./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 00:33:11,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 00:33:11,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 00:33:11,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 00:33:11,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 00:33:11,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 00:33:11,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 00:33:11,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 00:33:11,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 00:33:11,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 00:33:11,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 00:33:11,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 00:33:11,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 00:33:11,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 00:33:11,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 00:33:11,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 00:33:11,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 00:33:11,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 00:33:11,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 00:33:11,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 00:33:11,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 00:33:11,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 00:33:11,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 00:33:11,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 00:33:11,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 00:33:11,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 00:33:11,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 00:33:11,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 00:33:11,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 00:33:11,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 00:33:11,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 00:33:11,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 00:33:11,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 00:33:11,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 00:33:11,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 00:33:11,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 00:33:11,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 00:33:11,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 00:33:11,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 00:33:11,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 00:33:11,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 00:33:11,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 00:33:11,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 00:33:12,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 00:33:12,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 00:33:12,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 00:33:12,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 00:33:12,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 00:33:12,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 00:33:12,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 00:33:12,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 00:33:12,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 00:33:12,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 00:33:12,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 00:33:12,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 00:33:12,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 00:33:12,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 00:33:12,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 00:33:12,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 00:33:12,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:33:12,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 00:33:12,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 00:33:12,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 00:33:12,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 00:33:12,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 00:33:12,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 00:33:12,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 00:33:12,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 00:33:12,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2022-07-23 00:33:12,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 00:33:12,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 00:33:12,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 00:33:12,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 00:33:12,183 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 00:33:12,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-23 00:33:12,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d6d0cd5/f357bb794cb0415b893a998258e708f0/FLAG6dd561a11 [2022-07-23 00:33:12,881 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 00:33:12,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-23 00:33:12,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d6d0cd5/f357bb794cb0415b893a998258e708f0/FLAG6dd561a11 [2022-07-23 00:33:13,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d6d0cd5/f357bb794cb0415b893a998258e708f0 [2022-07-23 00:33:13,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 00:33:13,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 00:33:13,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 00:33:13,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 00:33:13,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 00:33:13,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:33:13" (1/1) ... [2022-07-23 00:33:13,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b391ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:13, skipping insertion in model container [2022-07-23 00:33:13,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 12:33:13" (1/1) ... [2022-07-23 00:33:13,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 00:33:13,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 00:33:13,686 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-23 00:33:14,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-23 00:33:14,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:33:14,577 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 00:33:14,688 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-23 00:33:14,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-23 00:33:15,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 00:33:15,042 INFO L208 MainTranslator]: Completed translation [2022-07-23 00:33:15,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15 WrapperNode [2022-07-23 00:33:15,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 00:33:15,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 00:33:15,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 00:33:15,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 00:33:15,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,237 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2022-07-23 00:33:15,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 00:33:15,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 00:33:15,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 00:33:15,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 00:33:15,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 00:33:15,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 00:33:15,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 00:33:15,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 00:33:15,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (1/1) ... [2022-07-23 00:33:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 00:33:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 00:33:15,444 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) [2022-07-23 00:33:15,472 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 [2022-07-23 00:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-23 00:33:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-23 00:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2022-07-23 00:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-23 00:33:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-23 00:33:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2022-07-23 00:33:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2022-07-23 00:33:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-23 00:33:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-23 00:33:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 00:33:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 00:33:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 00:33:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 00:33:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 00:33:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-07-23 00:33:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-07-23 00:33:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-23 00:33:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-23 00:33:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-23 00:33:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-23 00:33:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2022-07-23 00:33:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2022-07-23 00:33:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-07-23 00:33:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-07-23 00:33:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2022-07-23 00:33:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2022-07-23 00:33:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 00:33:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 00:33:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2022-07-23 00:33:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2022-07-23 00:33:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-23 00:33:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-23 00:33:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-07-23 00:33:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-07-23 00:33:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2022-07-23 00:33:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2022-07-23 00:33:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-07-23 00:33:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-07-23 00:33:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-23 00:33:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-23 00:33:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2022-07-23 00:33:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2022-07-23 