./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.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 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 10:43:30,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:43:30,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:43:30,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:43:30,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:43:30,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:43:30,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:43:30,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:43:30,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:43:30,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:43:30,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:43:30,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:43:30,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:43:30,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:43:30,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:43:30,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:43:30,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:43:30,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:43:30,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:43:30,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:43:30,995 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:43:30,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:43:30,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:43:30,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:43:30,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:43:31,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:43:31,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:43:31,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:43:31,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:43:31,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:43:31,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:43:31,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:43:31,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:43:31,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:43:31,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:43:31,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:43:31,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:43:31,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:43:31,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:43:31,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:43:31,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:43:31,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:43:31,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:43:31,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:43:31,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:43:31,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:43:31,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:43:31,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:43:31,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:43:31,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:43:31,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:43:31,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:43:31,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:43:31,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:43:31,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:43:31,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:43:31,046 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:43:31,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:43:31,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:43:31,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-07-21 10:43:31,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:43:31,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:43:31,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:43:31,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:43:31,309 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:43:31,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-21 10:43:31,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d742ce3fc/bc706ccfd8db447091a81cc04a094a39/FLAG76583b105 [2022-07-21 10:43:32,002 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:43:32,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-21 10:43:32,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d742ce3fc/bc706ccfd8db447091a81cc04a094a39/FLAG76583b105 [2022-07-21 10:43:32,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d742ce3fc/bc706ccfd8db447091a81cc04a094a39 [2022-07-21 10:43:32,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:43:32,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:43:32,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:43:32,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:43:32,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:43:32,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:43:32" (1/1) ... [2022-07-21 10:43:32,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552446af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:32, skipping insertion in model container [2022-07-21 10:43:32,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:43:32" (1/1) ... [2022-07-21 10:43:32,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:43:32,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:43:33,815 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-21 10:43:33,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:43:33,922 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:43:34,167 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-21 10:43:34,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:43:34,242 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:43:34,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34 WrapperNode [2022-07-21 10:43:34,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:43:34,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:43:34,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:43:34,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:43:34,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:34,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,090 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4927 [2022-07-21 10:43:35,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:43:35,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:43:35,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:43:35,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:43:35,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:35,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:36,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:43:36,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:43:36,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:43:36,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:43:36,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (1/1) ... [2022-07-21 10:43:36,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:43:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:43:36,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 10:43:36,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 10:43:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-07-21 10:43:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-07-21 10:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-21 10:43:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-21 10:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-07-21 10:43:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-07-21 10:43:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-07-21 10:43:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-07-21 10:43:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-07-21 10:43:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-07-21 10:43:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 10:43:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 10:43:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-21 10:43:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-07-21 10:43:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-07-21 10:43:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 10:43:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:43:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-07-21 10:43:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-07-21 10:43:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-21 10:43:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-21 10:43:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-21 10:43:36,449 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-21 10:43:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:43:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:43:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-07-21 10:43:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-07-21 10:43:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-21 10:43:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-21 10:43:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 10:43:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 10:43:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:43:36,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:43:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-07-21 10:43:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-07-21 10:43:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-07-21 10:43:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-07-21 10:43:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-07-21 10:43:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-07-21 10:43:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-21 10:43:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-21 10:43:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-07-21 10:43:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-07-21 10:43:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-07-21 10:43:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-07-21 10:43:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 10:43:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 10:43:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-07-21 10:43:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-21 10:43:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-07-21 10:43:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-07-21 10:43:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:43:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-21 10:43:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-21 10:43:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-07-21 10:43:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-07-21 10:43:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:43:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:43:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-07-21 10:43:36,454 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-07-21 