./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-wireless-prism54-prism54.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-wireless-prism54-prism54.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 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:36:14,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:36:14,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:36:14,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:36:14,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:36:14,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:36:14,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:36:14,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:36:14,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:36:14,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:36:14,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:36:14,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:36:14,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:36:14,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:36:14,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:36:14,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:36:14,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:36:14,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:36:14,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:36:14,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:36:14,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:36:14,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:36:14,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:36:14,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:36:14,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:36:14,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:36:14,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:36:14,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:36:14,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:36:14,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:36:14,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:36:14,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:36:14,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:36:14,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:36:14,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:36:14,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:36:14,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:36:14,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:36:14,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:36:14,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:36:14,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:36:14,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:36:14,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:36:14,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:36:14,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:36:14,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:36:14,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:36:14,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:36:14,792 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:36:14,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:36:14,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:36:14,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:36:14,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:36:14,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:36:14,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:36:14,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:36:14,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:36:14,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:36:14,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:36:14,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:36:14,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:36:14,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:36:14,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:36:14,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:36:14,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:36:14,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:36:14,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:36:14,796 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:36:14,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:36:14,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:36:14,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:36:14,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e2d0e28997af6c53edeab79acb28db60116030b3545ebb50af81c3e69fe889 [2021-11-07 17:36:14,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:36:15,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:36:15,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:36:15,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:36:15,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:36:15,018 INFO L432 ainManager$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-wireless-prism54-prism54.cil.i [2021-11-07 17:36:15,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775bd33ad/c91919f32b5149118fe6eee85b5ef606/FLAGd8d5fb90c [2021-11-07 17:36:15,922 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:36:15,923 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-wireless-prism54-prism54.cil.i [2021-11-07 17:36:15,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775bd33ad/c91919f32b5149118fe6eee85b5ef606/FLAGd8d5fb90c [2021-11-07 17:36:16,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775bd33ad/c91919f32b5149118fe6eee85b5ef606 [2021-11-07 17:36:16,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:36:16,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:36:16,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:36:16,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:36:16,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:36:16,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:36:16" (1/1) ... [2021-11-07 17:36:16,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bd739e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:16, skipping insertion in model container [2021-11-07 17:36:16,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:36:16" (1/1) ... [2021-11-07 17:36:16,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:36:16,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:36:20,540 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-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-07 17:36:20,542 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-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-07 17:36:20,543 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-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-07 17:36:20,543 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-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-07 17:36:20,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:36:20,679 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:36:21,102 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-wireless-prism54-prism54.cil.i[482333,482346] [2021-11-07 17:36:21,104 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-wireless-prism54-prism54.cil.i[482502,482515] [2021-11-07 17:36:21,104 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-wireless-prism54-prism54.cil.i[482669,482682] [2021-11-07 17:36:21,104 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-wireless-prism54-prism54.cil.i[482837,482850] [2021-11-07 17:36:21,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:36:21,341 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:36:21,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21 WrapperNode [2021-11-07 17:36:21,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:36:21,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:36:21,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:36:21,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:36:21,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:21,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:23,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:36:23,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:36:23,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:36:23,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:36:23,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:23,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:23,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:23,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:25,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:25,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:25,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:26,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:36:26,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:36:26,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:36:26,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:36:26,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (1/1) ... [2021-11-07 