./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.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 fdbc5180119fad988a6a3a24d2f5ed804cbc2cd6d0e7bbb402b6d4dd37802e45 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:34:48,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:34:48,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:34:48,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:34:48,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:34:48,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:34:48,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:34:48,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:34:48,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:34:48,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:34:48,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:34:48,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:34:48,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:34:48,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:34:48,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:34:48,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:34:48,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:34:48,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:34:48,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:34:48,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:34:48,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:34:48,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:34:48,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:34:48,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:34:48,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:34:48,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:34:48,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:34:48,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:34:48,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:34:48,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:34:48,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:34:49,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:34:49,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:34:49,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:34:49,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:34:49,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:34:49,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:34:49,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:34:49,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:34:49,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:34:49,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:34:49,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:34:49,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:34:49,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:34:49,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:34:49,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:34:49,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:34:49,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:34:49,045 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:34:49,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:34:49,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:34:49,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:34:49,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:34:49,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:34:49,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:34:49,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:34:49,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:34:49,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:34:49,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:34:49,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:34:49,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:34:49,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:34:49,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:34:49,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:34:49,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:34:49,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:34:49,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbc5180119fad988a6a3a24d2f5ed804cbc2cd6d0e7bbb402b6d4dd37802e45 [2021-11-07 17:34:49,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:34:49,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:34:49,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:34:49,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:34:49,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:34:49,238 INFO L432 ainManager$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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i [2021-11-07 17:34:49,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26ed8f2c/be26511dcf604effb42fea7ca90bc7d0/FLAG7d0230b17 [2021-11-07 17:34:49,881 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:34:49,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i [2021-11-07 17:34:49,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26ed8f2c/be26511dcf604effb42fea7ca90bc7d0/FLAG7d0230b17 [2021-11-07 17:34:50,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26ed8f2c/be26511dcf604effb42fea7ca90bc7d0 [2021-11-07 17:34:50,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:34:50,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:34:50,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:34:50,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:34:50,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:34:50,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:34:50" (1/1) ... [2021-11-07 17:34:50,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9e006f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:50, skipping insertion in model container [2021-11-07 17:34:50,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:34:50" (1/1) ... [2021-11-07 17:34:50,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:34:50,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:34:52,708 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394320,394333] [2021-11-07 17:34:52,711 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394489,394502] [2021-11-07 17:34:52,711 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394656,394669] [2021-11-07 17:34:52,712 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394824,394837] [2021-11-07 17:34:52,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:34:52,741 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:34:53,309 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394320,394333] [2021-11-07 17:34:53,310 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394489,394502] [2021-11-07 17:34:53,310 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394656,394669] [2021-11-07 17:34:53,311 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-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i[394824,394837] [2021-11-07 17:34:53,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:34:53,470 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:34:53,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53 WrapperNode [2021-11-07 17:34:53,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:34:53,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:34:53,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:34:53,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:34:53,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:34:53,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:34:59,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:34:59,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:34:59,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:34:59,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:34:59,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:34:59,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:00,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:00,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:02,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:03,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:03,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:04,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:35:04,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:35:04,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:35:04,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:35:04,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (1/1) ... [2021-11-07 17:35:04,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:35:04,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:35:04,245 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) [2021-11-07 17:35:04,263 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 [2021-11-07 17:35:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-11-07 17:35:04,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-11-07 17:35:04,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:35:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-11-07 