10:43:36,454 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-07-21 10:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-07-21 10:43:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-07-21 10:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-07-21 10:43:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-21 10:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-21 10:43:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-21 10:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-21 10:43:36,455 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 10:43:36,455 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 10:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 10:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 10:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-21 10:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-21 10:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-21 10:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-21 10:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 10:43:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-21 10:43:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-07-21 10:43:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-07-21 10:43:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-07-21 10:43:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:43:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-07-21 10:43:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-07-21 10:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-07-21 10:43:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-07-21 10:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 10:43:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 10:43:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:43:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:43:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-21 10:43:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-21 10:43:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:43:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-21 10:43:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-21 10:43:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-07-21 10:43:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-07-21 10:43:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-21 10:43:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-21 10:43:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-21 10:43:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-21 10:43:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:43:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:43:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-07-21 10:43:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-07-21 10:43:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:43:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:43:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:43:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 10:43:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-07-21 10:43:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-07-21 10:43:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-21 10:43:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-21 10:43:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-21 10:43:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-21 10:43:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-07-21 10:43:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-07-21 10:43:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-07-21 10:43:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-07-21 10:43:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-07-21 10:43:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-07-21 10:43:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-07-21 10:43:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-07-21 10:43:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-07-21 10:43:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-07-21 10:43:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-21 10:43:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-21 10:43:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 10:43:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 10:43:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-07-21 10:43:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-07-21 10:43:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-21 10:43:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-21 10:43:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-07-21 10:43:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-07-21 10:43:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:43:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:43:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:43:37,148 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:43:37,151 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:43:58,057 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:43:58,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:43:58,074 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 10:43:58,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:43:58 BoogieIcfgContainer [2022-07-21 10:43:58,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:43:58,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:43:58,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:43:58,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:43:58,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:43:32" (1/3) ... [2022-07-21 10:43:58,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caacc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:43:58, skipping insertion in model container [2022-07-21 10:43:58,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:43:34" (2/3) ... [2022-07-21 10:43:58,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3caacc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:43:58, skipping insertion in model container [2022-07-21 10:43:58,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:43:58" (3/3) ... [2022-07-21 10:43:58,092 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-21 10:43:58,101 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:43:58,102 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:43:58,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:43:58,167 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71117abb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@17909f77 [2022-07-21 10:43:58,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:43:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-21 10:43:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 10:43:58,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:58,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:43:58,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 959882994, now seen corresponding path program 1 times [2022-07-21 10:43:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:58,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192687464] [2022-07-21 10:43:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:43:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:58,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192687464] [2022-07-21 10:43:58,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192687464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:58,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:58,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:43:58,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316384289] [2022-07-21 10:43:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:43:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:43:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:58,621 INFO L87 Difference]: Start difference. First operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:58,835 INFO L93 Difference]: Finished difference Result 3865 states and 5697 transitions. [2022-07-21 10:43:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:43:58,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-21 10:43:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:58,873 INFO L225 Difference]: With dead ends: 3865 [2022-07-21 10:43:58,873 INFO L226 Difference]: Without dead ends: 2507 [2022-07-21 10:43:58,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:58,895 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1636 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:58,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 4122 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:43:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-07-21 10:43:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2489. [2022-07-21 10:43:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 1930 states have (on average 1.3854922279792745) internal successors, (2674), 1965 states have internal predecessors, (2674), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2022-07-21 10:43:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3525 transitions. [2022-07-21 10:43:59,039 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3525 transitions. Word has length 17 [2022-07-21 10:43:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:59,040 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3525 transitions. [2022-07-21 10:43:59,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3525 transitions. [2022-07-21 10:43:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 10:43:59,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:59,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:43:59,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:43:59,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1129769963, now seen corresponding path program 1 times [2022-07-21 10:43:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884297359] [2022-07-21 10:43:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:43:59,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:59,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884297359] [2022-07-21 10:43:59,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884297359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:59,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:59,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:43:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663638904] [2022-07-21 10:43:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:43:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:43:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,164 INFO L87 Difference]: Start difference. First operand 2489 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:59,248 INFO L93 Difference]: Finished difference Result 2658 states and 3749 transitions. [2022-07-21 10:43:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:43:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-21 10:43:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:59,261 