./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:26:56,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:26:56,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:26:56,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:26:56,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:26:56,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:26:56,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:26:56,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:26:56,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:26:56,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:26:56,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:26:56,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:26:56,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:26:56,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:26:56,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:26:56,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:26:56,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:26:56,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:26:56,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:26:56,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:26:56,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:26:56,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:26:56,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:26:56,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:26:56,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:26:56,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:26:56,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:26:56,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:26:56,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:26:56,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:26:56,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:26:56,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:26:56,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:26:56,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:26:56,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:26:56,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:26:56,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:26:56,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:26:56,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:26:56,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:26:56,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:26:56,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:26:56,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:26:56,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:26:56,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:26:56,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:26:56,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:26:56,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:26:56,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:26:56,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:26:56,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:26:56,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:26:56,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:26:56,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2021-11-07 17:26:56,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:26:56,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:26:56,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:26:56,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:26:56,692 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:26:56,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-07 17:26:56,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6fa652e/d463cca907d744629e4c4ad1e9350821/FLAG1bff9624d [2021-11-07 17:26:57,381 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:26:57,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-07 17:26:57,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6fa652e/d463cca907d744629e4c4ad1e9350821/FLAG1bff9624d [2021-11-07 17:26:57,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6fa652e/d463cca907d744629e4c4ad1e9350821 [2021-11-07 17:26:57,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:26:57,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:26:57,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:26:57,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:26:57,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:26:57,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:26:57" (1/1) ... [2021-11-07 17:26:57,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be1b921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:57, skipping insertion in model container [2021-11-07 17:26:57,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:26:57" (1/1) ... [2021-11-07 17:26:57,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:26:57,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:26:59,018 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-11-07 17:26:59,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-11-07 17:26:59,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-11-07 17:26:59,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-11-07 17:26:59,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:26:59,069 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:26:59,324 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-11-07 17:26:59,324 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-11-07 17:26:59,325 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-11-07 17:26:59,325 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-11-07 17:26:59,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:26:59,433 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:26:59,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59 WrapperNode [2021-11-07 17:26:59,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:26:59,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:26:59,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:26:59,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:26:59,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:26:59,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:00,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:27:00,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:27:00,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:27:00,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:27:00,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:00,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:01,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:01,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:02,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:02,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:02,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:02,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:27:02,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:27:02,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:27:02,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:27:02,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (1/1) ... [2021-11-07 17:27:02,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:27:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:27:02,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 17:27:02,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 17:27:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:27:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:27:02,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:27:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:28:08,542 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:28:08,542 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 17:28:08,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 17:28:08,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 17:28:08,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:28:08,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:28:08,544 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 