./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.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 bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 02:39:32,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 02:39:32,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 02:39:32,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 02:39:32,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 02:39:32,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 02:39:32,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 02:39:32,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 02:39:32,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 02:39:32,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 02:39:32,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 02:39:32,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 02:39:32,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 02:39:32,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 02:39:32,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 02:39:32,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 02:39:32,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 02:39:32,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 02:39:32,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 02:39:32,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 02:39:32,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 02:39:32,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 02:39:32,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 02:39:32,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 02:39:32,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 02:39:32,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 02:39:32,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 02:39:32,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 02:39:32,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 02:39:32,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 02:39:32,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 02:39:32,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 02:39:32,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 02:39:32,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 02:39:32,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 02:39:32,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 02:39:32,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 02:39:32,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 02:39:32,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 02:39:32,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 02:39:32,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 02:39:32,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 02:39:32,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 02:39:32,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 02:39:32,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 02:39:32,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 02:39:32,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 02:39:32,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 02:39:32,948 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 02:39:32,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 02:39:32,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 02:39:32,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 02:39:32,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 02:39:32,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 02:39:32,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 02:39:32,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 02:39:32,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 02:39:32,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 02:39:32,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 02:39:32,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 02:39:32,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 02:39:32,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:39:32,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 02:39:32,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 02:39:32,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 02:39:32,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 02:39:32,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 02:39:32,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 02:39:32,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 02:39:32,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 02:39:32,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 02:39:32,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 [2021-11-03 02:39:33,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 02:39:33,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 02:39:33,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 02:39:33,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 02:39:33,231 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 02:39:33,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-03 02:39:33,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786adbdf8/015cf0cefc4d4eafbcecc2a3af9ed506/FLAG8566929cc [2021-11-03 02:39:34,171 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 02:39:34,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-03 02:39:34,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786adbdf8/015cf0cefc4d4eafbcecc2a3af9ed506/FLAG8566929cc [2021-11-03 02:39:34,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/786adbdf8/015cf0cefc4d4eafbcecc2a3af9ed506 [2021-11-03 02:39:34,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 02:39:34,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 02:39:34,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 02:39:34,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 02:39:34,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 02:39:34,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:34" (1/1) ... [2021-11-03 02:39:34,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117aec83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:34, skipping insertion in model container [2021-11-03 02:39:34,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:39:34" (1/1) ... [2021-11-03 02:39:34,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 02:39:34,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 02:39:38,457 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-03 02:39:38,460 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-03 02:39:38,460 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-03 02:39:38,461 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-03 02:39:38,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:39:38,606 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 02:39:39,273 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-03 02:39:39,274 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-03 02:39:39,274 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-03 02:39:39,275 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_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-03 02:39:39,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:39:39,470 INFO L208 MainTranslator]: Completed translation [2021-11-03 02:39:39,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39 WrapperNode [2021-11-03 02:39:39,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 02:39:39,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 02:39:39,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 02:39:39,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 02:39:39,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:39,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:40,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 02:39:40,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 02:39:40,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 02:39:40,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 02:39:40,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:40,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:40,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:40,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:41,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:41,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:41,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:41,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 02:39:41,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 02:39:41,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 