INFO L225 Difference]: With dead ends: 2658 [2022-07-21 10:43:59,261 INFO L226 Difference]: Without dead ends: 2654 [2022-07-21 10:43:59,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,268 INFO L413 NwaCegarLoop]: 1915 mSDtfsCounter, 1290 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:59,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:43:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-07-21 10:43:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2652. [2022-07-21 10:43:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2078 states have (on average 1.388354186717998) internal successors, (2885), 2113 states have internal predecessors, (2885), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-21 10:43:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3742 transitions. [2022-07-21 10:43:59,400 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3742 transitions. Word has length 19 [2022-07-21 10:43:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:59,401 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3742 transitions. [2022-07-21 10:43:59,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3742 transitions. [2022-07-21 10:43:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 10:43:59,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:59,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:43:59,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:43:59,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash 662648824, now seen corresponding path program 1 times [2022-07-21 10:43:59,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:59,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559013176] [2022-07-21 10:43:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:43:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:59,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559013176] [2022-07-21 10:43:59,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559013176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:59,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:59,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:43:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129785193] [2022-07-21 10:43:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:43:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:43:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,507 INFO L87 Difference]: Start difference. First operand 2652 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:59,570 INFO L93 Difference]: Finished difference Result 2654 states and 3743 transitions. [2022-07-21 10:43:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:43:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-21 10:43:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:59,582 INFO L225 Difference]: With dead ends: 2654 [2022-07-21 10:43:59,582 INFO L226 Difference]: Without dead ends: 2651 [2022-07-21 10:43:59,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,589 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:59,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 1904 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:43:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-21 10:43:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-21 10:43:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2078 states have (on average 1.3878729547641964) internal successors, (2884), 2112 states have internal predecessors, (2884), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-21 10:43:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3740 transitions. [2022-07-21 10:43:59,655 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3740 transitions. Word has length 20 [2022-07-21 10:43:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:43:59,656 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3740 transitions. [2022-07-21 10:43:59,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3740 transitions. [2022-07-21 10:43:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 10:43:59,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:43:59,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:43:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:43:59,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:43:59,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:43:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash -933199730, now seen corresponding path program 1 times [2022-07-21 10:43:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:43:59,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941909119] [2022-07-21 10:43:59,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:43:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:43:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:43:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:43:59,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:43:59,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941909119] [2022-07-21 10:43:59,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941909119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:43:59,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:43:59,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:43:59,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359258192] [2022-07-21 10:43:59,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:43:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:43:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:43:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:43:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,776 INFO L87 Difference]: Start difference. First operand 2651 states and 3740 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:43:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:43:59,921 INFO L93 Difference]: Finished difference Result 7923 states and 11257 transitions. [2022-07-21 10:43:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:43:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-21 10:43:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:43:59,951 INFO L225 Difference]: With dead ends: 7923 [2022-07-21 10:43:59,952 INFO L226 Difference]: Without dead ends: 5275 [2022-07-21 10:43:59,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:43:59,967 INFO L413 NwaCegarLoop]: 2170 mSDtfsCounter, 1890 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:43:59,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 4058 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:43:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-07-21 10:44:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5263. [2022-07-21 10:44:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 4132 states have (on average 1.388189738625363) internal successors, (5736), 4199 states have internal predecessors, (5736), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-21 10:44:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7468 transitions. [2022-07-21 10:44:00,126 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7468 transitions. Word has length 21 [2022-07-21 10:44:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:00,127 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7468 transitions. [2022-07-21 10:44:00,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:44:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7468 transitions. [2022-07-21 10:44:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 10:44:00,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:00,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:44:00,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:44:00,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1135107515, now seen corresponding path program 1 times [2022-07-21 10:44:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:00,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244402061] [2022-07-21 10:44:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:00,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:44:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244402061] [2022-07-21 10:44:00,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244402061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:00,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:00,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:44:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100686615] [2022-07-21 10:44:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:44:00,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:44:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:44:00,210 INFO L87 Difference]: Start difference. First operand 5263 states and 7468 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:44:00,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:00,304 INFO L93 Difference]: Finished difference Result 5265 states and 7469 transitions. [2022-07-21 10:44:00,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:44:00,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-21 10:44:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:00,326 INFO L225 Difference]: With dead ends: 5265 [2022-07-21 10:44:00,326 INFO L226 Difference]: Without dead ends: 5262 [2022-07-21 10:44:00,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:44:00,331 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 1884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:00,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 1902 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:44:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2022-07-21 10:44:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5262. [2022-07-21 10:44:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 4132 states have (on average 1.387947725072604) internal successors, (5735), 4198 states have internal predecessors, (5735), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-21 10:44:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7466 transitions. [2022-07-21 10:44:00,475 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7466 transitions. Word has length 22 [2022-07-21 10:44:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:00,475 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 7466 transitions. [2022-07-21 10:44:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:44:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7466 transitions. [2022-07-21 10:44:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 10:44:00,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:00,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:44:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:44:00,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash 828127537, now seen corresponding path program 1 times [2022-07-21 10:44:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:00,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430342915] [2022-07-21 10:44:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:44:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:00,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430342915] [2022-07-21 