./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.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 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:35:47,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:35:47,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:35:47,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:35:47,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:35:47,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:35:47,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:35:47,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:35:47,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:35:47,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:35:47,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:35:47,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:35:47,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:35:47,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:35:47,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:35:47,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:35:47,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:35:47,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:35:47,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:35:47,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:35:47,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:35:47,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:35:47,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:35:47,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:35:47,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:35:47,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:35:47,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:35:47,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:35:47,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:35:47,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:35:47,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:35:47,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:35:47,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:35:47,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:35:47,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:35:47,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:35:47,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:35:47,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:35:47,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:35:47,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:35:47,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:35:47,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:35:47,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:35:47,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:35:47,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:35:47,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:35:47,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:35:47,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:35:47,337 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:35:47,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:35:47,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:35:47,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:35:47,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:35:47,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:35:47,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:35:47,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:35:47,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:35:47,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:35:47,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:35:47,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:35:47,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:35:47,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:35:47,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:35:47,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:35:47,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:35:47,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:35:47,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:35:47,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:35:47,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:35:47,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:35:47,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:35:47,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 [2021-11-05 16:35:47,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:35:47,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:35:47,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:35:47,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:35:47,625 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:35:47,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-05 16:35:47,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098aa1eec/288ad0a99ec64750900d52d2fd6e3275/FLAG617dcd4bb [2021-11-05 16:35:48,254 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:35:48,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-05 16:35:48,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098aa1eec/288ad0a99ec64750900d52d2fd6e3275/FLAG617dcd4bb [2021-11-05 16:35:48,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098aa1eec/288ad0a99ec64750900d52d2fd6e3275 [2021-11-05 16:35:48,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:35:48,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:35:48,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:35:48,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:35:48,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:35:48,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:35:48" (1/1) ... [2021-11-05 16:35:48,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623c89f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:48, skipping insertion in model container [2021-11-05 16:35:48,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:35:48" (1/1) ... [2021-11-05 16:35:48,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:35:48,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:35:49,027 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-05 16:35:50,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:35:50,415 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:35:50,479 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2021-11-05 16:35:50,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:35:50,856 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:35:50,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50 WrapperNode [2021-11-05 16:35:50,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:35:50,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:35:50,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:35:50,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:35:50,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:50,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:52,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:35:52,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:35:52,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:35:52,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:35:52,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:52,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:52,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:52,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:53,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:53,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:53,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:53,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:35:53,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:35:53,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:35:53,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:35:53,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (1/1) ... [2021-11-05 