00:33:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 00:33:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-23 00:33:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-23 00:33:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 00:33:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 00:33:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 00:33:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 00:33:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2022-07-23 00:33:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2022-07-23 00:33:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-23 00:33:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-23 00:33:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 00:33:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 00:33:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 00:33:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 00:33:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 00:33:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 00:33:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-23 00:33:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-23 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2022-07-23 00:33:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2022-07-23 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2022-07-23 00:33:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2022-07-23 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2022-07-23 00:33:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2022-07-23 00:33:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 00:33:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 00:33:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-07-23 00:33:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-07-23 00:33:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2022-07-23 00:33:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2022-07-23 00:33:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2022-07-23 00:33:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2022-07-23 00:33:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-07-23 00:33:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-07-23 00:33:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 00:33:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-23 00:33:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-23 00:33:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-23 00:33:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-23 00:33:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2022-07-23 00:33:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2022-07-23 00:33:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-23 00:33:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2022-07-23 00:33:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2022-07-23 00:33:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-07-23 00:33:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-07-23 00:33:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2022-07-23 00:33:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2022-07-23 00:33:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 00:33:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-07-23 00:33:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-07-23 00:33:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 00:33:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-07-23 00:33:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-07-23 00:33:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-07-23 00:33:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-07-23 00:33:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-23 00:33:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-23 00:33:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-23 00:33:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-23 00:33:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-23 00:33:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-23 00:33:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-23 00:33:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-23 00:33:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-23 00:33:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-23 00:33:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-23 00:33:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-23 00:33:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-07-23 00:33:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-07-23 00:33:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 00:33:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 00:33:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 00:33:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-23 00:33:16,048 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 00:33:16,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 00:33:16,320 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 00:33:37,030 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 00:33:37,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 00:33:37,049 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-07-23 00:33:37,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:33:37 BoogieIcfgContainer [2022-07-23 00:33:37,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 00:33:37,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 00:33:37,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 00:33:37,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 00:33:37,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 12:33:13" (1/3) ... [2022-07-23 00:33:37,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351bfef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:33:37, skipping insertion in model container [2022-07-23 00:33:37,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 12:33:15" (2/3) ... [2022-07-23 00:33:37,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351bfef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 12:33:37, skipping insertion in model container [2022-07-23 00:33:37,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 12:33:37" (3/3) ... [2022-07-23 00:33:37,059 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-23 00:33:37,071 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 00:33:37,071 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 00:33:37,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 00:33:37,168 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33911f11, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@119e6115 [2022-07-23 00:33:37,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 00:33:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2022-07-23 00:33:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 00:33:37,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:33:37,188 INFO L195 NwaCegarLoop]: 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] [2022-07-23 00:33:37,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:33:37,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:33:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2022-07-23 00:33:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:33:37,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161525137] [2022-07-23 00:33:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:33:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:33:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:37,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:33:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:33:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:33:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:33:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:33:37,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161525137] [2022-07-23 00:33:37,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161525137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:33:37,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:33:37,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 00:33:37,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957667976] [2022-07-23 00:33:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:33:37,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 00:33:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:33:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 00:33:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 00:33:37,972 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:33:41,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:43,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:47,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:49,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:51,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:56,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:33:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:33:56,958 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2022-07-23 00:33:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 00:33:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-23 00:33:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:33:57,020 INFO L225 Difference]: With dead ends: 3120 [2022-07-23 00:33:57,020 INFO L226 Difference]: Without dead ends: 1581 [2022-07-23 00:33:57,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 00:33:57,053 INFO L413 NwaCegarLoop]: 2292 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:33:57,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 3364 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 698 Invalid, 6 Unknown, 0 Unchecked, 18.7s Time] [2022-07-23 00:33:57,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-07-23 00:33:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2022-07-23 00:33:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2022-07-23 00:33:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2022-07-23 00:33:57,234 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2022-07-23 00:33:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:33:57,234 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2022-07-23 00:33:57,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:33:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2022-07-23 00:33:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 00:33:57,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:33:57,241 INFO L195 NwaCegarLoop]: 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] [2022-07-23 00:33:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 