02:39:41,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 02:39:41,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (1/1) ... [2021-11-03 02:39:41,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:39:41,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 02:39:41,528 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 02:39:41,556 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 02:39:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-03 02:39:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-03 02:39:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 02:39:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-03 02:39:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 02:39:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 02:39:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-03 02:39:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-03 02:39:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 02:39:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 02:39:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-03 02:39:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-03 02:39:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 02:39:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 02:39:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 02:39:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 02:39:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 02:39:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 02:39:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-03 02:39:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-03 02:39:41,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 02:40:06,394 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-03 02:40:06,395 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 02:40:06,395 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 02:40:06,395 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-03 02:40:06,395 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-03 02:40:06,396 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-03 02:40:06,396 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 02:40:06,397 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-03 02:40:06,397 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 02:40:06,397 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-03 02:40:06,397 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 02:40:06,398 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 02:40:06,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 02:40:06,766 INFO L299 CfgBuilder]: Removed 5371 assume(true) statements. [2021-11-03 02:40:06,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:06 BoogieIcfgContainer [2021-11-03 02:40:06,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 02:40:06,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 02:40:06,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 02:40:06,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 02:40:06,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:39:34" (1/3) ... [2021-11-03 02:40:06,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a58c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:06, skipping insertion in model container [2021-11-03 02:40:06,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:39:39" (2/3) ... [2021-11-03 02:40:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a58c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:40:06, skipping insertion in model container [2021-11-03 02:40:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:40:06" (3/3) ... [2021-11-03 02:40:06,783 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-03 02:40:06,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 02:40:06,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-03 02:40:06,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 02:40:06,861 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 02:40:06,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-03 02:40:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 5496 states, 5423 states have (on average 1.3155080213903743) internal successors, (7134), 5476 states have internal predecessors, (7134), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-03 02:40:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-03 02:40:06,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:40:06,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:06,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:40:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:40:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1185104780, now seen corresponding path program 1 times [2021-11-03 02:40:07,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:40:07,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112977206] [2021-11-03 02:40:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:40:07,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:40:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:40:08,046 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 02:40:08,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:40:08,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112977206] [2021-11-03 02:40:08,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112977206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:40:08,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:40:08,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:40:08,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641219275] [2021-11-03 02:40:08,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:40:08,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:40:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:40:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:40:08,113 INFO L87 Difference]: Start difference. First operand has 5496 states, 5423 states have (on average 1.3155080213903743) internal successors, (7134), 5476 states have internal predecessors, (7134), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:40:10,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:40:22,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:40:27,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:40:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:40:37,316 INFO L93 Difference]: Finished difference Result 15264 states and 19948 transitions. [2021-11-03 02:40:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:40:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2021-11-03 02:40:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:40:37,389 INFO L225 Difference]: With dead ends: 15264 [2021-11-03 02:40:37,390 INFO L226 Difference]: Without dead ends: 9450 [2021-11-03 02:40:37,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:40:37,439 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 6181 mSDsluCounter, 6993 mSDsCounter, 0 mSdLazyCounter, 13142 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25489.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6181 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 13156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.51ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13142 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28245.63ms IncrementalHoareTripleChecker+Time [2021-11-03 02:40:37,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6181 Valid, 958 Invalid, 13156 Unknown, 0 Unchecked, 59.51ms Time], IncrementalHoareTripleChecker [11 Valid, 13142 Invalid, 3 Unknown, 0 Unchecked, 28245.63ms Time] [2021-11-03 02:40:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9450 states. [2021-11-03 02:40:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9450 to 9414. [2021-11-03 02:40:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9414 states, 9322 states have (on average 1.2396481441750697) internal successors, (11556), 9375 states have internal predecessors, (11556), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-03 02:40:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9414 states to 9414 states and 11616 transitions. [2021-11-03 02:40:37,823 INFO L78 Accepts]: Start accepts. Automaton has 9414 states and 11616 transitions. Word has length 165 [2021-11-03 02:40:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:40:37,827 INFO L470 AbstractCegarLoop]: Abstraction has 9414 states and 11616 transitions. [2021-11-03 02:40:37,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:40:37,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9414 states and 11616 transitions. [2021-11-03 02:40:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-03 02:40:37,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:40:37,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:37,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 02:40:37,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:40:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:40:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1198814604, now seen corresponding path program 1 times [2021-11-03 02:40:37,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:40:37,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335675708] [2021-11-03 02:40:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:40:37,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:40:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:40:38,459 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 02:40:38,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:40:38,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335675708] [2021-11-03 02:40:38,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335675708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:40:38,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:40:38,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:40:38,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177025931] [2021-11-03 02:40:38,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:40:38,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:40:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:40:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:40:38,467 INFO L87 Difference]: Start difference. First operand 9414 states and 11616 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 02:40:40,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:40:52,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:40:56,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:41:10,413 INFO L93 Difference]: Finished difference Result 27090 states and 33566 transitions. [2021-11-03 02:41:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:41:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2021-11-03 02:41:10,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:41:10,538 INFO L225 Difference]: With dead ends: 27090 [2021-11-03 02:41:10,538 INFO L226 Difference]: Without dead ends: 18072 [2021-11-03 02:41:10,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:41:10,576 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 5484 mSDsluCounter, 6106 mSDsCounter, 0 mSdLazyCounter, 12231 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27881.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5484 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12231 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31043.54ms IncrementalHoareTripleChecker+Time [2021-11-03 02:41:10,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5484 Valid, 80 Invalid, 12240 Unknown, 0 Unchecked, 34.09ms Time], IncrementalHoareTripleChecker [6 Valid, 12231 Invalid, 3 Unknown, 0 Unchecked, 31043.54ms Time] [2021-11-03 02:41:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18072 states. [2021-11-03 02:41:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18072 to 17750. [2021-11-03 02:41:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17750 states, 17620 states have (on average 1.2461975028376844) internal successors, (21958), 17673 states have internal predecessors, (21958), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (70), 60 states have call predecessors, (70), 60 states have call successors, (70) [2021-11-03 02:41:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17750 states to 17750 states and 22088 transitions. [2021-11-03 02:41:11,090 INFO L78 Accepts]: Start accepts. Automaton has 17750 states and 22088 transitions. Word has length 173 [2021-11-03 02:41:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:41:11,092 INFO L470 AbstractCegarLoop]: Abstraction has 17750 states and 22088 transitions. [2021-11-03 02:41:11,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 02:41:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 17750 states and 22088 transitions. [2021-11-03 02:41:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-03 02:41:11,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:41:11,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:11,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 02:41:11,097 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:41:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:41:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2033153188, now seen corresponding path program 1 times [2021-11-03 02:41:11,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:41:11,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840848767] [2021-11-03 02:41:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:41:11,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:41:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:41:11,886 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 02:41:11,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:41:11,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840848767] [2021-11-03 02:41:11,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840848767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:41:11,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:41:11,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:41:11,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072873385] [2021-11-03 02:41:11,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:41:11,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:41:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:41:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:41:11,890 INFO L87 Difference]: Start difference. First operand 17750 states and 22088 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 02:41:14,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:24,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:28,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:43,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:41:43,052 INFO L93 Difference]: Finished difference Result 49522 states and 61930 transitions. [2021-11-03 02:41:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:41:43,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 175 [2021-11-03 02:41:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:41:43,185 INFO L225 Difference]: With dead ends: 49522 [2021-11-03 02:41:43,185 INFO L226 Difference]: Without dead ends: 32168 [2021-11-03 02:41:43,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:41:43,258 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 4811 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 12599 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26843.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.32ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12599 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30204.87ms IncrementalHoareTripleChecker+Time [2021-11-03 02:41:43,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4811 Valid, 75 Invalid, 12623 Unknown, 0 Unchecked, 35.32ms Time], IncrementalHoareTripleChecker [21 Valid, 12599 Invalid, 3 Unknown, 0 Unchecked, 30204.87ms Time] [2021-11-03 02:41:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32168 states. [2021-11-03 02:41:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32168 to 32070. [2021-11-03 02:41:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32070 states, 31868 states have (on average 1.2517258692104933) internal successors, (39890), 31921 states have internal predecessors, (39890), 116 states have call successors, (116), 32 states have call predecessors, (116), 32 states have return successors, (134), 116 states have call predecessors, (134), 116 states have call successors, (134) [2021-11-03 02:41:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32070 states to 32070 states and 40140 transitions. [2021-11-03 02:41:44,072 INFO L78 Accepts]: Start accepts. Automaton has 32070 states and 40140 transitions. Word has length 175 [2021-11-03 02:41:44,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:41:44,073 INFO L470 AbstractCegarLoop]: Abstraction has 32070 states and 40140 transitions. [2021-11-03 02:41:44,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 02:41:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 32070 states and 40140 transitions. [2021-11-03 02:41:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-03 02:41:44,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:41:44,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:44,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 02:41:44,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:41:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:41:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1868980924, now seen corresponding path program 1 times [2021-11-03 02:41:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:41:44,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910054100] [2021-11-03 02:41:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:41:44,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:41:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:41:44,546 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 02:41:44,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:41:44,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910054100] [2021-11-03 02:41:44,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910054100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:41:44,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:41:44,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:41:44,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60289768] [2021-11-03 02:41:44,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:41:44,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:41:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:41:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:41:44,549 INFO L87 Difference]: Start difference. First operand 32070 states and 40140 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 02:41:46,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:55,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:41:59,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:42:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:42:16,647 INFO L93 Difference]: Finished difference Result 93566 states and 117486 transitions. [2021-11-03 02:42:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:42:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 178 [2021-11-03 02:42:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:42:16,916 INFO L225 Difference]: With dead ends: 93566 [2021-11-03 02:42:16,916 INFO L226 Difference]: Without dead ends: 61892 [2021-11-03 02:42:17,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:42:17,050 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 5444 mSDsluCounter, 6063 mSDsCounter, 0 mSdLazyCounter, 12164 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27201.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5444 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.26ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 12164 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30770.40ms IncrementalHoareTripleChecker+Time [2021-11-03 02:42:17,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5444 Valid, 95 Invalid, 12181 Unknown, 0 Unchecked, 33.26ms Time], IncrementalHoareTripleChecker [14 Valid, 12164 Invalid, 3 Unknown, 0 Unchecked, 30770.40ms Time] [2021-11-03 02:42:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61892 states. [2021-11-03 02:42:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61892 to 61198. [2021-11-03 02:42:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61198 states, 60848 states have (on average 1.2541743360504864) internal successors, (76314), 60901 states have internal predecessors, (76314), 232 states have call successors, (232), 64 states have call predecessors, (232), 64 states have return successors, (428), 232 states have call predecessors, (428), 232 states have call successors, (428) [2021-11-03 02:42:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61198 states to 61198 states and 76974 transitions. [2021-11-03 02:42:18,631 INFO L78 Accepts]: Start accepts. Automaton has 61198 states and 76974 transitions. Word has length 178 [2021-11-03 02:42:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:42:18,632 INFO L470 AbstractCegarLoop]: Abstraction has 61198 states and 76974 transitions. [2021-11-03 02:42:18,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 02:42:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 61198 states and 76974 transitions. [2021-11-03 02:42:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 02:42:18,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:42:18,641 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:18,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 02:42:18,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:42:18,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:42:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1566196920, now seen corresponding path program 1 times [2021-11-03 02:42:18,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:42:18,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785553632] [2021-11-03 02:42:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:42:18,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:42:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:42:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:42:19,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:42:19,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785553632] [2021-11-03 02:42:19,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785553632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:42:19,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:42:19,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:42:19,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943140949] [2021-11-03 02:42:19,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:42:19,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:42:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:42:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:42:19,564 INFO L87 Difference]: Start difference. First operand 61198 states and 76974 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 02:42:21,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:42:38,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:42:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:42:55,552 INFO L93 Difference]: Finished difference Result 122028 states and 153593 transitions. [2021-11-03 02:42:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:42:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 198 [2021-11-03 02:42:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:42:55,882 INFO L225 Difference]: With dead ends: 122028 [2021-11-03 02:42:55,883 INFO L226 Difference]: Without dead ends: 91308 [2021-11-03 02:42:56,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:42:56,012 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 5525 mSDsluCounter, 6070 mSDsCounter, 0 mSdLazyCounter, 16309 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29752.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5525 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 16321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.99ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16309 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33939.22ms IncrementalHoareTripleChecker+Time [2021-11-03 02:42:56,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5525 Valid, 88 Invalid, 16321 Unknown, 0 Unchecked, 38.99ms Time], IncrementalHoareTripleChecker [10 Valid, 16309 Invalid, 2 Unknown, 0 Unchecked, 33939.22ms Time] [2021-11-03 02:42:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91308 states. [2021-11-03 02:42:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91308 to 91195. [2021-11-03 02:42:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91195 states, 90697 states have (on average 1.2547162530182916) internal successors, (113799), 90750 states have internal predecessors, (113799), 348 states have call successors, (348), 96 states have call predecessors, (348), 96 states have return successors, (642), 348 states have call predecessors, (642), 348 states have call successors, (642) [2021-11-03 02:42:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91195 states to 91195 states and 114789 transitions. [2021-11-03 02:42:58,635 INFO L78 Accepts]: Start accepts. Automaton has 91195 states and 114789 transitions. Word has length 198 [2021-11-03 02:42:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:42:58,637 INFO L470 AbstractCegarLoop]: Abstraction has 91195 states and 114789 transitions. [2021-11-03 02:42:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 02:42:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 91195 states and 114789 transitions. [2021-11-03 02:42:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 02:42:58,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:42:58,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:58,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 02:42:58,651 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:42:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:42:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1448906698, now seen corresponding path program 1 times [2021-11-03 02:42:58,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:42:58,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845153276] [2021-11-03 02:42:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:42:58,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:42:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:42:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:42:59,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:42:59,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845153276] [2021-11-03 02:42:59,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845153276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:42:59,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:42:59,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:42:59,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500510145] [2021-11-03 02:42:59,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:42:59,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:42:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:42:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:42:59,169 INFO L87 Difference]: Start difference. First operand 91195 states and 114789 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 02:43:01,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:43:13,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:43:19,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:43:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:43:40,775 INFO L93 Difference]: Finished difference Result 182014 states and 229207 transitions. [2021-11-03 02:43:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:43:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 198 [2021-11-03 02:43:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:43:41,416 INFO L225 Difference]: With dead ends: 182014 [2021-11-03 02:43:41,417 INFO L226 Difference]: Without dead ends: 121297 [2021-11-03 02:43:41,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:43:41,587 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 5477 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 17680 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33902.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 17692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.57ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17680 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39041.01ms IncrementalHoareTripleChecker+Time [2021-11-03 02:43:41,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5477 Valid, 90 Invalid, 17692 Unknown, 0 Unchecked, 40.57ms Time], IncrementalHoareTripleChecker [9 Valid, 17680 Invalid, 3 Unknown, 0 Unchecked, 39041.01ms Time] [2021-11-03 02:43:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121297 states. [2021-11-03 02:43:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121297 to 121261. [2021-11-03 02:43:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121261 states, 120615 states have (on average 1.2548439248849645) internal successors, (151353), 120668 states have internal predecessors, (151353), 464 states have call successors, (464), 128 states have call predecessors, (464), 128 states have return successors, (856), 464 states have call predecessors, (856), 464 states have call successors, (856) [2021-11-03 02:43:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121261 states to 121261 states and 152673 transitions. [2021-11-03 02:43:44,514 INFO L78 Accepts]: Start accepts. Automaton has 121261 states and 152673 transitions. Word has length 198 [2021-11-03 02:43:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:43:44,516 INFO L470 AbstractCegarLoop]: Abstraction has 121261 states and 152673 transitions. [2021-11-03 02:43:44,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 02:43:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 121261 states and 152673 transitions. [2021-11-03 02:43:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-03 02:43:44,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:43:44,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:44,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 02:43:44,527 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:43:44,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:43:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1460364511, now seen corresponding path program 1 times [2021-11-03 02:43:44,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:43:44,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108011414] [2021-11-03 02:43:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:43:44,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:43:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:43:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 02:43:45,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:43:45,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108011414] [2021-11-03 02:43:45,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108011414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:43:45,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:43:45,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:43:45,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148593515] [2021-11-03 02:43:45,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 02:43:45,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:43:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 02:43:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 02:43:45,322 INFO L87 Difference]: Start difference. First operand 121261 states and 152673 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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 02:43:47,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:44:00,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:44:06,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:44:22,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:44:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:44:33,875 INFO L93 Difference]: Finished difference Result 212044 states and 267001 transitions. [2021-11-03 02:44:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 02:44:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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 203 [2021-11-03 02:44:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:44:34,600 INFO L225 Difference]: With dead ends: 212044 [2021-11-03 02:44:34,600 INFO L226 Difference]: Without dead ends: 212038 [2021-11-03 02:44:34,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 02:44:34,695 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 5962 mSDsluCounter, 11767 mSDsCounter, 0 mSdLazyCounter, 17887 mSolverCounterSat, 67 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38906.