16:35:53,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:35:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:35:53,740 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) [2021-11-05 16:35:53,751 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 [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-05 16:35:53,795 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:35:53,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-05 16:35:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-05 16:35:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:35:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-05 16:35:53,796 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:35:53,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-05 16:35:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-05 16:35:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-05 16:35:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-05 16:35:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-05 16:35:53,797 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-05 16:35:53,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:35:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-05 16:35:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-05 16:35:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:35:53,798 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-05 16:36:15,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:36:15,576 INFO L299 CfgBuilder]: Removed 8531 assume(true) statements. [2021-11-05 16:36:15,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:36:15 BoogieIcfgContainer [2021-11-05 16:36:15,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:36:15,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:36:15,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:36:15,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:36:15,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:35:48" (1/3) ... [2021-11-05 16:36:15,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@970936e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:36:15, skipping insertion in model container [2021-11-05 16:36:15,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:35:50" (2/3) ... [2021-11-05 16:36:15,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@970936e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:36:15, skipping insertion in model container [2021-11-05 16:36:15,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:36:15" (3/3) ... [2021-11-05 16:36:15,586 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2021-11-05 16:36:15,600 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:36:15,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:36:15,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:36:15,647 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 [2021-11-05 16:36:15,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:36:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 8673 states, 8538 states have (on average 1.3836964160224876) internal successors, (11814), 8539 states have internal predecessors, (11814), 123 states have call successors, (123), 10 states have call predecessors, (123), 10 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-05 16:36:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 16:36:15,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:36:15,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:36:15,736 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:36:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:36:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -589120283, now seen corresponding path program 1 times [2021-11-05 16:36:15,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:36:15,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644540763] [2021-11-05 16:36:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:36:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:36:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:36:16,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:36:16,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644540763] [2021-11-05 16:36:16,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644540763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:36:16,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:36:16,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:36:16,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535870609] [2021-11-05 16:36:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:36:16,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:36:16,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:36:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:36:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:36:16,374 INFO L87 Difference]: Start difference. First operand has 8673 states, 8538 states have (on average 1.3836964160224876) internal successors, (11814), 8539 states have internal predecessors, (11814), 123 states have call successors, (123), 10 states have call predecessors, (123), 10 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-05 16:36:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:36:17,706 INFO L93 Difference]: Finished difference Result 25908 states and 36030 transitions. [2021-11-05 16:36:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:36:17,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-05 16:36:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:36:17,783 INFO L225 Difference]: With dead ends: 25908 [2021-11-05 16:36:17,784 INFO L226 Difference]: Without dead ends: 16918 [2021-11-05 16:36:17,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:36:17,823 INFO L933 BasicCegarLoop]: 12002 mSDtfsCounter, 11744 mSDsluCounter, 11867 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 845.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11744 SdHoareTripleChecker+Valid, 23869 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.10ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 901.89ms IncrementalHoareTripleChecker+Time [2021-11-05 16:36:17,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11744 Valid, 23869 Invalid, 15 Unknown, 0 Unchecked, 48.10ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 901.89ms Time] [2021-11-05 16:36:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16918 states. [2021-11-05 16:36:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16918 to 16918. [2021-11-05 16:36:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16918 states, 16651 states have (on average 1.3513903068884752) internal successors, (22502), 16651 states have internal predecessors, (22502), 246 states have call successors, (246), 20 states have call predecessors, (246), 20 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2021-11-05 16:36:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16918 states to 16918 states and 22994 transitions. [2021-11-05 16:36:18,254 INFO L78 Accepts]: Start accepts. Automaton has 16918 states and 22994 transitions. Word has length 44 [2021-11-05 16:36:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:36:18,256 INFO L470 AbstractCegarLoop]: Abstraction has 16918 states and 22994 transitions. [2021-11-05 16:36:18,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-05 16:36:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 16918 states and 22994 transitions. [2021-11-05 16:36:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:36:18,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:36:18,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:36:18,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:36:18,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:36:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:36:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2021164542, now seen corresponding path program 1 times [2021-11-05 