17:28:08,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:28:08,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 17:28:08,547 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:28:08,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:28:08,608 INFO L299 CfgBuilder]: Removed 19368 assume(true) statements. [2021-11-07 17:28:08,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:08 BoogieIcfgContainer [2021-11-07 17:28:08,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:28:08,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:28:08,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:28:08,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:28:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:26:57" (1/3) ... [2021-11-07 17:28:08,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4595d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:08, skipping insertion in model container [2021-11-07 17:28:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:59" (2/3) ... [2021-11-07 17:28:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4595d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:08, skipping insertion in model container [2021-11-07 17:28:08,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:08" (3/3) ... [2021-11-07 17:28:08,625 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-07 17:28:08,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:28:08,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-07 17:28:08,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:28:08,689 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 17:28:08,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-07 17:28:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 17:28:08,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:08,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:08,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash -481796582, now seen corresponding path program 1 times [2021-11-07 17:28:08,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:08,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874161279] [2021-11-07 17:28:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:08,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:09,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:09,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874161279] [2021-11-07 17:28:09,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874161279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:09,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:09,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:09,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345213294] [2021-11-07 17:28:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:09,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:09,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:09,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:09,418 INFO L87 Difference]: Start difference. First operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:11,500 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 [] [2021-11-07 17:28:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:12,790 INFO L93 Difference]: Finished difference Result 38703 states and 47341 transitions. [2021-11-07 17:28:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:12,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-07 17:28:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:12,894 INFO L225 Difference]: With dead ends: 38703 [2021-11-07 17:28:12,895 INFO L226 Difference]: Without dead ends: 24229 [2021-11-07 17:28:12,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:12,933 INFO L933 BasicCegarLoop]: 15847 mSDtfsCounter, 15592 mSDsluCounter, 15808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15592 SdHoareTripleChecker+Valid, 31655 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.19ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2225.21ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:12,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15592 Valid, 31655 Invalid, 14 Unknown, 0 Unchecked, 57.19ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2225.21ms Time] [2021-11-07 17:28:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24229 states. [2021-11-07 17:28:13,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24229 to 24213. [2021-11-07 17:28:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24213 states, 24181 states have (on average 1.1697200281212523) internal successors, (28285), 24212 states have internal predecessors, (28285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24213 states to 24213 states and 28285 transitions. [2021-11-07 17:28:13,740 INFO L78 Accepts]: Start accepts. Automaton has 24213 states and 28285 transitions. Word has length 45 [2021-11-07 17:28:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:13,740 INFO L470 AbstractCegarLoop]: Abstraction has 24213 states and 28285 transitions. [2021-11-07 17:28:13,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 24213 states and 28285 transitions. [2021-11-07 17:28:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 17:28:13,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:13,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:13,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:28:13,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash -38719139, now seen corresponding path program 1 times [2021-11-07 17:28:13,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:13,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167471363] [2021-11-07 17:28:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:13,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:13,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:13,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167471363] [2021-11-07 17:28:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167471363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:13,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:13,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837852397] [2021-11-07 17:28:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:13,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:13,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:13,951 INFO L87 Difference]: Start difference. First operand 24213 states and 28285 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:16,015 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 [] [2021-11-07 17:28:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:18,144 INFO L93 Difference]: Finished difference Result 72105 states and 84271 transitions. [2021-11-07 17:28:18,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-07 17:28:18,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:18,392 INFO L225 Difference]: With dead ends: 72105 [2021-11-07 17:28:18,393 INFO L226 Difference]: Without dead ends: 47976 [2021-11-07 17:28:18,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:18,441 INFO L933 BasicCegarLoop]: 14184 mSDtfsCounter, 13978 mSDsluCounter, 14013 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 98 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2924.