00:33:57,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:33:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:33:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2022-07-23 00:33:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:33:57,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152341938] [2022-07-23 00:33:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:33:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:33:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:33:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:33:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:33:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:33:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:33:57,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:33:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152341938] [2022-07-23 00:33:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152341938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:33:57,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:33:57,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 00:33:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167933116] [2022-07-23 00:33:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:33:57,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:33:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:33:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:33:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:33:57,634 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:33:58,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:02,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:04,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:09,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:11,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:14,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:24,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:34:26,584 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2022-07-23 00:34:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:34:26,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-23 00:34:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:34:26,599 INFO L225 Difference]: With dead ends: 4649 [2022-07-23 00:34:26,599 INFO L226 Difference]: Without dead ends: 3132 [2022-07-23 00:34:26,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:34:26,604 INFO L413 NwaCegarLoop]: 2658 mSDtfsCounter, 2422 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2853 SdHoareTripleChecker+Valid, 6285 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2022-07-23 00:34:26,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2853 Valid, 6285 Invalid, 3891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2947 Invalid, 6 Unknown, 0 Unchecked, 28.6s Time] [2022-07-23 00:34:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-07-23 00:34:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2022-07-23 00:34:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2022-07-23 00:34:26,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2022-07-23 00:34:26,706 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2022-07-23 00:34:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:34:26,707 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2022-07-23 00:34:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:34:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2022-07-23 00:34:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-23 00:34:26,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:34:26,711 INFO L195 NwaCegarLoop]: 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] [2022-07-23 00:34:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 00:34:26,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:34:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:34:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2022-07-23 00:34:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:34:26,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294847870] [2022-07-23 00:34:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:34:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:34:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:34:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:34:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:34:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:34:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:34:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:34:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:34:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:34:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:34:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294847870] [2022-07-23 00:34:26,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294847870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:34:26,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:34:26,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 00:34:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226695331] [2022-07-23 00:34:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:34:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:34:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:34:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:34:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:34:26,937 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 00:34:30,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:32,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:35,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:37,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:40,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:44,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:46,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:48,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:50,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:52,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:34:58,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:35:00,047 INFO L93 Difference]: Finished difference Result 9250 states and 14218 transitions. [2022-07-23 00:35:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:35:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-07-23 00:35:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:35:00,077 INFO L225 Difference]: With dead ends: 9250 [2022-07-23 00:35:00,078 INFO L226 Difference]: Without dead ends: 6241 [2022-07-23 00:35:00,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:35:00,092 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 2952 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 1823 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 3709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2022-07-23 00:35:00,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 5351 Invalid, 3709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 1875 Invalid, 11 Unknown, 0 Unchecked, 32.7s Time] [2022-07-23 00:35:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-07-23 00:35:00,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6000. [2022-07-23 00:35:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4249 states have (on average 1.3732642974817604) internal successors, (5835), 4430 states have internal predecessors, (5835), 1541 states have call successors, (1541), 210 states have call predecessors, (1541), 209 states have return successors, (1559), 1535 states have call predecessors, (1559), 1539 states have call successors, (1559) [2022-07-23 00:35:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8935 transitions. [2022-07-23 00:35:00,300 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8935 transitions. Word has length 33 [2022-07-23 00:35:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:35:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 8935 transitions. [2022-07-23 00:35:00,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 00:35:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8935 transitions. [2022-07-23 00:35:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-23 00:35:00,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:35:00,303 INFO L195 NwaCegarLoop]: 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] [2022-07-23 00:35:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 00:35:00,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:35:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:35:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1941480318, now seen corresponding path program 1 times [2022-07-23 00:35:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:35:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608916127] [2022-07-23 00:35:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:35:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:35:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:35:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:35:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:35:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 00:35:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:35:00,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608916127] [2022-07-23 00:35:00,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608916127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:35:00,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:35:00,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 00:35:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049359567] [2022-07-23 00:35:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:35:00,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:35:00,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:35:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:35:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:35:00,528 INFO L87 Difference]: Start difference. First operand 6000 states and 8935 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:35:02,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:06,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:08,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:11,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:13,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:17,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:23,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:35:24,719 INFO L93 Difference]: Finished difference Result 12448 states and 18923 transitions. [2022-07-23 00:35:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:35:24,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-23 00:35:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:35:24,742 INFO L225 Difference]: With dead ends: 