17:35:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-11-07 17:35:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:35:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:35:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 17:35:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 17:35:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:35:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:35:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-11-07 17:35:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:35:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 17:35:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 17:35:49,693 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,694 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,695 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,695 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:35:49,695 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 17:35:49,703 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:35:49,703 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:35:49,704 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint lmc_trace_returnLabel#14: havoc lmc_proto_type_#t~mem1375.base, lmc_proto_type_#t~mem1375.offset; [2021-11-07 17:35:49,705 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint lmc_trace_returnLabel#10: havoc lmc_proto_type_#t~mem1375.base, lmc_proto_type_#t~mem1375.offset; [2021-11-07 17:35:49,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:35:49,765 INFO L299 CfgBuilder]: Removed 40678 assume(true) statements. [2021-11-07 17:35:49,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:49 BoogieIcfgContainer [2021-11-07 17:35:49,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:35:49,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:35:49,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:35:49,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:35:49,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:34:50" (1/3) ... [2021-11-07 17:35:49,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d906844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:49, skipping insertion in model container [2021-11-07 17:35:49,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:34:53" (2/3) ... [2021-11-07 17:35:49,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d906844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:35:49, skipping insertion in model container [2021-11-07 17:35:49,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:35:49" (3/3) ... [2021-11-07 17:35:49,792 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-lmc-lmc.cil.i [2021-11-07 17:35:49,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:35:49,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2021-11-07 17:35:49,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:35:49,946 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 [2021-11-07 17:35:49,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2021-11-07 17:35:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 31672 states, 31567 states have (on average 1.2488674881997022) internal successors, (39423), 31638 states have internal predecessors, (39423), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-07 17:35:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 17:35:50,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:50,321 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] [2021-11-07 17:35:50,321 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [lmc_driver_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, lmc_driver_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 65 more)] === [2021-11-07 17:35:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1944323651, now seen corresponding path program 1 times [2021-11-07 17:35:50,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:50,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809959926] [2021-11-07 17:35:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:50,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:50,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:50,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809959926] [2021-11-07 17:35:50,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809959926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:50,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:50,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:50,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890241761] [2021-11-07 17:35:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:50,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:50,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:50,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:50,953 INFO L87 Difference]: Start difference. First operand has 31672 states, 31567 states have (on average 1.2488674881997022) internal successors, (39423), 31638 states have internal predecessors, (39423), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-07 17:35:53,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:35:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:35:55,434 INFO L93 Difference]: Finished difference Result 94470 states and 117796 transitions. [2021-11-07 17:35:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:35:55,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-07 17:35:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:35:55,762 INFO L225 Difference]: With dead ends: 94470 [2021-11-07 17:35:55,762 INFO L226 Difference]: Without dead ends: 62620 [2021-11-07 17:35:55,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:55,900 INFO L933 BasicCegarLoop]: 39439 mSDtfsCounter, 38982 mSDsluCounter, 39356 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2095.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38982 SdHoareTripleChecker+Valid, 78795 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 160.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2278.04ms IncrementalHoareTripleChecker+Time [2021-11-07 17:35:55,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38982 Valid, 78795 Invalid, 44 Unknown, 0 Unchecked, 160.45ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2278.04ms Time] [2021-11-07 17:35:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62620 states. [2021-11-07 17:35:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62620 to 62562. [2021-11-07 17:35:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62562 states, 62420 states have (on average 1.2424383210509453) internal successors, (77553), 62495 states have internal predecessors, (77553), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-07 17:35:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62562 states to 62562 states and 77677 transitions. [2021-11-07 17:35:57,970 INFO L78 Accepts]: Start accepts. Automaton has 62562 states and 77677 transitions. Word has length 63 [2021-11-07 17:35:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:35:57,972 INFO L470 AbstractCegarLoop]: Abstraction has 62562 states and 77677 transitions. [2021-11-07 17:35:57,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-07 17:35:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 62562 states and 77677 transitions. [2021-11-07 17:35:57,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 17:35:57,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:35:57,980 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] [2021-11-07 17:35:57,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:35:57,982 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [lmc_driver_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, lmc_driver_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 65 more)] === [2021-11-07 17:35:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:35:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -691082562, now seen corresponding path program 1 times [2021-11-07 17:35:57,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:35:57,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52480743] [2021-11-07 17:35:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:35:57,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:35:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:35:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:35:58,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:35:58,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52480743] [2021-11-07 17:35:58,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52480743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:35:58,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:35:58,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:35:58,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394504313] [2021-11-07 17:35:58,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:35:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:35:58,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:35:58,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:35:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:35:58,213 INFO L87 Difference]: Start difference. First operand 62562 states and 77677 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 17:36:00,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:36:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:36:03,025 INFO L93 Difference]: Finished difference Result 186826 states and 231989 transitions. [2021-11-07 17:36:03,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:36:03,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-07 17:36:03,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:36:03,572 INFO L225 Difference]: With dead ends: 186826 [2021-11-07 17:36:03,572 INFO L226 Difference]: Without dead ends: 124388 [2021-11-07 17:36:03,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:36:03,998 INFO L933 BasicCegarLoop]: 39383 mSDtfsCounter, 38500 mSDsluCounter, 38996 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2119.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38500 SdHoareTripleChecker+Valid, 78379 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.81ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2280.42ms IncrementalHoareTripleChecker+Time [2021-11-07 17:36:03,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38500 Valid, 78379 Invalid, 59 Unknown, 0 Unchecked, 93.81ms Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 2280.42ms Time] [2021-11-07 17:36:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124388 states. [2021-11-07 17:36:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124388 to 124094. [2021-11-07 17:36:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124094 states, 123882 states have (on average 1.2426421917631294) internal successors, (153941), 123961 states have internal predecessors, (153941), 120 states have call successors, (120), 24 states have call predecessors, (120), 24 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-07 17:36:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124094 states to 124094 states and 154181 transitions. [2021-11-07 17:36:07,206 INFO L78 Accepts]: Start accepts. Automaton has 124094 states and 154181 transitions. Word has length 64 [2021-11-07 17:36:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:36:07,207 INFO L470 AbstractCegarLoop]: Abstraction has 124094 states and 154181 transitions. [2021-11-07 17:36:07,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 17:36:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 124094 states and 154181 transitions. [2021-11-07 17:36:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 17:36:07,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:36:07,209 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] [2021-11-07 17:36:07,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:36:07,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONERROR_FUNCTION === [lmc_driver_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, lmc_driver_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 65 more)] === [2021-11-07 17:36:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:36:07,211 INFO L85 PathProgramCache]: Analyzing trace with hash -570518936, now seen corresponding path program 1 times [2021-11-07 17:36:07,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:36:07,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500759820] [2021-11-07 17:36:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:36:07,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:36:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:36:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:36:07,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:36:07,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500759820] [2021-11-07 17:36:07,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500759820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:36:07,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:36:07,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:36:07,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790699983] [2021-11-07 17:36:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:36:07,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:36:07,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:36:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:36:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:36:07,849 INFO L87 Difference]: Start difference. First operand 124094 states and 154181 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 17:36:09,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:36:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:36:14,889 INFO L93 Difference]: Finished difference Result 356830 states and 443689 transitions. [2021-11-07 17:36:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:36:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2021-11-07 17:36:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:36:15,913 INFO L225 Difference]: With dead ends: 356830 [2021-11-07 17:36:15,914 INFO L226 Difference]: Without dead ends: 232860 [2021-11-07 17:36:16,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:36:16,292 INFO L933 BasicCegarLoop]: 39160 mSDtfsCounter, 34224 mSDsluCounter, 38986 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2091.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34224 SdHoareTripleChecker+Valid, 78146 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.19ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2301.03ms IncrementalHoareTripleChecker+Time [2021-11-07 17:36:16,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34224 Valid, 78146 Invalid, 60 Unknown, 0 Unchecked, 69.19ms Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 2301.03ms Time] [2021-11-07 17:36:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232860 states. [2021-11-07 17:36:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232860 to 231248. [2021-11-07 17:36:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231248 states, 230912 states have (on average 1.2437075595898004) internal successors, (287187), 231003 states have internal predecessors, (287187), 220 states have call successors, (220), 48 states have call predecessors, (220), 48 states have return successors, (284), 220 states have call predecessors, (284), 220 states have call successors, (284) [2021-11-07 17:36:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231248 states to 231248 states and 287691 transitions. [2021-11-07 17:36:23,190 INFO L78 Accepts]: Start accepts. Automaton has 231248 states and 287691 transitions. Word has length 70 [2021-11-07 17:36:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:36:23,191 INFO L470 AbstractCegarLoop]: Abstraction has 231248 states and 287691 transitions. [2021-11-07 17:36:23,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 17:36:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 231248 states and 287691 transitions. [2021-11-07 17:36:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 17:36:23,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:36:23,194 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] [2021-11-07 17:36:23,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:36:23,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [lmc_driver_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, lmc_driver_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 65 more)] === [2021-11-07 17:36:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:36:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1980861288, now seen corresponding path program 1 times [2021-11-07 17:36:23,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:36:23,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629729568] [2021-11-07 17:36:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:36:23,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:36:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:36:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:36:23,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:36:23,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629729568] [2021-11-07 17:36:23,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629729568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:36:23,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:36:23,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:36:23,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780549998] [2021-11-07 17:36:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:36:23,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:36:23,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:36:23,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:36:23,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:36:23,371 INFO L87 Difference]: Start difference. First operand 231248 states and 287691 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-07 17:36:25,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []