./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 03:19:48,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:19:48,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:19:48,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:19:48,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:19:48,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:19:48,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:19:48,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:19:48,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:19:48,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:19:48,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:19:48,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:19:48,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:19:48,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:19:48,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:19:48,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:19:48,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:19:48,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:19:48,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:19:48,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:19:48,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:19:48,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:19:48,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:19:48,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:19:48,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:19:48,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:19:48,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:19:48,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:19:48,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:19:48,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:19:48,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:19:48,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:19:48,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:19:48,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:19:48,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:19:48,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:19:48,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:19:48,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:19:48,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:19:48,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:19:48,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:19:48,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 03:19:48,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:19:48,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:19:48,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 03:19:48,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 03:19:48,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:19:48,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:19:48,443 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 03:19:48,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:19:48,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:19:48,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:19:48,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:19:48,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:19:48,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:19:48,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:19:48,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:19:48,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:19:48,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:19:48,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:19:48,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:19:48,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:19:48,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 03:19:48,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 03:19:48,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:19:48,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:19:48,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2021-11-03 03:19:48,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:19:48,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:19:48,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:19:48,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:19:48,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:19:48,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-03 03:19:48,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b84f9e9/80d720e4f8c046f79b63c72360996bf2/FLAGd7c827af1 [2021-11-03 03:19:49,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:19:49,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-03 03:19:49,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b84f9e9/80d720e4f8c046f79b63c72360996bf2/FLAGd7c827af1 [2021-11-03 03:19:49,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b84f9e9/80d720e4f8c046f79b63c72360996bf2 [2021-11-03 03:19:49,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:19:49,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:19:49,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:19:49,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:19:49,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:19:49,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:19:49" (1/1) ... [2021-11-03 03:19:49,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26876ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:49, skipping insertion in model container [2021-11-03 03:19:49,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:19:49" (1/1) ... [2021-11-03 03:19:49,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:19:49,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:19:51,948 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2021-11-03 03:19:51,950 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2021-11-03 03:19:51,950 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2021-11-03 03:19:51,951 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2021-11-03 03:19:51,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:19:51,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:19:52,318 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2021-11-03 03:19:52,319 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2021-11-03 03:19:52,319 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2021-11-03 03:19:52,319 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2021-11-03 03:19:52,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:19:52,448 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:19:52,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52 WrapperNode [2021-11-03 03:19:52,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:19:52,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:19:52,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:19:52,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:19:52,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:52,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:54,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:19:54,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:19:54,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:19:54,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:19:54,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:54,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:55,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:55,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:56,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:56,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:56,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:57,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:19:57,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:19:57,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:19:57,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:19:57,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (1/1) ... [2021-11-03 03:19:57,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:19:57,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 03:19:57,351 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) [2021-11-03 03:19:57,357 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 [2021-11-03 03:19:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-03 03:19:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-03 03:19:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-03 03:19:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-03 03:19:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-03 03:19:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-03 03:19:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:19:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-03 