12448 [2022-07-23 00:35:24,742 INFO L226 Difference]: Without dead ends: 6453 [2022-07-23 00:35:24,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:35:24,754 INFO L413 NwaCegarLoop]: 2291 mSDtfsCounter, 361 mSDsluCounter, 3571 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 434 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:35:24,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 5862 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2230 Invalid, 6 Unknown, 0 Unchecked, 23.9s Time] [2022-07-23 00:35:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-07-23 00:35:24,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6210. [2022-07-23 00:35:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4410 states have (on average 1.3696145124716552) internal successors, (6040), 4591 states have internal predecessors, (6040), 1583 states have call successors, (1583), 217 states have call predecessors, (1583), 216 states have return successors, (1601), 1577 states have call predecessors, (1601), 1581 states have call successors, (1601) [2022-07-23 00:35:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9224 transitions. [2022-07-23 00:35:24,927 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9224 transitions. Word has length 41 [2022-07-23 00:35:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:35:24,927 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9224 transitions. [2022-07-23 00:35:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-23 00:35:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9224 transitions. [2022-07-23 00:35:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-23 00:35:24,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:35:24,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:35:24,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 00:35:24,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:35:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:35:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -981262072, now seen corresponding path program 1 times [2022-07-23 00:35:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:35:24,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377137592] [2022-07-23 00:35:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:35:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:35:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:35:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:35:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:35:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 00:35:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:35:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:35:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 00:35:25,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:35:25,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377137592] [2022-07-23 00:35:25,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377137592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:35:25,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:35:25,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 00:35:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009698552] [2022-07-23 00:35:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:35:25,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 00:35:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:35:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 00:35:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 00:35:25,193 INFO L87 Difference]: Start difference. First operand 6210 states and 9224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 00:35:29,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:31,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:35,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:37,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:39,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:44,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 00:35:45,302 INFO L93 Difference]: Finished difference Result 13774 states and 20817 transitions. [2022-07-23 00:35:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 00:35:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2022-07-23 00:35:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 00:35:45,346 INFO L225 Difference]: With dead ends: 13774 [2022-07-23 00:35:45,346 INFO L226 Difference]: Without dead ends: 7583 [2022-07-23 00:35:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 00:35:45,362 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1101 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 1050 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-07-23 00:35:45,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 4936 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 1585 Invalid, 6 Unknown, 0 Unchecked, 19.9s Time] [2022-07-23 00:35:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-23 00:35:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7150. [2022-07-23 00:35:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 5140 states have (on average 1.3626459143968872) internal successors, (7004), 5337 states have internal predecessors, (7004), 1727 states have call successors, (1727), 283 states have call predecessors, (1727), 282 states have return successors, (1745), 1721 states have call predecessors, (1745), 1725 states have call successors, (1745) [2022-07-23 00:35:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 10476 transitions. [2022-07-23 00:35:45,666 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 10476 transitions. Word has length 69 [2022-07-23 00:35:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 00:35:45,667 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 10476 transitions. [2022-07-23 00:35:45,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 00:35:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 10476 transitions. [2022-07-23 00:35:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-23 00:35:45,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 00:35:45,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 00:35:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 00:35:45,670 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 00:35:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 00:35:45,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2030980828, now seen corresponding path program 1 times [2022-07-23 00:35:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 00:35:45,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309824014] [2022-07-23 00:35:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 00:35:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 00:35:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-23 00:35:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:35:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:35:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-23 00:35:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-23 00:35:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-23 00:35:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 00:35:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 00:35:46,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 00:35:46,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309824014] [2022-07-23 00:35:46,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309824014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 00:35:46,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 00:35:46,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-23 00:35:46,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472315194] [2022-07-23 00:35:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 00:35:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 00:35:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 00:35:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 00:35:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-23 00:35:46,366 INFO L87 Difference]: Start difference. First operand 7150 states and 10476 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-23 00:35:47,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:35:57,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:01,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:02,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:05,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:06,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:14,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:16,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:18,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:20,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:23,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:25,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:27,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:29,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:31,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:33,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:35,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:37,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:39,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:41,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:43,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:45,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:47,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:36:49,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:00,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:02,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:04,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:07,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:09,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:11,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:13,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:15,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:17,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:19,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:21,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:23,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:25,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:27,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:29,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:31,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:33,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:35,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:42,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 00:37:45,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []