./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.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 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:02:53,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:02:53,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:02:53,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:02:53,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:02:53,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:02:53,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:02:53,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:02:53,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:02:53,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:02:53,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:02:53,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:02:53,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:02:53,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:02:53,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:02:53,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:02:53,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:02:53,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:02:53,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:02:53,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:02:53,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:02:53,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:02:53,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:02:53,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:02:53,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:02:53,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:02:53,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:02:53,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:02:53,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:02:53,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:02:53,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:02:53,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:02:53,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:02:53,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:02:53,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:02:53,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:02:53,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:02:53,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:02:53,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:02:53,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:02:53,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:02:53,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:02:53,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:02:53,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:02:53,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:02:53,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:02:53,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:02:53,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:02:53,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:02:53,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:02:53,952 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:02:53,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:02:53,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:02:53,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:02:53,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:02:53,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:02:53,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:02:53,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:02:53,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:02:53,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:02:53,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:02:53,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:02:53,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:02:53,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:02:53,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:02:53,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:02:53,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:02:53,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:02:53,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:02:53,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:02:53,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:02:53,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:02:53,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:02:53,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cfca91e359676f221b9d3196f23901e359124e72b956d963114c00faf4f7248 [2021-12-16 04:02:54,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:02:54,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:02:54,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:02:54,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:02:54,225 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:02:54,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2021-12-16 04:02:54,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3238c176/3ef07b25ead247f2bbc6671c27cc0071/FLAGb421d238f [2021-12-16 04:02:54,964 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:02:54,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2021-12-16 04:02:55,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3238c176/3ef07b25ead247f2bbc6671c27cc0071/FLAGb421d238f [2021-12-16 04:02:55,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3238c176/3ef07b25ead247f2bbc6671c27cc0071 [2021-12-16 04:02:55,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:02:55,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:02:55,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:02:55,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:02:55,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:02:55,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:02:55" (1/1) ... [2021-12-16 04:02:55,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2489a9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:55, skipping insertion in model container [2021-12-16 04:02:55,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:02:55" (1/1) ... [2021-12-16 04:02:55,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:02:55,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:02:55,981 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2021-12-16 04:02:55,981 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2021-12-16 04:02:56,109 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2021-12-16 04:02:56,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:02:56,784 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:02:56,918 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2021-12-16 04:02:56,919 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2021-12-16 04:02:56,926 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2021-12-16 04:02:57,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:02:57,174 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:02:57,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57 WrapperNode [2021-12-16 04:02:57,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:02:57,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:02:57,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:02:57,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:02:57,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,340 INFO L137 Inliner]: procedures = 151, calls = 1509, calls flagged for inlining = 53, calls inlined = 38, statements flattened = 2211 [2021-12-16 04:02:57,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:02:57,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:02:57,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:02:57,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:02:57,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:02:57,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:02:57,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:02:57,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:02:57,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2021-12-16 04:02:57,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:02:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:02:57,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 04:02:57,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 04:02:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:02:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:02:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:02:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led [2021-12-16 04:02:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:02:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure start_int_fifo [2021-12-16 04:02:57,592 INFO L138 BoogieDeclarations]: Found implementation of procedure start_int_fifo [2021-12-16 04:02:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure symbolic [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure symbolic [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:02:57,593 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:02:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure start_isoc_chain [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure start_isoc_chain [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2021-12-16 04:02:57,594 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:02:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-16 04:02:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit [2021-12-16 04:02:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-16 04:02:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-16 04:02:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-16 04:02:57,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-16 04:02:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure queue_control_request [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_control_request [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure fill_isoc_urb [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_isoc_urb [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:02:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-16 04:02:57,596 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-16 04:02:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:02:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 04:02:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 04:02:57,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:02:57,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:02:57,977 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:02:57,979 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:02:58,222 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:03:00,777 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:03:00,792 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:03:00,793 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 04:03:00,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:03:00 BoogieIcfgContainer [2021-12-16 04:03:00,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:03:00,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:03:00,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:03:00,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:03:00,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:02:55" (1/3) ... [2021-12-16 04:03:00,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0492e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:03:00, skipping insertion in model container [2021-12-16 04:03:00,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (2/3) ... [2021-12-16 04:03:00,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0492e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:03:00, skipping insertion in model container [2021-12-16 04:03:00,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:03:00" (3/3) ... [2021-12-16 04:03:00,806 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2021-12-16 04:03:00,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:03:00,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:03:00,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:03:00,867 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 04:03:00,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:03:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 389 states have (on average 1.3496143958868894) internal successors, (525), 397 states have internal predecessors, (525), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2021-12-16 04:03:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-16 04:03:00,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:00,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:00,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash 453274785, now seen corresponding path program 1 times [2021-12-16 04:03:00,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:00,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397285687] [2021-12-16 04:03:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:00,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 04:03:01,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397285687] [2021-12-16 04:03:01,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397285687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:01,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:01,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:03:01,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434426315] [2021-12-16 04:03:01,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:01,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:03:01,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:03:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:03:01,441 INFO L87 Difference]: Start difference. First operand has 524 states, 389 states have (on average 1.3496143958868894) internal successors, (525), 397 states have internal predecessors, (525), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 04:03:05,124 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 [] [2021-12-16 04:03:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:06,349 INFO L93 Difference]: Finished difference Result 1128 states and 1611 transitions. [2021-12-16 04:03:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:03:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-16 04:03:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:06,364 INFO L225 Difference]: With dead ends: 1128 [2021-12-16 04:03:06,364 INFO L226 Difference]: Without dead ends: 586 [2021-12-16 04:03:06,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:03:06,372 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 178 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 119 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:06,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1561 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 431 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-12-16 04:03:06,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-12-16 04:03:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 547. [2021-12-16 04:03:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 411 states have (on average 1.340632603406326) internal successors, (551), 414 states have internal predecessors, (551), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-16 04:03:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 760 transitions. [2021-12-16 04:03:06,461 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 760 transitions. Word has length 28 [2021-12-16 04:03:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:06,462 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 760 transitions. [2021-12-16 04:03:06,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 04:03:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 760 transitions. [2021-12-16 04:03:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 04:03:06,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:06,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:06,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:03:06,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash -914067174, now seen corresponding path program 1 times [2021-12-16 04:03:06,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:06,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785288736] [2021-12-16 04:03:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:06,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:06,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:06,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 04:03:06,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785288736] [2021-12-16 04:03:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785288736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:06,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:06,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:03:06,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422768400] [2021-12-16 04:03:06,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:06,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:03:06,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:06,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:03:06,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:03:06,633 INFO L87 Difference]: Start difference. First operand 547 states and 760 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:09,964 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 [] [2021-12-16 04:03:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:11,711 INFO L93 Difference]: Finished difference Result 1119 states and 1564 transitions. [2021-12-16 04:03:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:03:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-16 04:03:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:11,716 INFO L225 Difference]: With dead ends: 1119 [2021-12-16 04:03:11,716 INFO L226 Difference]: Without dead ends: 585 [2021-12-16 04:03:11,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:03:11,719 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 114 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:11,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 2140 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-12-16 04:03:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-12-16 04:03:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 547. [2021-12-16 04:03:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 411 states have (on average 1.338199513381995) internal successors, (550), 414 states have internal predecessors, (550), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-16 04:03:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 759 transitions. [2021-12-16 04:03:11,759 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 759 transitions. Word has length 48 [2021-12-16 04:03:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:11,759 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 759 transitions. [2021-12-16 04:03:11,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 759 transitions. [2021-12-16 04:03:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 04:03:11,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:11,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:11,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:03:11,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1575461788, now seen corresponding path program 1 times [2021-12-16 04:03:11,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:11,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681615395] [2021-12-16 04:03:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:11,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-16 04:03:11,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681615395] [2021-12-16 04:03:11,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681615395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:11,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:11,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:03:11,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178121312] [2021-12-16 04:03:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:11,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:03:11,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:03:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:03:11,929 INFO L87 Difference]: Start difference. First operand 547 states and 759 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:15,263 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 [] [2021-12-16 04:03:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:16,412 INFO L93 Difference]: Finished difference Result 1245 states and 1753 transitions. [2021-12-16 04:03:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:03:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2021-12-16 04:03:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:16,417 INFO L225 Difference]: With dead ends: 1245 [2021-12-16 04:03:16,417 INFO L226 Difference]: Without dead ends: 714 [2021-12-16 04:03:16,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:03:16,420 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 224 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:16,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 1775 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-16 04:03:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-16 04:03:16,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 554. [2021-12-16 04:03:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 418 states have (on average 1.3397129186602872) internal successors, (560), 421 states have internal predecessors, (560), 105 states have call successors, (105), 31 states have call predecessors, (105), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-16 04:03:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 769 transitions. [2021-12-16 04:03:16,446 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 769 transitions. Word has length 48 [2021-12-16 04:03:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:16,447 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 769 transitions. [2021-12-16 04:03:16,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 769 transitions. [2021-12-16 04:03:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-16 04:03:16,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:16,449 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 04:03:16,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:03:16,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash -809569934, now seen corresponding path program 1 times [2021-12-16 04:03:16,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:16,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497591576] [2021-12-16 04:03:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:16,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 04:03:16,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497591576] [2021-12-16 04:03:16,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497591576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:16,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:16,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 04:03:16,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417168559] [2021-12-16 04:03:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:16,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 04:03:16,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 04:03:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:03:16,644 INFO L87 Difference]: Start difference. First operand 554 states and 769 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:20,048 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 [] [2021-12-16 04:03:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:21,535 INFO L93 Difference]: Finished difference Result 1292 states and 1826 transitions. [2021-12-16 04:03:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:03:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2021-12-16 04:03:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:21,540 INFO L225 Difference]: With dead ends: 1292 [2021-12-16 04:03:21,540 INFO L226 Difference]: Without dead ends: 754 [2021-12-16 04:03:21,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 04:03:21,544 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 271 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:21,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 1779 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-16 04:03:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-12-16 04:03:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 594. [2021-12-16 04:03:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 456 states have (on average 1.3530701754385965) internal successors, (617), 459 states have internal predecessors, (617), 107 states have call successors, (107), 31 states have call predecessors, (107), 30 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2021-12-16 04:03:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 830 transitions. [2021-12-16 04:03:21,570 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 830 transitions. Word has length 54 [2021-12-16 04:03:21,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:21,571 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 830 transitions. [2021-12-16 04:03:21,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 04:03:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 830 transitions. [2021-12-16 04:03:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 04:03:21,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:21,574 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:21,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:03:21,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -819742023, now seen corresponding path program 1 times [2021-12-16 04:03:21,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:21,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607277636] [2021-12-16 04:03:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:21,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 04:03:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 04:03:21,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:21,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607277636] [2021-12-16 04:03:21,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607277636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:21,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:21,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:03:21,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231969141] [2021-12-16 04:03:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:21,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:03:21,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:03:21,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:03:21,842 INFO L87 Difference]: Start difference. First operand 594 states and 830 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 04:03:25,320 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 [] [2021-12-16 04:03:27,363 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 [] [2021-12-16 04:03:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:29,475 INFO L93 Difference]: Finished difference Result 1350 states and 1885 transitions. [2021-12-16 04:03:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:03:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2021-12-16 04:03:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:29,480 INFO L225 Difference]: With dead ends: 1350 [2021-12-16 04:03:29,480 INFO L226 Difference]: Without dead ends: 772 [2021-12-16 04:03:29,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:03:29,484 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 780 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 273 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:29,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1620 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 764 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-12-16 04:03:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-12-16 04:03:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 719. [2021-12-16 04:03:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 550 states have (on average 1.3509090909090908) internal successors, (743), 554 states have internal predecessors, (743), 127 states have call successors, (127), 42 states have call predecessors, (127), 41 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2021-12-16 04:03:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 996 transitions. [2021-12-16 04:03:29,540 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 996 transitions. Word has length 68 [2021-12-16 04:03:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:29,540 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 996 transitions. [2021-12-16 04:03:29,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 04:03:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 996 transitions. [2021-12-16 04:03:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-16 04:03:29,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:29,542 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:29,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:03:29,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -504486881, now seen corresponding path program 1 times [2021-12-16 04:03:29,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619678940] [2021-12-16 04:03:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:29,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 04:03:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 04:03:29,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:29,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619678940] [2021-12-16 04:03:29,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619678940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:29,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:29,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:03:29,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684500257] [2021-12-16 04:03:29,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:29,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:03:29,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:03:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:03:29,727 INFO L87 Difference]: Start difference. First operand 719 states and 996 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 04:03:33,809 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 [] [2021-12-16 04:03:35,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:03:39,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:03:41,662 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 [] [2021-12-16 04:03:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:41,753 INFO L93 Difference]: Finished difference Result 1816 states and 2582 transitions. [2021-12-16 04:03:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 04:03:41,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-12-16 04:03:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:41,760 INFO L225 Difference]: With dead ends: 1816 [2021-12-16 04:03:41,760 INFO L226 Difference]: Without dead ends: 1113 [2021-12-16 04:03:41,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:03:41,767 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 499 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 345 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:41,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1967 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 860 Invalid, 4 Unknown, 0 Unchecked, 11.9s Time] [2021-12-16 04:03:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-12-16 04:03:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 721. [2021-12-16 04:03:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 556 states have internal predecessors, (745), 127 states have call successors, (127), 42 states have call predecessors, (127), 41 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2021-12-16 04:03:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 998 transitions. [2021-12-16 04:03:41,806 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 998 transitions. Word has length 77 [2021-12-16 04:03:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:41,808 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 998 transitions. [2021-12-16 04:03:41,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 04:03:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 998 transitions. [2021-12-16 04:03:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 04:03:41,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:41,810 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:41,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 04:03:41,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1854822344, now seen corresponding path program 1 times [2021-12-16 04:03:41,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:41,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909138713] [2021-12-16 04:03:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:41,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 04:03:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-16 04:03:42,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:42,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909138713] [2021-12-16 04:03:42,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909138713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:42,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:42,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:03:42,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169032353] [2021-12-16 04:03:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:42,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:03:42,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:03:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:03:42,038 INFO L87 Difference]: Start difference. First operand 721 states and 998 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 04:03:46,669 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 [] [2021-12-16 04:03:48,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:03:51,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:03:53,429 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 [] [2021-12-16 04:03:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:03:57,560 INFO L93 Difference]: Finished difference Result 2001 states and 2790 transitions. [2021-12-16 04:03:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 04:03:57,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 82 [2021-12-16 04:03:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:03:57,568 INFO L225 Difference]: With dead ends: 2001 [2021-12-16 04:03:57,568 INFO L226 Difference]: Without dead ends: 1296 [2021-12-16 04:03:57,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-16 04:03:57,571 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 829 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 287 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-12-16 04:03:57,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 3787 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1429 Invalid, 4 Unknown, 0 Unchecked, 15.4s Time] [2021-12-16 04:03:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-12-16 04:03:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 723. [2021-12-16 04:03:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.348375451263538) internal successors, (747), 558 states have internal predecessors, (747), 127 states have call successors, (127), 42 states have call predecessors, (127), 41 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2021-12-16 04:03:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1000 transitions. [2021-12-16 04:03:57,606 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1000 transitions. Word has length 82 [2021-12-16 04:03:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:03:57,607 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1000 transitions. [2021-12-16 04:03:57,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 04:03:57,607 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1000 transitions. [2021-12-16 04:03:57,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 04:03:57,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:03:57,608 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:03:57,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 04:03:57,609 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:03:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:03:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 344842123, now seen corresponding path program 1 times [2021-12-16 04:03:57,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:03:57,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175085681] [2021-12-16 04:03:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:03:57,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:03:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:03:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 04:03:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 04:03:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:03:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 04:03:57,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:03:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175085681] [2021-12-16 04:03:57,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175085681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:03:57,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:03:57,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:03:57,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944649176] [2021-12-16 04:03:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:03:57,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:03:57,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:03:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:03:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:03:57,771 INFO L87 Difference]: Start difference. First operand 723 states and 1000 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)