03:19:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-03 03:19:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:19:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:19:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-03 03:19:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-03 03:19:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-03 03:19:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-03 03:19:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:19:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-03 03:19:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-03 03:19:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-03 03:19:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-03 03:19:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-03 03:19:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-03 03:19:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-03 03:19:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-03 03:19:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:19:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-03 03:19:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-03 03:19:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-03 03:19:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-03 03:19:57,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:19:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-03 03:19:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-03 03:19:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-03 03:19:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-03 03:19:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:19:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-03 03:19:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-03 03:19:57,394 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-03 03:19:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-03 03:19:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-03 03:19:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-03 03:19:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:19:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-03 03:19:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-03 03:19:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-03 03:19:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-03 03:19:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-03 03:19:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-03 03:19:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:19:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-03 03:20:19,452 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L15087: #t~ret2822 := main_#res; [2021-11-03 03:20:19,453 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_5_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.base, ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.base, ldv_pci_pci_instance_5_~#ldv_5_resource_pm_message~0.offset; [2021-11-03 03:20:19,453 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 03:20:19,454 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_17_returnLabel: main_#res := 0; [2021-11-03 03:20:19,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:20:19,544 INFO L299 CfgBuilder]: Removed 22116 assume(true) statements. [2021-11-03 03:20:19,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:20:19 BoogieIcfgContainer [2021-11-03 03:20:19,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:20:19,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:20:19,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:20:19,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:20:19,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:19:49" (1/3) ... [2021-11-03 03:20:19,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070bb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:20:19, skipping insertion in model container [2021-11-03 03:20:19,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:19:52" (2/3) ... [2021-11-03 03:20:19,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070bb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:20:19, skipping insertion in model container [2021-11-03 03:20:19,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:20:19" (3/3) ... [2021-11-03 03:20:19,567 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2021-11-03 03:20:19,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:20:19,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-11-03 03:20:19,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:20:19,657 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 [2021-11-03 03:20:19,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-11-03 03:20:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 17871 states, 17664 states have (on average 1.296875) internal successors, (22908), 17762 states have internal predecessors, (22908), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:20:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 03:20:19,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:20:19,839 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] [2021-11-03 03:20:19,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:20:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:20:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1867274467, now seen corresponding path program 1 times [2021-11-03 03:20:19,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:20:19,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15041461] [2021-11-03 03:20:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:20:19,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:20:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:20:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:20:20,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:20:20,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15041461] [2021-11-03 03:20:20,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15041461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:20:20,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:20:20,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:20:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339905562] [2021-11-03 03:20:20,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:20:20,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:20:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:20:20,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:20:20,362 INFO L87 Difference]: Start difference. First operand has 17871 states, 17664 states have (on average 1.296875) internal successors, (22908), 17762 states have internal predecessors, (22908), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-03 03:20:22,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:21:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:21:11,899 INFO L93 Difference]: Finished difference Result 35247 states and 45595 transitions. [2021-11-03 03:21:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:21:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-03 03:21:11,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:21:11,975 INFO L225 Difference]: With dead ends: 35247 [2021-11-03 03:21:11,975 INFO L226 Difference]: Without dead ends: 17268 [2021-11-03 03:21:12,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:21:12,097 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 22159 mSDsluCounter, 22095 mSDsCounter, 0 mSdLazyCounter, 43678 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43792.