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13978 SdHoareTripleChecker+Valid, 28197 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.97ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3128.69ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:18,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13978 Valid, 28197 Invalid, 277 Unknown, 0 Unchecked, 40.97ms Time], IncrementalHoareTripleChecker [98 Valid, 178 Invalid, 1 Unknown, 0 Unchecked, 3128.69ms Time] [2021-11-07 17:28:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47976 states. [2021-11-07 17:28:19,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47976 to 43994. [2021-11-07 17:28:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43994 states, 43962 states have (on average 1.1756516991947592) internal successors, (51684), 43993 states have internal predecessors, (51684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43994 states to 43994 states and 51684 transitions. [2021-11-07 17:28:19,570 INFO L78 Accepts]: Start accepts. Automaton has 43994 states and 51684 transitions. Word has length 46 [2021-11-07 17:28:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:19,571 INFO L470 AbstractCegarLoop]: Abstraction has 43994 states and 51684 transitions. [2021-11-07 17:28:19,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 43994 states and 51684 transitions. [2021-11-07 17:28:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 17:28:19,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:19,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:19,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:28:19,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1141204786, now seen corresponding path program 1 times [2021-11-07 17:28:19,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:19,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323956387] [2021-11-07 17:28:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:19,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:19,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:19,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323956387] [2021-11-07 17:28:19,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323956387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:19,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:19,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:19,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847397619] [2021-11-07 17:28:19,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:19,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:19,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:19,810 INFO L87 Difference]: Start difference. First operand 43994 states and 51684 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:21,870 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 [] [2021-11-07 17:28:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:23,385 INFO L93 Difference]: Finished difference Result 91366 states and 107642 transitions. [2021-11-07 17:28:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:23,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-07 17:28:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:23,521 INFO L225 Difference]: With dead ends: 91366 [2021-11-07 17:28:23,522 INFO L226 Difference]: Without dead ends: 47456 [2021-11-07 17:28:23,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:23,614 INFO L933 BasicCegarLoop]: 14228 mSDtfsCounter, 1240 mSDsluCounter, 14164 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2516.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 28392 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.36ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2669.84ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:23,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 28392 Invalid, 153 Unknown, 0 Unchecked, 17.36ms Time], IncrementalHoareTripleChecker [31 Valid, 121 Invalid, 1 Unknown, 0 Unchecked, 2669.84ms Time] [2021-11-07 17:28:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47456 states. [2021-11-07 17:28:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47456 to 47314. [2021-11-07 17:28:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47314 states, 47282 states have (on average 1.1801954232054481) internal successors, (55802), 47313 states have internal predecessors, (55802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47314 states to 47314 states and 55802 transitions. [2021-11-07 17:28:24,683 INFO L78 Accepts]: Start accepts. Automaton has 47314 states and 55802 transitions. Word has length 50 [2021-11-07 17:28:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:24,685 INFO L470 AbstractCegarLoop]: Abstraction has 47314 states and 55802 transitions. [2021-11-07 17:28:24,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 47314 states and 55802 transitions. [2021-11-07 17:28:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 17:28:24,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:24,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:24,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:28:24,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:24,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1032539779, now seen corresponding path program 1 times [2021-11-07 17:28:24,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:24,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951236385] [2021-11-07 17:28:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:24,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:24,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:24,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951236385] [2021-11-07 17:28:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951236385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:24,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:24,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:24,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638356416] [2021-11-07 17:28:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:24,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:24,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:24,893 INFO L87 Difference]: Start difference. First operand 47314 states and 55802 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:26,962 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 [] [2021-11-07 17:28:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:29,852 INFO L93 Difference]: Finished difference Result 138950 states and 163630 transitions. [2021-11-07 17:28:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-07 17:28:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:30,080 INFO L225 Difference]: With dead ends: 138950 [2021-11-07 17:28:30,080 INFO L226 Difference]: Without dead ends: 91720 [2021-11-07 17:28:30,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:30,182 INFO L933 BasicCegarLoop]: 14183 mSDtfsCounter, 13671 mSDsluCounter, 13910 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3102.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13671 SdHoareTripleChecker+Valid, 28093 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.23ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3308.46ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:30,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13671 Valid, 28093 Invalid, 313 Unknown, 0 Unchecked, 29.23ms Time], IncrementalHoareTripleChecker [97 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 3308.46ms Time] [2021-11-07 17:28:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91720 states. [2021-11-07 17:28:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91720 to 87766. [2021-11-07 17:28:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87766 states, 87734 states have (on average 1.1797250780769144) internal successors, (103502), 87765 states have internal predecessors, (103502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87766 states to 87766 states and 103502 transitions. [2021-11-07 17:28:32,411 INFO L78 Accepts]: Start accepts. Automaton has 87766 states and 103502 transitions. Word has length 60 [2021-11-07 17:28:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:32,411 INFO L470 AbstractCegarLoop]: Abstraction has 87766 states and 103502 transitions. [2021-11-07 17:28:32,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 87766 states and 103502 transitions. [2021-11-07 17:28:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 17:28:32,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:32,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:32,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:28:32,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1955602062, now seen corresponding path program 1 times [2021-11-07 17:28:32,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:32,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809927302] [2021-11-07 17:28:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:32,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:32,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:32,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809927302] [2021-11-07 17:28:32,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809927302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:32,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:32,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:32,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647573618] [2021-11-07 17:28:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:32,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:32,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:32,634 INFO L87 Difference]: Start difference. First operand 87766 states and 103502 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:34,707 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 [] [2021-11-07 17:28:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:36,930 INFO L93 Difference]: Finished difference Result 172621 states and 203585 transitions. [2021-11-07 17:28:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-07 17:28:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:37,135 INFO L225 Difference]: With dead ends: 172621 [2021-11-07 17:28:37,136 INFO L226 Difference]: Without dead ends: 84939 [2021-11-07 17:28:37,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:37,282 INFO L933 BasicCegarLoop]: 27657 mSDtfsCounter, 13603 mSDsluCounter, 14165 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2275.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13603 SdHoareTripleChecker+Valid, 41822 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.45ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2391.81ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:37,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13603 Valid, 41822 Invalid, 74 Unknown, 0 Unchecked, 29.45ms Time], IncrementalHoareTripleChecker [14 Valid, 59 Invalid, 1 Unknown, 0 Unchecked, 2391.81ms Time] [2021-11-07 17:28:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84939 states. [2021-11-07 17:28:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84939 to 84833. [2021-11-07 17:28:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84833 states, 84801 states have (on average 1.1790073230268512) internal successors, (99981), 84832 states have internal predecessors, (99981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84833 states to 84833 states and 99981 transitions. [2021-11-07 17:28:39,006 INFO L78 Accepts]: Start accepts. Automaton has 84833 states and 99981 transitions. Word has length 66 [2021-11-07 17:28:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:39,007 INFO L470 AbstractCegarLoop]: Abstraction has 84833 states and 99981 transitions. [2021-11-07 17:28:39,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 84833 states and 99981 transitions. [2021-11-07 17:28:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 17:28:39,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:39,008 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:39,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:28:39,008 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2000051397, now seen corresponding path program 1 times [2021-11-07 17:28:39,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:39,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698377718] [2021-11-07 17:28:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:39,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:39,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:39,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698377718] [2021-11-07 17:28:39,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698377718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:39,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:39,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:39,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846921314] [2021-11-07 17:28:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:39,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:39,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:39,198 INFO L87 Difference]: Start difference. First operand 84833 states and 99981 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:41,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:44,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:44,005 INFO L93 Difference]: Finished difference Result 253735 states and 299085 transitions. [2021-11-07 17:28:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:44,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 17:28:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:44,349 INFO L225 Difference]: With dead ends: 253735 [2021-11-07 17:28:44,349 INFO L226 Difference]: Without dead ends: 169051 [2021-11-07 17:28:44,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:44,507 INFO L933 BasicCegarLoop]: 14325 mSDtfsCounter, 14082 mSDsluCounter, 14194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2289.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14082 SdHoareTripleChecker+Valid, 28519 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2341.34ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:44,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14082 Valid, 28519 Invalid, 10 Unknown, 0 Unchecked, 22.19ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2341.34ms Time] [2021-11-07 17:28:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169051 states. [2021-11-07 17:28:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169051 to 169005. [2021-11-07 17:28:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169005 states, 168973 states have (on average 1.178975339255384) internal successors, (199215), 169004 states have internal predecessors, (199215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169005 states to 169005 states and 199215 transitions. [2021-11-07 17:28:48,267 INFO L78 Accepts]: Start accepts. Automaton has 169005 states and 199215 transitions. Word has length 70 [2021-11-07 17:28:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:48,268 INFO L470 AbstractCegarLoop]: Abstraction has 169005 states and 199215 transitions. [2021-11-07 17:28:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 169005 states and 199215 transitions. [2021-11-07 17:28:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 17:28:48,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:48,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:48,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:28:48,269 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 17:28:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:48,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2036750461, now seen corresponding path program 1 times [2021-11-07 17:28:48,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:48,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690275050] [2021-11-07 17:28:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:48,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 17:28:48,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:48,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690275050] [2021-11-07 17:28:48,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690275050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:48,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:48,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:48,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098027631] [2021-11-07 17:28:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:48,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:48,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:48,468 INFO L87 Difference]: Start difference. First operand 169005 states and 199215 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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)