16:36:18,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:36:18,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436531506] [2021-11-05 16:36:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:36:18,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:36:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:36:18,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:36:18,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436531506] [2021-11-05 16:36:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436531506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:36:18,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:36:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:36:18,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688475405] [2021-11-05 16:36:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:36:18,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:36:18,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:36:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:36:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:36:18,497 INFO L87 Difference]: Start difference. First operand 16918 states and 22994 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 16:36:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:36:19,467 INFO L93 Difference]: Finished difference Result 33792 states and 45933 transitions. [2021-11-05 16:36:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:36:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2021-11-05 16:36:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:36:19,585 INFO L225 Difference]: With dead ends: 33792 [2021-11-05 16:36:19,589 INFO L226 Difference]: Without dead ends: 33786 [2021-11-05 16:36:19,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.26ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:36:19,615 INFO L933 BasicCegarLoop]: 11827 mSDtfsCounter, 11503 mSDsluCounter, 35032 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11503 SdHoareTripleChecker+Valid, 46859 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 355.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:36:19,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11503 Valid, 46859 Invalid, 509 Unknown, 0 Unchecked, 58.22ms Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 355.65ms Time] [2021-11-05 16:36:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33786 states. [2021-11-05 16:36:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33786 to 33586. [2021-11-05 16:36:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33586 states, 33053 states have (on average 1.3521314252866607) internal successors, (44692), 33053 states have internal predecessors, (44692), 492 states have call successors, (492), 40 states have call predecessors, (492), 40 states have return successors, (492), 492 states have call predecessors, (492), 492 states have call successors, (492) [2021-11-05 16:36:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33586 states to 33586 states and 45676 transitions. [2021-11-05 16:36:20,695 INFO L78 Accepts]: Start accepts. Automaton has 33586 states and 45676 transitions. Word has length 47 [2021-11-05 16:36:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:36:20,695 INFO L470 AbstractCegarLoop]: Abstraction has 33586 states and 45676 transitions. [2021-11-05 16:36:20,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2021-11-05 16:36:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 33586 states and 45676 transitions. [2021-11-05 16:36:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 16:36:20,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:36:20,746 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:36:20,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:36:20,746 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:36:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:36:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2013302414, now seen corresponding path program 1 times [2021-11-05 16:36:20,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:36:20,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302132636] [2021-11-05 16:36:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:36:20,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:36:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-05 16:36:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-05 16:36:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 16:36:21,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:36:21,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302132636] [2021-11-05 16:36:21,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302132636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:36:21,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:36:21,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:36:21,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143473827] [2021-11-05 16:36:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:36:21,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:36:21,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:36:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:36:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:36:21,103 INFO L87 Difference]: Start difference. First operand 33586 states and 45676 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:36:23,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:36:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:36:36,549 INFO L93 Difference]: Finished difference Result 97226 states and 133104 transitions. [2021-11-05 16:36:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:36:36,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2021-11-05 16:36:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:36:36,901 INFO L225 Difference]: With dead ends: 97226 [2021-11-05 16:36:36,901 INFO L226 Difference]: Without dead ends: 63684 [2021-11-05 16:36:36,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:36:36,975 INFO L933 BasicCegarLoop]: 11757 mSDtfsCounter, 10439 mSDsluCounter, 18720 mSDsCounter, 0 mSdLazyCounter, 4562 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12848.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10489 SdHoareTripleChecker+Valid, 30477 SdHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.73ms SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 4562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14275.67ms IncrementalHoareTripleChecker+Time [2021-11-05 16:36:36,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10489 Valid, 30477 Invalid, 4852 Unknown, 0 Unchecked, 55.73ms Time], IncrementalHoareTripleChecker [290 Valid, 4562 Invalid, 0 Unknown, 0 Unchecked, 14275.67ms Time] [2021-11-05 16:36:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63684 states. [2021-11-05 16:36:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63684 to 63178. [2021-11-05 16:36:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63178 states, 62177 states have (on average 1.3530083471380092) internal successors, (84126), 62177 states have internal predecessors, (84126), 920 states have call successors, (920), 80 states have call predecessors, (920), 80 states have return successors, (920), 920 states have call predecessors, (920), 920 states have call successors, (920) [2021-11-05 16:36:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63178 states to 63178 states and 85966 transitions. [2021-11-05 16:36:38,621 INFO L78 Accepts]: Start accepts. Automaton has 63178 states and 85966 transitions. Word has length 155 [2021-11-05 16:36:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:36:38,622 INFO L470 AbstractCegarLoop]: Abstraction has 63178 states and 85966 transitions. [2021-11-05 16:36:38,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:36:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 63178 states and 85966 transitions. [2021-11-05 16:36:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-05 16:36:38,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:36:38,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:36:38,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:36:38,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:36:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:36:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash -920622097, now seen corresponding path program 1 times [2021-11-05 16:36:38,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:36:38,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678142065] [2021-11-05 16:36:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:36:38,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:36:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-05 16:36:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-05 16:36:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:36:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 16:36:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:36:38,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678142065] [2021-11-05 16:36:38,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678142065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:36:38,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:36:38,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:36:38,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177211065] [2021-11-05 16:36:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:36:38,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:36:38,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:36:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:36:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:36:38,932 INFO L87 Difference]: Start difference. First operand 63178 states and 85966 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:36:43,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:36:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:36:56,525 INFO L93 Difference]: Finished difference Result 170166 states and 233282 transitions. [2021-11-05 16:36:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:36:56,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2021-11-05 16:36:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:36:56,964 INFO L225 Difference]: With dead ends: 170166 [2021-11-05 16:36:56,964 INFO L226 Difference]: Without dead ends: 107032 [2021-11-05 16:36:57,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:36:57,057 INFO L933 BasicCegarLoop]: 13049 mSDtfsCounter, 8305 mSDsluCounter, 19511 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14276.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8342 SdHoareTripleChecker+Valid, 32560 SdHoareTripleChecker+Invalid, 5296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.64ms SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15919.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:36:57,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8342 Valid, 32560 Invalid, 5296 Unknown, 0 Unchecked, 47.64ms Time], IncrementalHoareTripleChecker [257 Valid, 5038 Invalid, 1 Unknown, 0 Unchecked, 15919.00ms Time] [2021-11-05 16:36:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107032 states. [2021-11-05 16:36:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107032 to 106194. [2021-11-05 16:36:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106194 states, 104457 states have (on average 1.3560986817542147) internal successors, (141654), 104457 states have internal predecessors, (141654), 1576 states have call successors, (1576), 160 states have call predecessors, (1576), 160 states have return successors, (1576), 1576 states have call predecessors, (1576), 1576 states have call successors, (1576) [2021-11-05 16:36:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106194 states to 106194 states and 144806 transitions. [2021-11-05 16:36:59,531 INFO L78 Accepts]: Start accepts. Automaton has 106194 states and 144806 transitions. Word has length 171 [2021-11-05 16:36:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:36:59,533 INFO L470 AbstractCegarLoop]: Abstraction has 106194 states and 144806 transitions. [2021-11-05 16:36:59,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:36:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 106194 states and 144806 transitions. [2021-11-05 16:36:59,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-05 16:36:59,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:36:59,848 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:36:59,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:36:59,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:36:59,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:36:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1438137957, now seen corresponding path program 1 times [2021-11-05 16:36:59,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:36:59,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527642130] [2021-11-05 16:36:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:36:59,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:36:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-05 16:37:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-05 16:37:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 16:37:00,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:37:00,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527642130] [2021-11-05 16:37:00,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527642130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:37:00,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:37:00,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:37:00,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013233569] [2021-11-05 16:37:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:37:00,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:37:00,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:37:00,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:37:00,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:37:00,122 INFO L87 Difference]: Start difference. First operand 106194 states and 144806 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:37:05,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:37:09,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:37:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:37:27,203 INFO L93 Difference]: Finished difference Result 263010 states and 360826 transitions. [2021-11-05 16:37:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:37:27,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 191 [2021-11-05 16:37:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:37:27,634 INFO L225 Difference]: With dead ends: 263010 [2021-11-05 16:37:27,634 INFO L226 Difference]: Without dead ends: 156860 [2021-11-05 16:37:27,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:37:27,937 INFO L933 BasicCegarLoop]: 18408 mSDtfsCounter, 10636 mSDsluCounter, 22601 mSDsCounter, 0 mSdLazyCounter, 7013 mSolverCounterSat, 228 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21841.