17:36:26,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:36:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:36:26,402 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 17:36:26,428 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 17:36:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-07 17:36:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-07 17:36:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 17:36:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-07 17:36:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-07 17:36:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 17:36:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:36:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:36:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:36:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:36:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:36:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:37:10,680 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:37:10,680 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:37:10,680 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:37:10,680 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:37:10,682 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:37:10,684 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:37:10,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:37:10,741 INFO L299 CfgBuilder]: Removed 15179 assume(true) statements. [2021-11-07 17:37:10,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:37:10 BoogieIcfgContainer [2021-11-07 17:37:10,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:37:10,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:37:10,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:37:10,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:37:10,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:36:16" (1/3) ... [2021-11-07 17:37:10,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e569e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:37:10, skipping insertion in model container [2021-11-07 17:37:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:36:21" (2/3) ... [2021-11-07 17:37:10,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e569e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:37:10, skipping insertion in model container [2021-11-07 17:37:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:37:10" (3/3) ... [2021-11-07 17:37:10,761 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-prism54-prism54.cil.i [2021-11-07 17:37:10,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:37:10,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 208 error locations. [2021-11-07 17:37:10,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:37:10,863 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 17:37:10,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 208 error locations. [2021-11-07 17:37:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 14955 states, 14679 states have (on average 1.354520062674569) internal successors, (19883), 14886 states have internal predecessors, (19883), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-11-07 17:37:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 17:37:11,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:11,043 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] [2021-11-07 17:37:11,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 607482254, now seen corresponding path program 1 times [2021-11-07 17:37:11,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:11,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131988007] [2021-11-07 17:37:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:11,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:11,957 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 17:37:11,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:11,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131988007] [2021-11-07 17:37:11,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131988007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:11,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:11,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:11,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351570051] [2021-11-07 17:37:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:11,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:37:11,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:37:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:12,020 INFO L87 Difference]: Start difference. First operand has 14955 states, 14679 states have (on average 1.354520062674569) internal successors, (19883), 14886 states have internal predecessors, (19883), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 17:37:14,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:37:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:15,253 INFO L93 Difference]: Finished difference Result 43515 states and 58450 transitions. [2021-11-07 17:37:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:37:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-07 17:37:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:15,405 INFO L225 Difference]: With dead ends: 43515 [2021-11-07 17:37:15,405 INFO L226 Difference]: Without dead ends: 27677 [2021-11-07 17:37:15,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:15,461 INFO L933 BasicCegarLoop]: 18778 mSDtfsCounter, 17725 mSDsluCounter, 18352 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2228.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17725 SdHoareTripleChecker+Valid, 37130 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.05ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2382.80ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:15,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17725 Valid, 37130 Invalid, 39 Unknown, 0 Unchecked, 88.05ms Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2382.80ms Time] [2021-11-07 17:37:15,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27677 states. [2021-11-07 17:37:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27677 to 26844. [2021-11-07 17:37:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26844 states, 26500 states have (on average 1.254301886792453) internal successors, (33239), 26707 states have internal predecessors, (33239), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-07 17:37:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26844 states to 26844 states and 33503 transitions. [2021-11-07 17:37:16,319 INFO L78 Accepts]: Start accepts. Automaton has 26844 states and 33503 transitions. Word has length 33 [2021-11-07 17:37:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:37:16,320 INFO L470 AbstractCegarLoop]: Abstraction has 26844 states and 33503 transitions. [2021-11-07 17:37:16,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 17:37:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 26844 states and 33503 transitions. [2021-11-07 17:37:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 17:37:16,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:16,326 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] [2021-11-07 17:37:16,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:37:16,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1083935826, now seen corresponding path program 1 times [2021-11-07 17:37:16,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:16,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681527201] [2021-11-07 17:37:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:16,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:16,757 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 17:37:16,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:16,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681527201] [2021-11-07 17:37:16,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681527201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:16,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:16,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:16,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566648774] [2021-11-07 17:37:16,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:16,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:37:16,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:37:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:16,764 INFO L87 Difference]: Start difference. First operand 26844 states and 33503 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 17:37:18,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:37:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:20,056 INFO L93 Difference]: Finished difference Result 80164 states and 100110 transitions. [2021-11-07 17:37:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:37:20,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2021-11-07 17:37:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:20,228 INFO L225 Difference]: With dead ends: 80164 [2021-11-07 17:37:20,228 INFO L226 Difference]: Without dead ends: 53372 [2021-11-07 17:37:20,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:20,316 INFO L933 BasicCegarLoop]: 17798 mSDtfsCounter, 17497 mSDsluCounter, 17670 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2199.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17497 SdHoareTripleChecker+Valid, 35468 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.13ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2342.36ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:20,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17497 Valid, 35468 Invalid, 34 Unknown, 0 Unchecked, 68.13ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2342.36ms Time] [2021-11-07 17:37:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53372 states. [2021-11-07 17:37:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53372 to 53028. [2021-11-07 17:37:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53028 states, 52548 states have (on average 1.2550620385171654) internal successors, (65951), 52755 states have internal predecessors, (65951), 264 states have call successors, (264), 8 states have call predecessors, (264), 8 states have return successors, (264), 264 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-07 17:37:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53028 states to 53028 states and 66479 transitions. [2021-11-07 17:37:22,357 INFO L78 Accepts]: Start accepts. Automaton has 53028 states and 66479 transitions. Word has length 37 [2021-11-07 17:37:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:37:22,357 INFO L470 AbstractCegarLoop]: Abstraction has 53028 states and 66479 transitions. [2021-11-07 17:37:22,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 17:37:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 53028 states and 66479 transitions. [2021-11-07 17:37:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 17:37:22,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:22,362 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] [2021-11-07 17:37:22,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:37:22,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:22,363 INFO L85 PathProgramCache]: Analyzing trace with hash 801056305, now seen corresponding path program 1 times [2021-11-07 17:37:22,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:22,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046715978] [2021-11-07 17:37:22,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:22,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:22,997 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 17:37:22,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:22,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046715978] [2021-11-07 17:37:22,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046715978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:22,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:22,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:22,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979429594] [2021-11-07 17:37:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:23,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:37:23,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:37:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:23,002 INFO L87 Difference]: Start difference. First operand 53028 states and 66479 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 17:37:25,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:37:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:27,090 INFO L93 Difference]: Finished difference Result 140822 states and 176364 transitions. [2021-11-07 17:37:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:37:27,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-07 17:37:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:27,364 INFO L225 Difference]: With dead ends: 140822 [2021-11-07 17:37:27,365 INFO L226 Difference]: Without dead ends: 87846 [2021-11-07 17:37:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:27,479 INFO L933 BasicCegarLoop]: 17768 mSDtfsCounter, 12169 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2208.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12169 SdHoareTripleChecker+Valid, 34892 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.54ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2405.49ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:27,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12169 Valid, 34892 Invalid, 63 Unknown, 0 Unchecked, 46.54ms Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 2405.49ms Time] [2021-11-07 17:37:27,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87846 states. [2021-11-07 17:37:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87846 to 86936. [2021-11-07 17:37:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86936 states, 86292 states have (on average 1.2538010476058035) internal successors, (108193), 86499 states have internal predecessors, (108193), 420 states have call successors, (420), 16 states have call predecessors, (420), 16 states have return successors, (420), 420 states have call predecessors, (420), 420 states have call successors, (420) [2021-11-07 17:37:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86936 states to 86936 states and 109033 transitions. [2021-11-07 17:37:30,198 INFO L78 Accepts]: Start accepts. Automaton has 86936 states and 109033 transitions. Word has length 40 [2021-11-07 17:37:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:37:30,199 INFO L470 AbstractCegarLoop]: Abstraction has 86936 states and 109033 transitions. [2021-11-07 17:37:30,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 17:37:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 86936 states and 109033 transitions. [2021-11-07 17:37:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 17:37:30,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:30,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:30,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:37:30,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1964916975, now seen corresponding path program 1 times [2021-11-07 17:37:30,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:30,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416169181] [2021-11-07 17:37:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:30,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:37:30,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:30,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416169181] [2021-11-07 17:37:30,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416169181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:30,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:30,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:30,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763588876] [2021-11-07 17:37:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:30,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:37:30,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:37:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:30,632 INFO L87 Difference]: Start difference. First operand 86936 states and 109033 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:37:32,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:37:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:34,763 INFO L93 Difference]: Finished difference Result 174156 states and 218192 transitions. [2021-11-07 17:37:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:37:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-07 17:37:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:35,148 INFO L225 Difference]: With dead ends: 174156 [2021-11-07 17:37:35,148 INFO L226 Difference]: Without dead ends: 130358 [2021-11-07 17:37:35,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:35,273 INFO L933 BasicCegarLoop]: 35185 mSDtfsCounter, 17452 mSDsluCounter, 17713 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2173.