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22159 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 43705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 118.28ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49751.31ms IncrementalHoareTripleChecker+Time [2021-11-03 03:21:12,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22159 Valid, 638 Invalid, 43705 Unknown, 0 Unchecked, 118.28ms Time], IncrementalHoareTripleChecker [26 Valid, 43678 Invalid, 1 Unknown, 0 Unchecked, 49751.31ms Time] [2021-11-03 03:21:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2021-11-03 03:21:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 17268. [2021-11-03 03:21:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17268 states, 17063 states have (on average 1.2722264549024205) internal successors, (21708), 17159 states have internal predecessors, (21708), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:21:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17268 states to 17268 states and 21882 transitions. [2021-11-03 03:21:12,701 INFO L78 Accepts]: Start accepts. Automaton has 17268 states and 21882 transitions. Word has length 22 [2021-11-03 03:21:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:21:12,703 INFO L470 AbstractCegarLoop]: Abstraction has 17268 states and 21882 transitions. [2021-11-03 03:21:12,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-03 03:21:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 17268 states and 21882 transitions. [2021-11-03 03:21:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-03 03:21:12,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:21:12,708 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] [2021-11-03 03:21:12,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:21:12,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:21:12,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:21:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash -843711802, now seen corresponding path program 1 times [2021-11-03 03:21:12,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:21:12,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935759930] [2021-11-03 03:21:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:21:12,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:21:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:21:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:21:12,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:21:12,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935759930] [2021-11-03 03:21:12,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935759930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:21:12,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:21:12,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:21:12,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967857841] [2021-11-03 03:21:12,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:21:12,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:21:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:21:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:21:12,923 INFO L87 Difference]: Start difference. First operand 17268 states and 21882 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-03 03:21:14,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:22:01,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:22:01,802 INFO L93 Difference]: Finished difference Result 17268 states and 21882 transitions. [2021-11-03 03:22:01,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:22:01,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-03 03:22:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:22:01,903 INFO L225 Difference]: With dead ends: 17268 [2021-11-03 03:22:01,904 INFO L226 Difference]: Without dead ends: 17264 [2021-11-03 03:22:01,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:22:01,918 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21857 mSDsluCounter, 21805 mSDsCounter, 0 mSdLazyCounter, 43380 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41482.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21857 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.54ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47807.39ms IncrementalHoareTripleChecker+Time [2021-11-03 03:22:01,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21857 Valid, 348 Invalid, 43407 Unknown, 0 Unchecked, 90.54ms Time], IncrementalHoareTripleChecker [26 Valid, 43380 Invalid, 1 Unknown, 0 Unchecked, 47807.39ms Time] [2021-11-03 03:22:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17264 states. [2021-11-03 03:22:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17264 to 17264. [2021-11-03 03:22:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17264 states, 17061 states have (on average 1.2721411406130942) internal successors, (21704), 17155 states have internal predecessors, (21704), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:22:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17264 states to 17264 states and 21878 transitions. [2021-11-03 03:22:02,437 INFO L78 Accepts]: Start accepts. Automaton has 17264 states and 21878 transitions. Word has length 24 [2021-11-03 03:22:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:22:02,438 INFO L470 AbstractCegarLoop]: Abstraction has 17264 states and 21878 transitions. [2021-11-03 03:22:02,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-03 03:22:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 17264 states and 21878 transitions. [2021-11-03 03:22:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 03:22:02,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:22:02,439 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] [2021-11-03 03:22:02,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:22:02,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:22:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:22:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash 943632681, now seen corresponding path program 1 times [2021-11-03 03:22:02,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:22:02,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54250892] [2021-11-03 03:22:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:22:02,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:22:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:22:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:22:02,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:22:02,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54250892] [2021-11-03 03:22:02,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54250892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:22:02,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:22:02,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:22:02,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39792289] [2021-11-03 03:22:02,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:22:02,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:22:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:22:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:22:02,637 INFO L87 Difference]: Start difference. First operand 17264 states and 21878 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-03 03:22:04,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:23:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:23:04,526 INFO L93 Difference]: Finished difference Result 17264 states and 21878 transitions. [2021-11-03 03:23:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:23:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-03 03:23:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:23:04,583 INFO L225 Difference]: With dead ends: 17264 [2021-11-03 03:23:04,584 INFO L226 Difference]: Without dead ends: 17260 [2021-11-03 03:23:04,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:23:04,597 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21851 mSDsluCounter, 21803 mSDsCounter, 0 mSdLazyCounter, 43372 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51928.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21851 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.88ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43372 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60570.58ms IncrementalHoareTripleChecker+Time [2021-11-03 03:23:04,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21851 Valid, 348 Invalid, 43399 Unknown, 0 Unchecked, 105.88ms Time], IncrementalHoareTripleChecker [26 Valid, 43372 Invalid, 1 Unknown, 0 Unchecked, 60570.58ms Time] [2021-11-03 03:23:04,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2021-11-03 03:23:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 17260. [2021-11-03 03:23:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17260 states, 17059 states have (on average 1.2720558063192449) internal successors, (21700), 17151 states have internal predecessors, (21700), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:23:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17260 states to 17260 states and 21874 transitions. [2021-11-03 03:23:04,980 INFO L78 Accepts]: Start accepts. Automaton has 17260 states and 21874 transitions. Word has length 26 [2021-11-03 03:23:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:23:04,981 INFO L470 AbstractCegarLoop]: Abstraction has 17260 states and 21874 transitions. [2021-11-03 03:23:04,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-03 03:23:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 17260 states and 21874 transitions. [2021-11-03 03:23:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 03:23:04,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:23:04,982 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] [2021-11-03 03:23:04,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:23:04,983 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:23:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:23:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash 594762764, now seen corresponding path program 1 times [2021-11-03 03:23:04,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:23:04,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597440791] [2021-11-03 03:23:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:23:04,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:23:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:23:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:23:05,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:23:05,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597440791] [2021-11-03 03:23:05,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597440791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:23:05,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:23:05,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:23:05,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318843439] [2021-11-03 03:23:05,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:23:05,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:23:05,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:23:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:23:05,170 INFO L87 Difference]: Start difference. First operand 17260 states and 21874 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-03 03:23:07,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:24:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:24:13,441 INFO L93 Difference]: Finished difference Result 17260 states and 21874 transitions. [2021-11-03 03:24:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:24:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-03 03:24:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:24:13,473 INFO L225 Difference]: With dead ends: 17260 [2021-11-03 03:24:13,474 INFO L226 Difference]: Without dead ends: 17256 [2021-11-03 03:24:13,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:24:13,486 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21845 mSDsluCounter, 21801 mSDsCounter, 0 mSdLazyCounter, 43364 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56224.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21845 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 177.29ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66748.89ms IncrementalHoareTripleChecker+Time [2021-11-03 03:24:13,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21845 Valid, 348 Invalid, 43391 Unknown, 0 Unchecked, 177.29ms Time], IncrementalHoareTripleChecker [26 Valid, 43364 Invalid, 1 Unknown, 0 Unchecked, 66748.89ms Time] [2021-11-03 03:24:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17256 states. [2021-11-03 03:24:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17256 to 17256. [2021-11-03 03:24:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17256 states, 17057 states have (on average 1.271970452013836) internal successors, (21696), 17147 states have internal predecessors, (21696), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:24:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17256 states to 17256 states and 21870 transitions. [2021-11-03 03:24:13,884 INFO L78 Accepts]: Start accepts. Automaton has 17256 states and 21870 transitions. Word has length 28 [2021-11-03 03:24:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:24:13,885 INFO L470 AbstractCegarLoop]: Abstraction has 17256 states and 21870 transitions. [2021-11-03 03:24:13,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-03 03:24:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 17256 states and 21870 transitions. [2021-11-03 03:24:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 03:24:13,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:24:13,889 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] [2021-11-03 03:24:13,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 03:24:13,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:24:13,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:24:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 338221935, now seen corresponding path program 1 times [2021-11-03 03:24:13,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:24:13,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070629640] [2021-11-03 03:24:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:24:13,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:24:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:24:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:24:14,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:24:14,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070629640] [2021-11-03 03:24:14,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070629640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:24:14,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:24:14,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:24:14,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766149493] [2021-11-03 03:24:14,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:24:14,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:24:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:24:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:24:14,052 INFO L87 Difference]: Start difference. First operand 17256 states and 21870 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-03 03:24:16,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:25:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:25:30,525 INFO L93 Difference]: Finished difference Result 17256 states and 21870 transitions. [2021-11-03 03:25:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:25:30,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-03 03:25:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:25:30,559 INFO L225 Difference]: With dead ends: 17256 [2021-11-03 03:25:30,559 INFO L226 Difference]: Without dead ends: 17252 [2021-11-03 03:25:30,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:25:30,570 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21839 mSDsluCounter, 21799 mSDsCounter, 0 mSdLazyCounter, 43356 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62308.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21839 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.82ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43356 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74987.83ms IncrementalHoareTripleChecker+Time [2021-11-03 03:25:30,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21839 Valid, 348 Invalid, 43383 Unknown, 0 Unchecked, 108.82ms Time], IncrementalHoareTripleChecker [26 Valid, 43356 Invalid, 1 Unknown, 0 Unchecked, 74987.83ms Time] [2021-11-03 03:25:30,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17252 states. [2021-11-03 03:25:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17252 to 17252. [2021-11-03 03:25:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17252 states, 17055 states have (on average 1.271885077689827) internal successors, (21692), 17143 states have internal predecessors, (21692), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:25:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17252 states to 17252 states and 21866 transitions. [2021-11-03 03:25:30,992 INFO L78 Accepts]: Start accepts. Automaton has 17252 states and 21866 transitions. Word has length 30 [2021-11-03 03:25:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:25:30,993 INFO L470 AbstractCegarLoop]: Abstraction has 17252 states and 21866 transitions. [2021-11-03 03:25:30,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-03 03:25:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 17252 states and 21866 transitions. [2021-11-03 03:25:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 03:25:30,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:25:30,996 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] [2021-11-03 03:25:30,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 03:25:30,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:25:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:25:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1384378542, now seen corresponding path program 1 times [2021-11-03 03:25:30,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:25:30,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945167999] [2021-11-03 03:25:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:25:30,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:25:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:25:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:25:31,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:25:31,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945167999] [2021-11-03 