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5962 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 17958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.80ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 17887 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44913.28ms IncrementalHoareTripleChecker+Time [2021-11-03 02:44:34,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5962 Valid, 120 Invalid, 17958 Unknown, 0 Unchecked, 101.80ms Time], IncrementalHoareTripleChecker [67 Valid, 17887 Invalid, 4 Unknown, 0 Unchecked, 44913.28ms Time] [2021-11-03 02:44:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212038 states. [2021-11-03 02:44:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212038 to 211870. [2021-11-03 02:44:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211870 states, 210780 states have (on average 1.2550431729765632) internal successors, (264538), 210833 states have internal predecessors, (264538), 812 states have call successors, (812), 224 states have call predecessors, (812), 224 states have return successors, (1498), 812 states have call predecessors, (1498), 812 states have call successors, (1498) [2021-11-03 02:44:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211870 states to 211870 states and 266848 transitions. [2021-11-03 02:44:40,218 INFO L78 Accepts]: Start accepts. Automaton has 211870 states and 266848 transitions. Word has length 203 [2021-11-03 02:44:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:44:40,219 INFO L470 AbstractCegarLoop]: Abstraction has 211870 states and 266848 transitions. [2021-11-03 02:44:40,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 3 states have internal predecessors, (190), 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 02:44:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 211870 states and 266848 transitions. [2021-11-03 02:44:40,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-03 02:44:40,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:44:40,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:40,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 02:44:40,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:44:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:44:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1044209252, now seen corresponding path program 1 times [2021-11-03 02:44:40,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:44:40,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744688187] [2021-11-03 02:44:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:44:40,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:44:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:44:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 02:44:40,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:44:40,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744688187] [2021-11-03 02:44:40,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744688187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:44:40,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:44:40,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:44:40,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14212179] [2021-11-03 02:44:40,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 02:44:40,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:44:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 02:44:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 02:44:40,975 INFO L87 Difference]: Start difference. First operand 211870 states and 266848 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 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 02:44:43,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:44:56,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:45:01,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-03 02:45:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:45:31,636 INFO L93 Difference]: Finished difference Result 332729 states and 419070 transitions. [2021-11-03 02:45:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 02:45:31,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 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 205 [2021-11-03 02:45:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:45:32,909 INFO L225 Difference]: With dead ends: 332729 [2021-11-03 02:45:32,910 INFO L226 Difference]: Without dead ends: 332723 [2021-11-03 02:45:33,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 02:45:33,033 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 5950 mSDsluCounter, 11765 mSDsCounter, 0 mSdLazyCounter, 17887 mSolverCounterSat, 70 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38341.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5950 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 17960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.24ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 17887 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45058.12ms IncrementalHoareTripleChecker+Time [2021-11-03 02:45:33,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5950 Valid, 120 Invalid, 17960 Unknown, 0 Unchecked, 77.24ms Time], IncrementalHoareTripleChecker [70 Valid, 17887 Invalid, 3 Unknown, 0 Unchecked, 45058.12ms Time] [2021-11-03 02:45:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332723 states. [2021-11-03 02:45:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332723 to 332567. [2021-11-03 02:45:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332567 states, 330885 states have (on average 1.2551158257400608) internal successors, (415299), 330938 states have internal predecessors, (415299), 1276 states have call successors, (1276), 352 states have call predecessors, (1276), 352 states have return successors, (2354), 1276 states have call predecessors, (2354), 1276 states have call successors, (2354) [2021-11-03 02:45:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332567 states to 332567 states and 418929 transitions. [2021-11-03 02:45:42,280 INFO L78 Accepts]: Start accepts. Automaton has 332567 states and 418929 transitions. Word has length 205 [2021-11-03 02:45:42,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:45:42,281 INFO L470 AbstractCegarLoop]: Abstraction has 332567 states and 418929 transitions. [2021-11-03 02:45:42,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 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 02:45:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 332567 states and 418929 transitions. [2021-11-03 02:45:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-03 02:45:42,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:45:42,298 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:42,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 02:45:42,298 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-03 02:45:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:45:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1537057241, now seen corresponding path program 1 times [2021-11-03 02:45:42,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:45:42,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640822810] [2021-11-03 02:45:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:45:42,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:45:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:45:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 02:45:42,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:45:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640822810] [2021-11-03 02:45:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640822810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:45:42,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:45:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:45:42,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622934208] [2021-11-03 02:45:42,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 02:45:42,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:45:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 02:45:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 02:45:42,930 INFO L87 Difference]: Start difference. First operand 332567 states and 418929 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 02:45:45,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:46:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:46:12,248 INFO L93 Difference]: Finished difference Result 332567 states and 418929 transitions. [2021-11-03 02:46:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 02:46:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 207 [2021-11-03 02:46:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:46:13,393 INFO L225 Difference]: With dead ends: 332567 [2021-11-03 02:46:13,393 INFO L226 Difference]: Without dead ends: 332561 [2021-11-03 02:46:13,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 02:46:13,549 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 5956 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 12196 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20002.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5956 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 12234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.58ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 12196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23640.91ms IncrementalHoareTripleChecker+Time [2021-11-03 02:46:13,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5956 Valid, 60 Invalid, 12234 Unknown, 0 Unchecked, 41.58ms Time], IncrementalHoareTripleChecker [37 Valid, 12196 Invalid, 1 Unknown, 0 Unchecked, 23640.91ms Time] [2021-11-03 02:46:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332561 states.