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17452 SdHoareTripleChecker+Valid, 52898 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.52ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2346.71ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:35,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17452 Valid, 52898 Invalid, 30 Unknown, 0 Unchecked, 38.52ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2346.71ms Time] [2021-11-07 17:37:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130358 states. [2021-11-07 17:37:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130358 to 130014. [2021-11-07 17:37:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130014 states, 129152 states have (on average 1.2539333498513379) internal successors, (161948), 129359 states have internal predecessors, (161948), 630 states have call successors, (630), 24 states have call predecessors, (630), 24 states have return successors, (630), 630 states have call predecessors, (630), 630 states have call successors, (630) [2021-11-07 17:37:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130014 states to 130014 states and 163208 transitions. [2021-11-07 17:37:38,365 INFO L78 Accepts]: Start accepts. Automaton has 130014 states and 163208 transitions. Word has length 82 [2021-11-07 17:37:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:37:38,366 INFO L470 AbstractCegarLoop]: Abstraction has 130014 states and 163208 transitions. [2021-11-07 17:37:38,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:37:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 130014 states and 163208 transitions. [2021-11-07 17:37:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 17:37:38,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:38,374 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:38,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:37:38,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1308981967, now seen corresponding path program 1 times [2021-11-07 17:37:38,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:38,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113912283] [2021-11-07 17:37:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:38,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:37:39,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:39,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113912283] [2021-11-07 17:37:39,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113912283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:39,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:39,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:39,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321510938] [2021-11-07 17:37:39,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:39,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:37:39,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:37:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:39,118 INFO L87 Difference]: Start difference. First operand 130014 states and 163208 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:37:41,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:37:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:43,718 INFO L93 Difference]: Finished difference Result 260316 states and 326550 transitions. [2021-11-07 17:37:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:37:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-07 17:37:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:44,438 INFO L225 Difference]: With dead ends: 260316 [2021-11-07 17:37:44,438 INFO L226 Difference]: Without dead ends: 173440 [2021-11-07 17:37:44,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:37:44,568 INFO L933 BasicCegarLoop]: 35185 mSDtfsCounter, 17498 mSDsluCounter, 17668 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2181.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17498 SdHoareTripleChecker+Valid, 52853 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.87ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2352.67ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:44,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17498 Valid, 52853 Invalid, 32 Unknown, 0 Unchecked, 36.87ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2352.67ms Time] [2021-11-07 17:37:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173440 states. [2021-11-07 17:37:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173440 to 173075. [2021-11-07 17:37:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173075 states, 171995 states have (on average 1.2540248263030902) internal successors, (215686), 172202 states have internal predecessors, (215686), 840 states have call successors, (840), 32 states have call predecessors, (840), 32 states have return successors, (840), 840 states have call predecessors, (840), 840 states have call successors, (840) [2021-11-07 17:37:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173075 states to 173075 states and 217366 transitions. [2021-11-07 17:37:48,085 INFO L78 Accepts]: Start accepts. Automaton has 173075 states and 217366 transitions. Word has length 82 [2021-11-07 17:37:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:37:48,086 INFO L470 AbstractCegarLoop]: Abstraction has 173075 states and 217366 transitions. [2021-11-07 17:37:48,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 17:37:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 173075 states and 217366 transitions. [2021-11-07 17:37:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 17:37:48,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:37:48,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:37:48,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:37:48,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 205 more)] === [2021-11-07 17:37:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:37:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1282240081, now seen corresponding path program 1 times [2021-11-07 17:37:48,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:37:48,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420904033] [2021-11-07 17:37:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:37:48,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:37:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:37:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:37:48,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:37:48,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420904033] [2021-11-07 17:37:48,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420904033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:37:48,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:37:48,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:37:48,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13751178] [2021-11-07 17:37:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:37:48,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:37:48,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:37:48,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:37:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:37:48,581 INFO L87 Difference]: Start difference. First operand 173075 states and 217366 transitions. Second operand has 4 states, 4 states have (on average 18.25) 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) [2021-11-07 17:37:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:37:51,510 INFO L93 Difference]: Finished difference Result 173075 states and 217366 transitions. [2021-11-07 17:37:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:37:51,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) 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 82 [2021-11-07 17:37:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:37:51,853 INFO L225 Difference]: With dead ends: 173075 [2021-11-07 17:37:51,853 INFO L226 Difference]: Without dead ends: 173069 [2021-11-07 17:37:51,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:37:51,912 INFO L933 BasicCegarLoop]: 17727 mSDtfsCounter, 17666 mSDsluCounter, 17631 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17666 SdHoareTripleChecker+Valid, 35358 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.45ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.23ms IncrementalHoareTripleChecker+Time [2021-11-07 17:37:51,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17666 Valid, 35358 Invalid, 106 Unknown, 0 Unchecked, 51.45ms Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 185.23ms Time] [2021-11-07 17:37:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173069 states.