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10679 SdHoareTripleChecker+Valid, 41009 SdHoareTripleChecker+Invalid, 7242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.98ms SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 7013 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24407.48ms IncrementalHoareTripleChecker+Time [2021-11-05 16:37:27,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10679 Valid, 41009 Invalid, 7242 Unknown, 0 Unchecked, 76.98ms Time], IncrementalHoareTripleChecker [228 Valid, 7013 Invalid, 1 Unknown, 0 Unchecked, 24407.48ms Time] [2021-11-05 16:37:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156860 states. [2021-11-05 16:37:30,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156860 to 155522. [2021-11-05 16:37:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155522 states, 152981 states have (on average 1.3564429569685124) internal successors, (207510), 152981 states have internal predecessors, (207510), 2300 states have call successors, (2300), 240 states have call predecessors, (2300), 240 states have return successors, (2300), 2300 states have call predecessors, (2300), 2300 states have call successors, (2300) [2021-11-05 16:37:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155522 states to 155522 states and 212110 transitions. [2021-11-05 16:37:31,191 INFO L78 Accepts]: Start accepts. Automaton has 155522 states and 212110 transitions. Word has length 191 [2021-11-05 16:37:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:37:31,191 INFO L470 AbstractCegarLoop]: Abstraction has 155522 states and 212110 transitions. [2021-11-05 16:37:31,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:37:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 155522 states and 212110 transitions. [2021-11-05 16:37:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-05 16:37:31,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:37:31,325 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:37:31,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:37:31,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:37:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:37:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1804635881, now seen corresponding path program 1 times [2021-11-05 16:37:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:37:31,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260322841] [2021-11-05 16:37:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:37:31,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:37:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-05 16:37:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-05 16:37:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:37:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:37:31,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:37:31,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260322841] [2021-11-05 16:37:31,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260322841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:37:31,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:37:31,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:37:31,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875402374] [2021-11-05 16:37:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:37:31,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:37:31,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:37:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:37:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:37:31,562 INFO L87 Difference]: Start difference. First operand 155522 states and 212110 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:37:35,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:37:38,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:37:40,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:37:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:37:56,905 INFO L93 Difference]: Finished difference Result 468026 states and 641948 transitions. [2021-11-05 16:37:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:37:56,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 191 [2021-11-05 16:37:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:37:57,986 INFO L225 Difference]: With dead ends: 468026 [2021-11-05 16:37:57,986 INFO L226 Difference]: Without dead ends: 312548 [2021-11-05 16:37:58,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:37:58,469 INFO L933 BasicCegarLoop]: 11832 mSDtfsCounter, 11531 mSDsluCounter, 18729 mSDsCounter, 0 mSdLazyCounter, 4727 mSolverCounterSat, 353 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17953.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11572 SdHoareTripleChecker+Valid, 30561 SdHoareTripleChecker+Invalid, 5082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.13ms SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4727 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19974.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:37:58,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11572 Valid, 30561 Invalid, 5082 Unknown, 0 Unchecked, 68.13ms Time], IncrementalHoareTripleChecker [353 Valid, 4727 Invalid, 2 Unknown, 0 Unchecked, 19974.29ms Time] [2021-11-05 16:37:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312548 states. [2021-11-05 16:38:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312548 to 310046. [2021-11-05 16:38:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310046 states, 304965 states have (on average 1.3529421409014148) internal successors, (412600), 304965 states have internal predecessors, (412600), 4600 states have call successors, (4600), 480 states have call predecessors, (4600), 480 states have return successors, (4600), 4600 states have call predecessors, (4600), 4600 states have call successors, (4600) [2021-11-05 16:38:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310046 states to 310046 states and 421800 transitions. [2021-11-05 16:38:06,023 INFO L78 Accepts]: Start accepts. Automaton has 310046 states and 421800 transitions. Word has length 191 [2021-11-05 16:38:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:38:06,025 INFO L470 AbstractCegarLoop]: Abstraction has 310046 states and 421800 transitions. [2021-11-05 16:38:06,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:38:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 310046 states and 421800 transitions. [2021-11-05 16:38:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-05 16:38:06,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:38:06,368 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:38:06,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:38:06,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:38:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:38:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2082169982, now seen corresponding path program 1 times [2021-11-05 16:38:06,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:38:06,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290122751] [2021-11-05 16:38:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:38:06,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:38:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:38:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-05 16:38:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:38:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-05 16:38:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:38:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 16:38:06,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:38:06,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290122751] [2021-11-05 16:38:06,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290122751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:38:06,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:38:06,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:38:06,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489253903] [2021-11-05 16:38:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:38:06,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:38:06,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:38:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:38:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:38:06,597 INFO L87 Difference]: Start difference. First operand 310046 states and 421800 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 3 states have internal predecessors, (178), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-05 16:38:07,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:38:11,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []