./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-mutex_drivers-net-ethernet-micrel-ks8851.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-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.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 adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:40:02,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:40:02,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:40:02,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:40:02,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:40:02,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:40:02,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:40:02,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:40:02,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:40:02,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:40:02,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:40:02,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:40:02,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:40:02,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:40:02,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:40:02,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:40:02,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:40:02,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:40:02,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:40:02,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:40:02,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:40:02,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:40:02,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:40:02,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:40:02,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:40:02,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:40:02,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:40:02,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:40:02,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:40:02,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:40:02,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:40:02,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:40:02,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:40:02,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:40:02,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:40:02,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:40:02,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:40:02,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:40:02,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:40:02,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:40:02,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:40:02,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:40:02,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:40:02,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:40:02,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:40:02,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:40:02,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:40:02,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:40:02,508 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:40:02,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:40:02,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:40:02,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:40:02,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:40:02,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:40:02,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:40:02,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:40:02,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:40:02,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:40:02,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:40:02,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:40:02,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:40:02,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:40:02,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:40:02,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:40:02,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:40:02,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:40:02,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:40:02,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:40:02,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:40:02,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:40:02,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:40:02,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2021-11-06 18:40:02,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:40:02,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:40:02,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:40:02,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:40:02,699 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:40:02,700 INFO L432 ainManager$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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-06 18:40:02,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82547d667/c9e3c89e99914d10a53ba3beea7e4bff/FLAGce330e644 [2021-11-06 18:40:03,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:40:03,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-06 18:40:03,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82547d667/c9e3c89e99914d10a53ba3beea7e4bff/FLAGce330e644 [2021-11-06 18:40:03,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82547d667/c9e3c89e99914d10a53ba3beea7e4bff [2021-11-06 18:40:03,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:40:03,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:40:03,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:40:03,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:40:03,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:40:03,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:40:03" (1/1) ... [2021-11-06 18:40:03,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7065964b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:03, skipping insertion in model container [2021-11-06 18:40:03,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:40:03" (1/1) ... [2021-11-06 18:40:03,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:40:03,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:40:04,965 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-06 18:40:04,968 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-06 18:40:04,968 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-06 18:40:04,968 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-06 18:40:04,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:40:05,010 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:40:05,223 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-06 18:40:05,224 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-06 18:40:05,225 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-06 18:40:05,225 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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-06 18:40:05,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:40:05,361 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:40:05,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05 WrapperNode [2021-11-06 18:40:05,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:40:05,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:40:05,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:40:05,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:40:05,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:05,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:08,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:40:08,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:40:08,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:40:08,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:40:08,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:08,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:09,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:09,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:10,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:11,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:11,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:40:11,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:40:11,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:40:11,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:40:11,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (1/1) ... [2021-11-06 18:40:11,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:40:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:40:11,904 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 18:40:11,909 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 18:40:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:40:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:40:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:40:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:41:22,795 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 18:41:22,796 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:41:22,796 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:41:22,797 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:41:22,797 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-06 18:41:22,797 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:41:22,798 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 18:41:22,798 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 18:41:22,799 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:41:22,803 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:41:22,807 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 18:41:22,807 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 18:41:22,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:41:22,884 INFO L299 CfgBuilder]: Removed 24094 assume(true) statements. [2021-11-06 18:41:22,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:41:22 BoogieIcfgContainer [2021-11-06 18:41:22,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:41:22,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:41:22,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:41:22,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:41:22,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:40:03" (1/3) ... [2021-11-06 18:41:22,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ac5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:41:22, skipping insertion in model container [2021-11-06 18:41:22,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:40:05" (2/3) ... [2021-11-06 18:41:22,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ac5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:41:22, skipping insertion in model container [2021-11-06 18:41:22,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:41:22" (3/3) ... [2021-11-06 18:41:22,910 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-06 18:41:22,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:41:22,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 486 error locations. [2021-11-06 18:41:22,993 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:41:22,998 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 18:41:22,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 486 error locations. [2021-11-06 18:41:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 24545 states, 24059 states have (on average 1.3685107444199676) internal successors, (32925), 24544 states have internal predecessors, (32925), 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 18:41:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-06 18:41:23,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:41:23,218 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] [2021-11-06 18:41:23,218 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 483 more)] === [2021-11-06 18:41:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:41:23,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2022520009, now seen corresponding path program 1 times [2021-11-06 18:41:23,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:41:23,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751590503] [2021-11-06 18:41:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:41:23,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:41:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:41:23,709 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 18:41:23,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:41:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751590503] [2021-11-06 18:41:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751590503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:41:23,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:41:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:41:23,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845348763] [2021-11-06 18:41:23,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:41:23,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:41:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:41:23,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:41:23,764 INFO L87 Difference]: Start difference. First operand has 24545 states, 24059 states have (on average 1.3685107444199676) internal successors, (32925), 24544 states have internal predecessors, (32925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:41:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:41:27,313 INFO L93 Difference]: Finished difference Result 71784 states and 96364 transitions. [2021-11-06 18:41:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:41:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-06 18:41:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:41:27,472 INFO L225 Difference]: With dead ends: 71784 [2021-11-06 18:41:27,472 INFO L226 Difference]: Without dead ends: 46251 [2021-11-06 18:41:27,526 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 18:41:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46251 states. [2021-11-06 18:41:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46251 to 42920. [2021-11-06 18:41:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42920 states, 42434 states have (on average 1.3313145119479664) internal successors, (56493), 42919 states have internal predecessors, (56493), 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 18:41:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42920 states to 42920 states and 56493 transitions. [2021-11-06 18:41:28,566 INFO L78 Accepts]: Start accepts. Automaton has 42920 states and 56493 transitions. Word has length 68 [2021-11-06 18:41:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:41:28,568 INFO L470 AbstractCegarLoop]: Abstraction has 42920 states and 56493 transitions. [2021-11-06 18:41:28,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:41:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 42920 states and 56493 transitions. [2021-11-06 18:41:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 18:41:28,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:41:28,573 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] [2021-11-06 18:41:28,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:41:28,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 483 more)] === [2021-11-06 18:41:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:41:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1803716258, now seen corresponding path program 1 times [2021-11-06 18:41:28,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:41:28,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967477744] [2021-11-06 18:41:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:41:28,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:41:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:41:28,759 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 18:41:28,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:41:28,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967477744] [2021-11-06 18:41:28,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967477744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:41:28,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:41:28,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:41:28,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345851415] [2021-11-06 18:41:28,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:41:28,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:41:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:41:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:41:28,764 INFO L87 Difference]: Start difference. First operand 42920 states and 56493 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) [2021-11-06 18:41:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:41:32,182 INFO L93 Difference]: Finished difference Result 128328 states and 169008 transitions. [2021-11-06 18:41:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:41:32,183 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 [2021-11-06 18:41:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:41:32,353 INFO L225 Difference]: With dead ends: 128328 [2021-11-06 18:41:32,353 INFO L226 Difference]: Without dead ends: 85548 [2021-11-06 18:41:32,424 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 18:41:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85548 states. [2021-11-06 18:41:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85548 to 84600. [2021-11-06 18:41:33,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84600 states, 84114 states have (on average 1.3336662148988279) internal successors, (112180), 84599 states have internal predecessors, (112180), 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 18:41:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84600 states to 84600 states and 112180 transitions. [2021-11-06 18:41:34,044 INFO L78 Accepts]: Start accepts. Automaton has 84600 states and 112180 transitions. Word has length 70 [2021-11-06 18:41:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:41:34,232 INFO L470 AbstractCegarLoop]: Abstraction has 84600 states and 112180 transitions. [2021-11-06 18:41:34,232 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) [2021-11-06 18:41:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 84600 states and 112180 transitions. [2021-11-06 18:41:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 18:41:34,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:41:34,233 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] [2021-11-06 18:41:34,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:41:34,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 483 more)] === [2021-11-06 18:41:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:41:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 292728386, now seen corresponding path program 1 times [2021-11-06 18:41:34,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:41:34,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524897123] [2021-11-06 18:41:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:41:34,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:41:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:41:34,429 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 18:41:34,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:41:34,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524897123] [2021-11-06 18:41:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524897123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:41:34,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:41:34,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:41:34,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254595064] [2021-11-06 18:41:34,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:41:34,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:41:34,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:41:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:41:34,432 INFO L87 Difference]: Start difference. First operand 84600 states and 112180 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:41:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:41:38,109 INFO L93 Difference]: Finished difference Result 187984 states and 249412 transitions. [2021-11-06 18:41:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:41:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-06 18:41:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:41:38,320 INFO L225 Difference]: With dead ends: 187984 [2021-11-06 18:41:38,320 INFO L226 Difference]: Without dead ends: 103524 [2021-11-06 18:41:38,424 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 18:41:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103524 states. [2021-11-06 18:41:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103524 to 103236. [2021-11-06 18:41:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103236 states, 102750 states have (on average 1.3341703163017031) internal successors, (137086), 103235 states have internal predecessors, (137086), 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 18:41:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103236 states to 103236 states and 137086 transitions. [2021-11-06 18:41:40,455 INFO L78 Accepts]: Start accepts. Automaton has 103236 states and 137086 transitions. Word has length 73 [2021-11-06 18:41:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:41:40,457 INFO L470 AbstractCegarLoop]: Abstraction has 103236 states and 137086 transitions. [2021-11-06 18:41:40,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 18:41:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 103236 states and 137086 transitions. [2021-11-06 18:41:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 18:41:40,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:41:40,458 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] [2021-11-06 18:41:40,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:41:40,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr442ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 483 more)] === [2021-11-06 18:41:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:41:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1216967742, now seen corresponding path program 1 times [2021-11-06 18:41:40,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:41:40,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726178775] [2021-11-06 18:41:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:41:40,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:41:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:41:40,572 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 18:41:40,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:41:40,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726178775] [2021-11-06 18:41:40,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726178775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:41:40,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:41:40,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:41:40,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127711112] [2021-11-06 18:41:40,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:41:40,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:41:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:41:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:41:40,575 INFO L87 Difference]: Start difference. First operand 103236 states and 137086 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:41:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:41:45,470 INFO L93 Difference]: Finished difference Result 294652 states and 391256 transitions. [2021-11-06 18:41:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:41:45,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-06 18:41:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:41:45,812 INFO L225 Difference]: With dead ends: 294652 [2021-11-06 18:41:45,813 INFO L226 Difference]: Without dead ends: 191556 [2021-11-06 18:41:45,939 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 18:41:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191556 states. [2021-11-06 18:41:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191556 to 190608. [2021-11-06 18:41:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190608 states, 190122 states have (on average 1.3346062002293264) internal successors, (253738), 190607 states have internal predecessors, (253738), 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 18:41:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190608 states to 190608 states and 253738 transitions. [2021-11-06 18:41:49,841 INFO L78 Accepts]: Start accepts. Automaton has 190608 states and 253738 transitions. Word has length 74 [2021-11-06 18:41:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:41:49,843 INFO L470 AbstractCegarLoop]: Abstraction has 190608 states and 253738 transitions. [2021-11-06 18:41:49,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 18:41:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 190608 states and 253738 transitions. [2021-11-06 18:41:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 18:41:49,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:41:49,850 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] [2021-11-06 18:41:49,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:41:49,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 483 more)] === [2021-11-06 18:41:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:41:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1636212593, now seen corresponding path program 1 times [2021-11-06 18:41:49,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:41:49,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494830303] [2021-11-06 18:41:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:41:49,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:41:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:41:50,021 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 18:41:50,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:41:50,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494830303] [2021-11-06 18:41:50,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494830303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:41:50,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:41:50,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:41:50,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882436657] [2021-11-06 18:41:50,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:41:50,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:41:50,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:41:50,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:41:50,024 INFO L87 Difference]: Start difference. First operand 190608 states and 253738 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 18:41:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:41:56,677 INFO L93 Difference]: Finished difference Result 468436 states and 623442 transitions. [2021-11-06 18:41:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:41:56,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-06 18:41:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:41:57,256 INFO L225 Difference]: With dead ends: 468436 [2021-11-06 18:41:57,258 INFO L226 Difference]: Without dead ends: 277968 [2021-11-06 18:41:57,514 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 18:41:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277968 states.