10:44:00,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430342915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:00,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:00,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:44:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373820092] [2022-07-21 10:44:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:00,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:44:00,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:44:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:44:00,556 INFO L87 Difference]: Start difference. First operand 5262 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:44:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:00,649 INFO L93 Difference]: Finished difference Result 5264 states and 7467 transitions. [2022-07-21 10:44:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:44:00,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-21 10:44:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:00,670 INFO L225 Difference]: With dead ends: 5264 [2022-07-21 10:44:00,671 INFO L226 Difference]: Without dead ends: 5250 [2022-07-21 10:44:00,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:44:00,675 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 1881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:00,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1901 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:44:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2022-07-21 10:44:00,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5250. [2022-07-21 10:44:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4123 states have (on average 1.3875818578704826) internal successors, (5721), 4187 states have internal predecessors, (5721), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2022-07-21 10:44:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 7447 transitions. [2022-07-21 10:44:00,840 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 7447 transitions. Word has length 23 [2022-07-21 10:44:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 7447 transitions. [2022-07-21 10:44:00,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 10:44:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 7447 transitions. [2022-07-21 10:44:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-21 10:44:00,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:00,844 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 10:44:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:44:00,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:00,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1010052590, now seen corresponding path program 1 times [2022-07-21 10:44:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:00,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139902511] [2022-07-21 10:44:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:00,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 10:44:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 10:44:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:01,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 10:44:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:44:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:01,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139902511] [2022-07-21 10:44:01,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139902511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:01,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:01,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:44:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989650011] [2022-07-21 10:44:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:44:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:44:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:44:01,014 INFO L87 Difference]: Start difference. First operand 5250 states and 7447 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:44:04,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:09,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:12,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:15,734 INFO L93 Difference]: Finished difference Result 11328 states and 16256 transitions. [2022-07-21 10:44:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:44:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 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 48 [2022-07-21 10:44:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:15,762 INFO L225 Difference]: With dead ends: 11328 [2022-07-21 10:44:15,763 INFO L226 Difference]: Without dead ends: 6081 [2022-07-21 10:44:15,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 10:44:15,783 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 2760 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 977 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 977 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:15,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 4505 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [977 Valid, 1757 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2022-07-21 10:44:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2022-07-21 10:44:15,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 5260. [2022-07-21 10:44:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 4131 states have (on average 1.3863471314451707) internal successors, (5727), 4199 states have internal predecessors, (5727), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2022-07-21 10:44:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7453 transitions. [2022-07-21 10:44:15,953 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7453 transitions. Word has length 48 [2022-07-21 10:44:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:15,955 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7453 transitions. [2022-07-21 10:44:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:44:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7453 transitions. [2022-07-21 10:44:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 10:44:15,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:15,960 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 10:44:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:44:15,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -954410433, now seen corresponding path program 1 times [2022-07-21 10:44:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:15,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982234859] [2022-07-21 10:44:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:44:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 10:44:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 10:44:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:16,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 10:44:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:44:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:16,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982234859] [2022-07-21 10:44:16,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982234859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:16,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:16,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:44:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857191291] [2022-07-21 10:44:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:16,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:44:16,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:44:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:44:16,256 INFO L87 Difference]: Start difference. First operand 5260 states and 7453 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 10:44:19,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:23,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:25,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:29,043 INFO L93 Difference]: Finished difference Result 11876 states and 17228 transitions. [2022-07-21 10:44:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:44:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-07-21 10:44:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:29,070 INFO L225 Difference]: With dead ends: 11876 [2022-07-21 10:44:29,070 INFO L226 Difference]: Without dead ends: 6619 [2022-07-21 10:44:29,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-21 10:44:29,092 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 3369 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 1425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 5595 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1425 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:29,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 5595 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1425 Valid, 2527 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2022-07-21 10:44:29,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2022-07-21 10:44:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4942. [2022-07-21 10:44:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.3869643315370799) internal successors, (5405), 3965 states have internal predecessors, (5405), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-21 10:44:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6967 transitions. [2022-07-21 10:44:29,264 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6967 transitions. Word has length 61 [2022-07-21 10:44:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:29,265 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6967 transitions. [2022-07-21 10:44:29,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 10:44:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6967 transitions. [2022-07-21 10:44:29,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 10:44:29,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:29,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 10:44:29,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 10:44:29,270 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1650073521, now seen corresponding path program 1 times [2022-07-21 10:44:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:29,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933212938] [2022-07-21 10:44:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:44:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 10:44:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 10:44:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:29,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 10:44:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:44:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:29,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933212938] [2022-07-21 10:44:29,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933212938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:29,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:29,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:44:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552132718] [2022-07-21 10:44:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:44:29,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:44:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:44:29,453 INFO L87 Difference]: Start difference. First operand 4942 states and 6967 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 10:44:32,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:34,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:37,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:41,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:43,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:47,703 INFO L93 Difference]: Finished difference Result 11132 states and 16180 transitions. [2022-07-21 10:44:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:44:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-07-21 10:44:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:47,725 INFO L225 Difference]: With dead ends: 11132 [2022-07-21 10:44:47,726 INFO L226 Difference]: Without dead ends: 6193 [2022-07-21 10:44:47,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:44:47,748 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 1376 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 684 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:47,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 4390 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2186 Invalid, 5 Unknown, 0 Unchecked, 18.0s Time] [2022-07-21 10:44:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2022-07-21 10:44:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 4946. [2022-07-21 10:44:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3901 states have (on average 1.3865675467828762) internal successors, (5409), 3969 states have internal predecessors, (5409), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-21 10:44:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6971 transitions. [2022-07-21 10:44:47,901 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6971 transitions. Word has length 65 [2022-07-21 10:44:47,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:47,902 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 6971 transitions. [2022-07-21 10:44:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 10:44:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6971 transitions. [2022-07-21 10:44:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 10:44:47,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:47,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:44:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 10:44:47,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 767739636, now seen corresponding path program 1 times [2022-07-21 10:44:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:47,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763735405] [2022-07-21 10:44:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 10:44:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:44:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 10:44:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 10:44:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 10:44:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 10:44:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:44:48,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:48,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763735405] [2022-07-21 10:44:48,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763735405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:48,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:48,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:44:48,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143419947] [2022-07-21 10:44:48,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:48,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:44:48,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:44:48,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:44:48,043 INFO L87 Difference]: Start difference. First operand 4946 states and 6971 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 10:44:51,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:53,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:55,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:57,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:44:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:44:58,859 INFO L93 Difference]: Finished difference Result 11568 states and 16389 transitions. [2022-07-21 10:44:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:44:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-07-21 10:44:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:44:58,877 INFO L225 Difference]: With dead ends: 11568 [2022-07-21 10:44:58,878 INFO L226 Difference]: Without dead ends: 6625 [2022-07-21 10:44:58,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:44:58,892 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 2382 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 698 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:44:58,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 3408 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1537 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2022-07-21 10:44:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2022-07-21 10:44:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 6282. [2022-07-21 10:44:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 5009 states have (on average 1.3976841684967058) internal successors, (7001), 5093 states have internal predecessors, (7001), 902 states have call successors, (902), 356 states have call predecessors, (902), 370 states have return successors, (970), 904 states have call predecessors, (970), 896 states have call successors, (970) [2022-07-21 10:44:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8873 transitions. [2022-07-21 10:44:59,072 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8873 transitions. Word has length 76 [2022-07-21 10:44:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:44:59,072 INFO L495 AbstractCegarLoop]: Abstraction has 6282 states and 8873 transitions. [2022-07-21 10:44:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 10:44:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8873 transitions. [2022-07-21 10:44:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 10:44:59,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:44:59,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:44:59,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 10:44:59,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:44:59,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:44:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1364965650, now seen corresponding path program 1 times [2022-07-21 10:44:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:44:59,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537687146] [2022-07-21 10:44:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:44:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:44:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:44:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:44:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 10:44:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 10:44:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 10:44:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:44:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:44:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:44:59,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:44:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537687146] [2022-07-21 10:44:59,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537687146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:44:59,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:44:59,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:44:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91828672] [2022-07-21 10:44:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:44:59,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:44:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:44:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:44:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:44:59,222 INFO L87 Difference]: Start difference. First operand 6282 states and 8873 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 10:45:02,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:04,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:07,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:45:09,389 INFO L93 Difference]: Finished difference Result 18194 states and 25821 transitions. [2022-07-21 10:45:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:45:09,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2022-07-21 10:45:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:45:09,424 INFO L225 Difference]: With dead ends: 18194 [2022-07-21 10:45:09,424 INFO L226 Difference]: Without dead ends: 11915 [2022-07-21 10:45:09,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:45:09,442 INFO L413 NwaCegarLoop]: 2550 mSDtfsCounter, 3641 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 1420 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3821 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:45:09,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3821 Valid, 4784 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 1956 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2022-07-21 10:45:09,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2022-07-21 10:45:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 11280. [2022-07-21 10:45:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11280 states, 8931 states have (on average 1.3898779531967305) internal successors, (12413), 9079 states have internal predecessors, (12413), 1684 states have call successors, (1684), 634 states have call predecessors, (1684), 664 states have return successors, (1820), 1692 states have call predecessors, (1820), 1678 states have call successors, (1820) [2022-07-21 10:45:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11280 states to 11280 states and 15917 transitions. [2022-07-21 10:45:09,781 INFO L78 Accepts]: Start accepts. Automaton has 11280 states and 15917 transitions. Word has length 89 [2022-07-21 10:45:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:45:09,781 INFO L495 AbstractCegarLoop]: Abstraction has 11280 states and 15917 transitions. [2022-07-21 10:45:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 10:45:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 11280 states and 15917 transitions. [2022-07-21 10:45:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 10:45:09,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:45:09,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:45:09,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 10:45:09,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:45:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:45:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1931295713, now seen corresponding path program 1 times [2022-07-21 10:45:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:45:09,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025169147] [2022-07-21 10:45:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:45:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:45:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:45:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 10:45:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 10:45:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 10:45:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:45:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 10:45:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:45:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:45:09,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025169147] [2022-07-21 10:45:09,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025169147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:45:09,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:45:09,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:45:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574105965] [2022-07-21 10:45:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:45:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:45:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:45:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:45:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:45:09,986 INFO L87 Difference]: Start difference. First operand 11280 states and 15917 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:45:13,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:17,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:19,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:22,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:45:24,441 INFO L93 Difference]: Finished difference Result 14027 states and 20343 transitions. [2022-07-21 10:45:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 10:45:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-07-21 10:45:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:45:24,493 INFO L225 Difference]: With dead ends: 14027 [2022-07-21 10:45:24,494 INFO L226 Difference]: Without dead ends: 14024 [2022-07-21 10:45:24,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-21 10:45:24,506 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 2219 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 992 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 992 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:45:24,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 3463 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [992 Valid, 1784 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2022-07-21 10:45:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2022-07-21 10:45:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 11279. [2022-07-21 10:45:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11279 states, 8931 states have (on average 1.3887582577538908) internal successors, (12403), 9078 states have internal predecessors, (12403), 1683 states have call successors, (1683), 634 states have call predecessors, (1683), 664 states have return successors, (1820), 1692 states have call predecessors, (1820), 1678 states have call successors, (1820) [2022-07-21 10:45:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11279 states to 11279 states and 15906 transitions. [2022-07-21 10:45:24,912 INFO L78 Accepts]: Start accepts. Automaton has 11279 states and 15906 transitions. Word has length 87 [2022-07-21 10:45:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:45:24,913 INFO L495 AbstractCegarLoop]: Abstraction has 11279 states and 15906 transitions. [2022-07-21 10:45:24,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:45:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11279 states and 15906 transitions. [2022-07-21 10:45:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 10:45:24,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:45:24,921 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:45:24,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 10:45:24,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:45:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:45:24,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1592341211, now seen corresponding path program 1 times [2022-07-21 10:45:24,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:45:24,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56272521] [2022-07-21 10:45:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:45:24,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:45:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:45:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 10:45:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 10:45:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:45:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:45:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 10:45:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 10:45:25,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:45:25,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56272521] [2022-07-21 10:45:25,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56272521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:45:25,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:45:25,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:45:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648264069] [2022-07-21 10:45:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:45:25,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:45:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:45:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:45:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:45:25,199 INFO L87 Difference]: Start difference. First operand 11279 states and 15906 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:45:29,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:31,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:33,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:36,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:39,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:41,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:43,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:45,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:45:49,820 INFO L93 Difference]: Finished difference Result 24675 states and 35291 transitions. [2022-07-21 10:45:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 10:45:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2022-07-21 10:45:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:45:49,867 INFO L225 Difference]: With dead ends: 24675 [2022-07-21 10:45:49,867 INFO L226 Difference]: Without dead ends: 13399 [2022-07-21 10:45:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-21 10:45:49,896 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1975 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 654 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:45:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 4373 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 3127 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-07-21 10:45:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13399 states. [2022-07-21 10:45:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13399 to 11375. [2022-07-21 10:45:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11375 states, 9011 states have (on average 1.3879702585728555) internal successors, (12507), 9158 states have internal predecessors, (12507), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1844), 1708 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-21 10:45:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11375 states to 11375 states and 16050 transitions. [2022-07-21 10:45:50,277 INFO L78 Accepts]: Start accepts. Automaton has 11375 states and 16050 transitions. Word has length 120 [2022-07-21 10:45:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:45:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 11375 states and 16050 transitions. [2022-07-21 10:45:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:45:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 11375 states and 16050 transitions. [2022-07-21 10:45:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 10:45:50,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:45:50,289 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:45:50,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 10:45:50,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:45:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:45:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -651642087, now seen corresponding path program 1 times [2022-07-21 10:45:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:45:50,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691885103] [2022-07-21 10:45:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:45:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:45:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:45:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 10:45:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:45:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 10:45:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:45:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:45:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 10:45:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:45:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 10:45:50,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:45:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691885103] [2022-07-21 10:45:50,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691885103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:45:50,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:45:50,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:45:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932644747] [2022-07-21 10:45:50,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:45:50,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:45:50,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:45:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:45:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:45:50,499 INFO L87 Difference]: Start difference. First operand 11375 states and 16050 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 10:45:54,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:56,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:45:58,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:01,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:03,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:05,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:08,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:46:11,424 INFO L93 Difference]: Finished difference Result 24609 states and 35141 transitions. [2022-07-21 10:46:11,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:46:11,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 120 [2022-07-21 10:46:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:46:11,473 INFO L225 Difference]: With dead ends: 24609 [2022-07-21 10:46:11,473 INFO L226 Difference]: Without dead ends: 13237 [2022-07-21 10:46:11,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:46:11,505 INFO L413 NwaCegarLoop]: 1464 mSDtfsCounter, 1602 mSDsluCounter, 2286 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 368 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:46:11,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 3750 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 2183 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2022-07-21 10:46:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13237 states. [2022-07-21 10:46:11,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13237 to 11383. [2022-07-21 10:46:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11383 states, 9019 states have (on average 1.3876261226300033) internal successors, (12515), 9166 states have internal predecessors, (12515), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1844), 1708 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-21 10:46:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 16058 transitions. [2022-07-21 10:46:12,029 INFO L78 Accepts]: Start accepts. Automaton has 11383 states and 16058 transitions. Word has length 120 [2022-07-21 10:46:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:46:12,030 INFO L495 AbstractCegarLoop]: Abstraction has 11383 states and 16058 transitions. [2022-07-21 10:46:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 10:46:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 11383 states and 16058 transitions. [2022-07-21 10:46:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 10:46:12,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:46:12,039 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:46:12,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 10:46:12,040 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:46:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:46:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 968809516, now seen corresponding path program 1 times [2022-07-21 10:46:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:46:12,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219213298] [2022-07-21 10:46:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:46:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:46:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:46:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 10:46:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 10:46:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:46:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:46:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 10:46:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:46:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219213298] [2022-07-21 10:46:12,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219213298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:46:12,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:46:12,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:46:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872535005] [2022-07-21 10:46:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:46:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:46:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:46:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:46:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:46:12,254 INFO L87 Difference]: Start difference. First operand 11383 states and 16058 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 10:46:15,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:17,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:20,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:22,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:25,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:27,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:46:31,804 INFO L93 Difference]: Finished difference Result 24885 states and 35597 transitions. [2022-07-21 10:46:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:46:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 122 [2022-07-21 10:46:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:46:31,851 INFO L225 Difference]: With dead ends: 24885 [2022-07-21 10:46:31,851 INFO L226 Difference]: Without dead ends: 13505 [2022-07-21 10:46:31,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:46:31,884 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 1643 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 426 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:46:31,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 3888 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2319 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2022-07-21 10:46:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13505 states. [2022-07-21 10:46:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13505 to 11436. [2022-07-21 10:46:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 9072 states have (on average 1.3844797178130512) internal successors, (12560), 9219 states have internal predecessors, (12560), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1844), 1708 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-21 10:46:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 16103 transitions. [2022-07-21 10:46:32,400 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 16103 transitions. Word has length 122 [2022-07-21 10:46:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:46:32,400 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 16103 transitions. [2022-07-21 10:46:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 10:46:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 16103 transitions. [2022-07-21 10:46:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 10:46:32,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:46:32,409 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:46:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 10:46:32,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:46:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:46:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1198237660, now seen corresponding path program 1 times [2022-07-21 10:46:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:46:32,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014736170] [2022-07-21 10:46:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:46:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:46:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:46:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 10:46:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 10:46:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:46:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:46:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 10:46:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:46:32,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014736170] [2022-07-21 10:46:32,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014736170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:46:32,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:46:32,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 10:46:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576007108] [2022-07-21 10:46:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:46:32,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 10:46:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:46:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 10:46:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:46:32,619 INFO L87 Difference]: Start difference. First operand 11436 states and 16103 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 10:46:36,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:38,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:40,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:42,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:44,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:47,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:46:51,445 INFO L93 Difference]: Finished difference Result 24716 states and 35125 transitions. [2022-07-21 10:46:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:46:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2022-07-21 10:46:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:46:51,494 INFO L225 Difference]: With dead ends: 24716 [2022-07-21 10:46:51,494 INFO L226 Difference]: Without dead ends: 13271 [2022-07-21 10:46:51,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-21 10:46:51,522 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 1902 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 622 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:46:51,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 4277 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2515 Invalid, 4 Unknown, 0 Unchecked, 18.3s Time] [2022-07-21 10:46:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2022-07-21 10:46:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 11438. [2022-07-21 10:46:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11438 states, 9074 states have (on average 1.3837337447652633) internal successors, (12556), 9221 states have internal predecessors, (12556), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1844), 1708 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-21 10:46:51,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 16099 transitions. [2022-07-21 10:46:51,911 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 16099 transitions. Word has length 122 [2022-07-21 10:46:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:46:51,911 INFO L495 AbstractCegarLoop]: Abstraction has 11438 states and 16099 transitions. [2022-07-21 10:46:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 10:46:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 16099 transitions. [2022-07-21 10:46:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 10:46:51,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:46:51,921 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:46:51,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 10:46:51,922 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:46:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:46:51,922 INFO L85 PathProgramCache]: Analyzing trace with hash 513237223, now seen corresponding path program 1 times [2022-07-21 10:46:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:46:51,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264614809] [2022-07-21 10:46:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:46:51,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:46:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:46:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 10:46:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:46:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 10:46:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 10:46:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 10:46:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:46:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 10:46:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:46:52,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264614809] [2022-07-21 10:46:52,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264614809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:46:52,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:46:52,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:46:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255333200] [2022-07-21 10:46:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:46:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:46:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:46:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:46:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:46:52,159 INFO L87 Difference]: Start difference. First operand 11438 states and 16099 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 10:46:56,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:46:58,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:00,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:02,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:04,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:08,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:10,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:12,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:14,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:18,909 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:20,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:22,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:25,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:28,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:34,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:36,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:38,655 INFO L93 Difference]: Finished difference Result 30566 states and 43491 transitions. [2022-07-21 10:47:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 10:47:38,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 125 [2022-07-21 10:47:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:38,728 INFO L225 Difference]: With dead ends: 30566 [2022-07-21 10:47:38,728 INFO L226 Difference]: Without dead ends: 19131 [2022-07-21 10:47:38,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-21 10:47:38,763 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 3704 mSDsluCounter, 6488 mSDsCounter, 0 mSdLazyCounter, 5756 mSolverCounterSat, 1554 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3909 SdHoareTripleChecker+Valid, 9395 SdHoareTripleChecker+Invalid, 7323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 5756 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:47:38,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3909 Valid, 9395 Invalid, 7323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1554 Valid, 5756 Invalid, 13 Unknown, 0 Unchecked, 45.5s Time] [2022-07-21 10:47:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19131 states. [2022-07-21 10:47:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19131 to 11454. [2022-07-21 10:47:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11454 states, 9086 states have (on average 1.3832269425489765) internal successors, (12568), 9233 states have internal predecessors, (12568), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1852), 1712 states have call predecessors, (1852), 1694 states have call successors, (1852) [2022-07-21 10:47:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 16119 transitions. [2022-07-21 10:47:39,248 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 16119 transitions. Word has length 125 [2022-07-21 10:47:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:39,249 INFO L495 AbstractCegarLoop]: Abstraction has 11454 states and 16119 transitions. [2022-07-21 10:47:39,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 10:47:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 16119 transitions. [2022-07-21 10:47:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-21 10:47:39,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:39,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:47:39,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 10:47:39,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1487946240, now seen corresponding path program 1 times [2022-07-21 10:47:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:47:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54815847] [2022-07-21 10:47:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:47:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:47:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:47:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:47:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 10:47:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 10:47:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 10:47:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 10:47:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 10:47:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 10:47:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 10:47:39,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:47:39,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54815847] [2022-07-21 10:47:39,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54815847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:39,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:39,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:47:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381093753] [2022-07-21 10:47:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:47:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:47:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:47:39,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:47:39,632 INFO L87 Difference]: Start difference. First operand 11454 states and 16119 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 10:47:42,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:44,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:50,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:52,302 INFO L93 Difference]: Finished difference Result 25357 states and 36367 transitions. [2022-07-21 10:47:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:47:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 171 [2022-07-21 10:47:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:52,357 INFO L225 Difference]: With dead ends: 25357 [2022-07-21 10:47:52,357 INFO L226 Difference]: Without dead ends: 13906 [2022-07-21 10:47:52,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:47:52,388 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 2704 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 1016 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:47:52,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 3466 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1016 Valid, 1805 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2022-07-21 10:47:52,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2022-07-21 10:47:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 11470. [2022-07-21 10:47:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11470 states, 9102 states have (on average 1.3825532849923095) internal successors, (12584), 9249 states have internal predecessors, (12584), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1852), 1712 states have call predecessors, (1852), 1694 states have call successors, (1852) [2022-07-21 10:47:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11470 states to 11470 states and 16135 transitions. [2022-07-21 10:47:52,859 INFO L78 Accepts]: Start accepts. Automaton has 11470 states and 16135 transitions. Word has length 171 [2022-07-21 10:47:52,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:52,859 INFO L495 AbstractCegarLoop]: Abstraction has 11470 states and 16135 transitions. [2022-07-21 10:47:52,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 10:47:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11470 states and 16135 transitions. [2022-07-21 10:47:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-21 10:47:52,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:52,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:47:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 10:47:52,869 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:52,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1556925990, now seen corresponding path program 1 times [2022-07-21 10:47:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:47:52,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528916699] [2022-07-21 10:47:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:47:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:47:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:47:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 10:47:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 10:47:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 10:47:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 10:47:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:47:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 10:47:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 10:47:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 10:47:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 10:47:53,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:47:53,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528916699] [2022-07-21 10:47:53,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528916699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:53,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:53,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 10:47:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71486562] [2022-07-21 10:47:53,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 10:47:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:47:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 10:47:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:47:53,321 INFO L87 Difference]: Start difference. First operand 11470 states and 16135 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13)