03:25:31,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945167999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:25:31,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:25:31,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:25:31,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809402828] [2021-11-03 03:25:31,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:25:31,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:25:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:25:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:25:31,154 INFO L87 Difference]: Start difference. First operand 17252 states and 21866 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-03 03:25:33,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:27:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:27:03,655 INFO L93 Difference]: Finished difference Result 17252 states and 21866 transitions. [2021-11-03 03:27:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:27:03,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-03 03:27:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:27:03,691 INFO L225 Difference]: With dead ends: 17252 [2021-11-03 03:27:03,691 INFO L226 Difference]: Without dead ends: 17248 [2021-11-03 03:27:03,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:27:03,705 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21833 mSDsluCounter, 21797 mSDsCounter, 0 mSdLazyCounter, 43348 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73103.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21833 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 133.48ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43348 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90687.57ms IncrementalHoareTripleChecker+Time [2021-11-03 03:27:03,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21833 Valid, 348 Invalid, 43375 Unknown, 0 Unchecked, 133.48ms Time], IncrementalHoareTripleChecker [26 Valid, 43348 Invalid, 1 Unknown, 0 Unchecked, 90687.57ms Time] [2021-11-03 03:27:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17248 states. [2021-11-03 03:27:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17248 to 17248. [2021-11-03 03:27:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17053 states have (on average 1.2717996833401748) internal successors, (21688), 17139 states have internal predecessors, (21688), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:27:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 21862 transitions. [2021-11-03 03:27:04,140 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 21862 transitions. Word has length 32 [2021-11-03 03:27:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:27:04,141 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 21862 transitions. [2021-11-03 03:27:04,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-03 03:27:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 21862 transitions. [2021-11-03 03:27:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 03:27:04,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:27:04,142 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] [2021-11-03 03:27:04,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 03:27:04,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:27:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:27:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1053939637, now seen corresponding path program 1 times [2021-11-03 03:27:04,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:27:04,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123661131] [2021-11-03 03:27:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:27:04,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:27:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:27:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:27:04,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:27:04,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123661131] [2021-11-03 03:27:04,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123661131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:27:04,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:27:04,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:27:04,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341548628] [2021-11-03 03:27:04,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:27:04,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:27:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:27:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:27:04,306 INFO L87 Difference]: Start difference. First operand 17248 states and 21862 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-03 03:27:06,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:28:28,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-03 03:28:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:28:42,324 INFO L93 Difference]: Finished difference Result 17248 states and 21862 transitions. [2021-11-03 03:28:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:28:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2021-11-03 03:28:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:28:42,349 INFO L225 Difference]: With dead ends: 17248 [2021-11-03 03:28:42,349 INFO L226 Difference]: Without dead ends: 17244 [2021-11-03 03:28:42,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:28:42,355 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21827 mSDsluCounter, 21795 mSDsCounter, 0 mSdLazyCounter, 43340 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76782.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21827 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.34ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96207.75ms IncrementalHoareTripleChecker+Time [2021-11-03 03:28:42,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21827 Valid, 348 Invalid, 43367 Unknown, 0 Unchecked, 120.34ms Time], IncrementalHoareTripleChecker [26 Valid, 43340 Invalid, 1 Unknown, 0 Unchecked, 96207.75ms Time] [2021-11-03 03:28:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17244 states. [2021-11-03 03:28:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17244 to 17244. [2021-11-03 03:28:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17244 states, 17051 states have (on average 1.2717142689578325) internal successors, (21684), 17135 states have internal predecessors, (21684), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:28:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17244 states to 17244 states and 21858 transitions. [2021-11-03 03:28:42,827 INFO L78 Accepts]: Start accepts. Automaton has 17244 states and 21858 transitions. Word has length 34 [2021-11-03 03:28:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:28:42,827 INFO L470 AbstractCegarLoop]: Abstraction has 17244 states and 21858 transitions. [2021-11-03 03:28:42,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-11-03 03:28:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17244 states and 21858 transitions. [2021-11-03 03:28:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 03:28:42,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:28:42,828 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] [2021-11-03 03:28:42,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 03:28:42,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:28:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:28:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash -774433640, now seen corresponding path program 1 times [2021-11-03 03:28:42,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:28:42,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781099793] [2021-11-03 03:28:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:28:42,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:28:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:28:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:28:42,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:28:42,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781099793] [2021-11-03 03:28:42,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781099793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:28:42,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:28:42,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:28:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299565869] [2021-11-03 03:28:42,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:28:42,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:28:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:28:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:28:42,996 INFO L87 Difference]: Start difference. First operand 17244 states and 21858 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-03 03:28:45,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:30:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:30:38,267 INFO L93 Difference]: Finished difference Result 17332 states and 21964 transitions. [2021-11-03 03:30:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:30:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-03 03:30:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:30:38,291 INFO L225 Difference]: With dead ends: 17332 [2021-11-03 03:30:38,291 INFO L226 Difference]: Without dead ends: 17328 [2021-11-03 03:30:38,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:30:38,296 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 19877 mSDsluCounter, 23721 mSDsCounter, 0 mSdLazyCounter, 45555 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88200.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19877 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 45619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 149.77ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 45555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113161.05ms IncrementalHoareTripleChecker+Time [2021-11-03 03:30:38,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19877 Valid, 348 Invalid, 45619 Unknown, 0 Unchecked, 149.77ms Time], IncrementalHoareTripleChecker [63 Valid, 45555 Invalid, 1 Unknown, 0 Unchecked, 113161.05ms Time] [2021-11-03 03:30:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2021-11-03 03:30:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17240. [2021-11-03 03:30:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17240 states, 17049 states have (on average 1.2716288345357498) internal successors, (21680), 17131 states have internal predecessors, (21680), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:30:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17240 states to 17240 states and 21854 transitions. [2021-11-03 03:30:38,728 INFO L78 Accepts]: Start accepts. Automaton has 17240 states and 21854 transitions. Word has length 36 [2021-11-03 03:30:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:30:38,728 INFO L470 AbstractCegarLoop]: Abstraction has 17240 states and 21854 transitions. [2021-11-03 03:30:38,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-03 03:30:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 17240 states and 21854 transitions. [2021-11-03 03:30:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 03:30:38,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:30:38,729 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] [2021-11-03 03:30:38,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 03:30:38,730 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:30:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:30:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1199528453, now seen corresponding path program 1 times [2021-11-03 03:30:38,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:30:38,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133384459] [2021-11-03 03:30:38,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:30:38,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:30:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:30:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:30:38,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:30:38,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133384459] [2021-11-03 03:30:38,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133384459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:30:38,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:30:38,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:30:38,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264896539] [2021-11-03 03:30:38,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:30:38,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:30:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:30:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:30:38,865 INFO L87 Difference]: Start difference. First operand 17240 states and 21854 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-03 03:30:40,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 03:32:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:32:37,282 INFO L93 Difference]: Finished difference Result 17240 states and 21854 transitions. [2021-11-03 03:32:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:32:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-03 03:32:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:32:37,310 INFO L225 Difference]: With dead ends: 17240 [2021-11-03 03:32:37,311 INFO L226 Difference]: Without dead ends: 17236 [2021-11-03 03:32:37,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:32:37,321 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 21815 mSDsluCounter, 21791 mSDsCounter, 0 mSdLazyCounter, 43324 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89368.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21815 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 43351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 150.01ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116347.21ms IncrementalHoareTripleChecker+Time [2021-11-03 03:32:37,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21815 Valid, 348 Invalid, 43351 Unknown, 0 Unchecked, 150.01ms Time], IncrementalHoareTripleChecker [26 Valid, 43324 Invalid, 1 Unknown, 0 Unchecked, 116347.21ms Time] [2021-11-03 03:32:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2021-11-03 03:32:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17236. [2021-11-03 03:32:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17236 states, 17047 states have (on average 1.2715433800668738) internal successors, (21676), 17127 states have internal predecessors, (21676), 87 states have call successors, (87), 22 states have call predecessors, (87), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-03 03:32:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 21850 transitions. [2021-11-03 03:32:37,926 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 21850 transitions. Word has length 38 [2021-11-03 03:32:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:32:37,927 INFO L470 AbstractCegarLoop]: Abstraction has 17236 states and 21850 transitions. [2021-11-03 03:32:37,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-03 03:32:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 21850 transitions. [2021-11-03 03:32:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 03:32:37,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 03:32:37,928 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] [2021-11-03 03:32:37,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 03:32:37,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [dc2114x_autoconfErr0ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr1ASSERT_VIOLATIONERROR_FUNCTION, dc2114x_autoconfErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 03:32:37,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:32:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1693750306, now seen corresponding path program 1 times [2021-11-03 03:32:37,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 03:32:37,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906554810] [2021-11-03 03:32:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:32:37,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:32:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:32:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:32:38,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 03:32:38,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906554810] [2021-11-03 03:32:38,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906554810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:32:38,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:32:38,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:32:38,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250524400] [2021-11-03 03:32:38,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:32:38,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 03:32:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:32:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:32:38,147 INFO L87 Difference]: Start difference. First operand 17236 states and 21850 transitions. Second operand has 4 states, 4 states have (on average 10.0) 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) [2021-11-03 03:32:40,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15