615), 17523 states have internal predecessors, (22615), 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 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-06 18:10:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:49,181 INFO L93 Difference]: Finished difference Result 48591 states and 63143 transitions. [2021-11-06 18:10:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:49,182 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), 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 86 [2021-11-06 18:10:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:49,356 INFO L225 Difference]: With dead ends: 48591 [2021-11-06 18:10:49,356 INFO L226 Difference]: Without dead ends: 30778 [2021-11-06 18:10:49,543 INFO L786 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 [2021-11-06 18:10:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30778 states. [2021-11-06 18:10:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30778 to 30770. [2021-11-06 18:10:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30770 states, 30557 states have (on average 1.2775141538763621) internal successors, (39037), 30559 states have internal predecessors, (39037), 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) [2021-11-06 18:10:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30770 states to 30770 states and 39371 transitions. [2021-11-06 18:10:50,321 INFO L78 Accepts]: Start accepts. Automaton has 30770 states and 39371 transitions. Word has length 86 [2021-11-06 18:10:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:50,327 INFO L470 AbstractCegarLoop]: Abstraction has 30770 states and 39371 transitions. [2021-11-06 18:10:50,328 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), 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) [2021-11-06 18:10:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30770 states and 39371 transitions. [2021-11-06 18:10:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 18:10:50,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:50,343 INFO L513 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] [2021-11-06 18:10:50,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:10:50,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 18:10:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1596591377, now seen corresponding path program 1 times [2021-11-06 18:10:50,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:50,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94820966] [2021-11-06 18:10:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:50,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:10:50,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:50,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94820966] [2021-11-06 18:10:50,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94820966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:50,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:50,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:50,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406565329] [2021-11-06 18:10:50,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:50,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:50,614 INFO L87 Difference]: Start difference. First operand 30770 states and 39371 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-06 18:10:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:10:54,294 INFO L93 Difference]: Finished difference Result 90909 states and 116603 transitions. [2021-11-06 18:10:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:10:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-06 18:10:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:10:54,566 INFO L225 Difference]: With dead ends: 90909 [2021-11-06 18:10:54,566 INFO L226 Difference]: Without dead ends: 60263 [2021-11-06 18:10:54,736 INFO L786 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 [2021-11-06 18:10:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60263 states. [2021-11-06 18:10:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60263 to 60126. [2021-11-06 18:10:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60126 states, 59702 states have (on average 1.27702589527989) internal successors, (76241), 59705 states have internal predecessors, (76241), 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) [2021-11-06 18:10:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60126 states to 60126 states and 77211 transitions. [2021-11-06 18:10:56,485 INFO L78 Accepts]: Start accepts. Automaton has 60126 states and 77211 transitions. Word has length 91 [2021-11-06 18:10:56,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:10:56,486 INFO L470 AbstractCegarLoop]: Abstraction has 60126 states and 77211 transitions. [2021-11-06 18:10:56,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-11-06 18:10:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 60126 states and 77211 transitions. [2021-11-06 18:10:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 18:10:56,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:10:56,510 INFO L513 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] [2021-11-06 18:10:56,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:10:56,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 18:10:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:10:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1781012299, now seen corresponding path program 1 times [2021-11-06 18:10:56,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:10:56,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969426087] [2021-11-06 18:10:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:10:56,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:10:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:10:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:10:56,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:10:56,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969426087] [2021-11-06 18:10:56,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969426087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:10:56,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:10:56,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:10:56,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858290927] [2021-11-06 18:10:56,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:10:56,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:10:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:10:56,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:10:56,733 INFO L87 Difference]: Start difference. First operand 60126 states and 77211 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 18:11:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:11:01,265 INFO L93 Difference]: Finished difference Result 178118 states and 228711 transitions. [2021-11-06 18:11:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:11:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 108 [2021-11-06 18:11:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:11:01,948 INFO L225 Difference]: With dead ends: 178118 [2021-11-06 18:11:01,949 INFO L226 Difference]: Without dead ends: 118116 [2021-11-06 18:11:02,490 INFO L786 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 [2021-11-06 18:11:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118116 states. [2021-11-06 18:11:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118116 to 118108. [2021-11-06 18:11:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118108 states, 117266 states have (on average 1.2764569440417513) internal successors, (149685), 117271 states have internal predecessors, (149685), 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) [2021-11-06 18:11:06,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118108 states to 118108 states and 151613 transitions. [2021-11-06 18:11:06,243 INFO L78 Accepts]: Start accepts. Automaton has 118108 states and 151613 transitions. Word has length 108 [2021-11-06 18:11:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:11:06,244 INFO L470 AbstractCegarLoop]: Abstraction has 118108 states and 151613 transitions. [2021-11-06 18:11:06,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-06 18:11:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 118108 states and 151613 transitions. [2021-11-06 18:11:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 18:11:06,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:11:06,268 INFO L513 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] [2021-11-06 18:11:06,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:11:06,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 18:11:06,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:11:06,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2015465521, now seen corresponding path program 1 times [2021-11-06 18:11:06,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:11:06,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816106963] [2021-11-06 18:11:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:11:06,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:11:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:11:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:11:06,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:11:06,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816106963] [2021-11-06 18:11:06,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816106963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:11:06,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:11:06,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:11:06,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733907883] [2021-11-06 18:11:06,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:11:06,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:11:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:11:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:11:06,531 INFO L87 Difference]: Start difference. First operand 118108 states and 151613 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)